Load testing, JMeter and k6 guides, website speed and API monitoring how-tos, and testing tool comparisons from the team that builds LoadFocus.https://loadfocus.com/blog/https://loadfocus.com/blog/jmeter-jsr223-groovy/https://loadfocus.com/blog/jmeter-jsr223-groovy/JMeter JSR223 and Groovy, tested: cached Groovy ran 55x faster than uncached, a cached ${n} kept its first value, and a failing PostProcessor still passed.Mon, 09 Nov 2026 00:00:00 GMThttps://loadfocus.com/blog/websocket-load-testing/https://loadfocus.com/blog/websocket-load-testing/WebSocket load testing with k6 and JMeter, tested: 2,000 open sockets, refused handshakes that still exit 0, and a timeout that shifts every later JMeter reply.Mon, 09 Nov 2026 00:00:00 GMThttps://loadfocus.com/blog/k6-checks/https://loadfocus.com/blog/k6-checks/k6 checks explained with real runs: 66% failed checks still exited 0, one check name can carry its own threshold, and a check that throws ends the iteration.Sat, 07 Nov 2026 00:00:00 GMThttps://loadfocus.com/blog/k6-stress-test/https://loadfocus.com/blog/k6-stress-test/How to write a k6 stress test, with real runs: a ramping-vus test passed at 4x load with 0% errors, while an arrival-rate test at 2x capacity failed 50%.Sat, 07 Nov 2026 00:00:00 GMThttps://loadfocus.com/blog/selenium-load-testing/https://loadfocus.com/blog/selenium-load-testing/Selenium load testing, measured: 20 headless Chrome users took 12.1 GiB and ran slower than 5, while k6 simulated 1,000 users in 296 MiB. When browsers belong.Sat, 07 Nov 2026 00:00:00 GMThttps://loadfocus.com/blog/load-balancer-testing/https://loadfocus.com/blog/load-balancer-testing/Load balancer testing with real runs: one hung backend stopped all traffic for 30 s while k6 reported 0% errors. Six checks and how to run each one.Sat, 07 Nov 2026 00:00:00 GMThttps://loadfocus.com/blog/k6-reports/https://loadfocus.com/blog/k6-reports/k6 report formats tested on v2.3.0: the end-of-test summary, JSON and CSV output, handleSummary, and the HTML dashboard export k6 skipped on a 19-second run.Fri, 06 Nov 2026 00:00:00 GMThttps://loadfocus.com/blog/k6-typescript/https://loadfocus.com/blog/k6-typescript/k6 runs .ts files directly since v0.57, but it strips types without checking them. 11 TypeScript cases tested on k6 v2.3.0, and the decorators that hung it.Fri, 06 Nov 2026 00:00:00 GMThttps://loadfocus.com/blog/jmeter-timers/https://loadfocus.com/blog/jmeter-timers/JMeter timers tested: the Constant Throughput Timer counts samples, not iterations, and Poisson Random Timer pauses had a standard deviation of just 13 ms.Wed, 04 Nov 2026 00:00:00 GMThttps://loadfocus.com/blog/jmeter-vs-locust/https://loadfocus.com/blog/jmeter-vs-locust/JMeter vs Locust, tested: at 2,000 users Locust ran 12 threads to JMeter's 2,039, but one Locust process tops out at one CPU core. Scripts, reports and CI.Wed, 04 Nov 2026 00:00:00 GMThttps://loadfocus.com/blog/jmeter-logic-controllers/https://loadfocus.com/blog/jmeter-logic-controllers/JMeter logic controllers tested in one plan: If, Throughput, Loop, While and Transaction, with sample counts and an If condition 22x slower in JavaScript.Mon, 02 Nov 2026 00:00:00 GMThttps://loadfocus.com/blog/k6-scenarios/https://loadfocus.com/blog/k6-scenarios/k6 scenarios explained with real runs: all 6 executors, startTime chaining, per-scenario thresholds, and a rate test that dropped 686 of 1,001 iterations.Mon, 02 Nov 2026 00:00:00 GMThttps://loadfocus.com/blog/hey-load-testing/https://loadfocus.com/blog/hey-load-testing/hey load testing tutorial: install hey, read its report, send POSTs with tokens, and avoid the exit code 0 that hides failed runs. Tested on hey 0.1.5.Sun, 01 Nov 2026 00:00:00 GMThttps://loadfocus.com/blog/jmeter-html-report/https://loadfocus.com/blog/jmeter-html-report/Generate the JMeter HTML report, read each table and graph, and fix the default that hid 10,000 slow samples from p99. Tested on JMeter 5.6.2 with real results.Sun, 01 Nov 2026 00:00:00 GMThttps://loadfocus.com/blog/jmeter-thread-groups/https://loadfocus.com/blog/jmeter-thread-groups/JMeter thread groups explained: standard, setUp, tearDown and Open Model groups, the five error actions, and an open model run with 1,732 threads at once.Sun, 01 Nov 2026 00:00:00 GMThttps://loadfocus.com/blog/jmeter-vs-gatling/https://loadfocus.com/blog/jmeter-vs-gatling/JMeter vs Gatling, tested: the same 2,000-user run took 2,037 threads in JMeter and 65 in Gatling. Scripting, protocols, reports, CI exit codes and scaling.Sun, 01 Nov 2026 00:00:00 GMThttps://loadfocus.com/blog/performance-testing-interview-questions/https://loadfocus.com/blog/performance-testing-interview-questions/Performance testing interview questions with answers: test types, metrics, Little's Law, workload models, bottlenecks, and 4 scenarios, with real test numbers.Sat, 31 Oct 2026 00:00:00 GMThttps://loadfocus.com/blog/wrk-load-testing/https://loadfocus.com/blog/wrk-load-testing/wrk load testing tutorial: install wrk, read its output, send POSTs with Lua, and avoid the 2-second timeout that hides slow responses. Tested on wrk 4.2.0.Sat, 31 Oct 2026 00:00:00 GMThttps://loadfocus.com/blog/apache-bench/https://loadfocus.com/blog/apache-bench/Apache Bench tutorial: install ab, run a test, read every output line, send POSTs and headers, and avoid the -t 50,000 cap. Tested on ab 2.3 with real output.Thu, 29 Oct 2026 00:00:00 GMThttps://loadfocus.com/blog/vegeta-load-testing/https://loadfocus.com/blog/vegeta-load-testing/Vegeta load testing step by step: install, attack at a fixed rate, write targets files, read reports, ramp up and gate CI. Tested on 12.13.0 with real output.Thu, 29 Oct 2026 00:00:00 GMThttps://loadfocus.com/blog/artillery-load-testing/https://loadfocus.com/blog/artillery-load-testing/Artillery load testing step by step: install, write a YAML script, set arrival phases, read results, fail CI on a threshold. Tested on 2.0.34, 1,120 requests.Tue, 27 Oct 2026 00:00:00 GMThttps://loadfocus.com/blog/gatling-load-testing/https://loadfocus.com/blog/gatling-load-testing/Gatling load testing step by step: set up Maven, write a Java simulation, inject users, read the report, fail the build on assertions. Tested on 3.16.0.Tue, 27 Oct 2026 00:00:00 GMThttps://loadfocus.com/blog/jmeter-correlation/https://loadfocus.com/blog/jmeter-correlation/Correlation in JMeter, step by step: find dynamic values, pick the right extractor, reuse tokens and IDs. Tested on JMeter 5.6.3 with and without extractors.Sun, 25 Oct 2026 00:00:00 GMThttps://loadfocus.com/blog/jmeter-interview-questions/https://loadfocus.com/blog/jmeter-interview-questions/JMeter interview questions with answers checked against the JMeter 5.6.3 manual: thread groups, timers, correlation, CLI mode, distributed runs and 4 scenarios.Sun, 25 Oct 2026 00:00:00 GMThttps://loadfocus.com/blog/jmeter-vs-loadrunner/https://loadfocus.com/blog/jmeter-vs-loadrunner/JMeter vs LoadRunner compared on licence cost, 180+ protocols vs 10 protocol families, scripting, scaling and OS support, with OpenText's 2026 names and limits.Sun, 25 Oct 2026 00:00:00 GMThttps://loadfocus.com/blog/locust-load-testing/https://loadfocus.com/blog/locust-load-testing/Locust load testing step by step: install, write a locustfile, run headless, read the stats and shape the load. Tested on Locust 2.47.0 with 1,026 requests.Sun, 25 Oct 2026 00:00:00 GMThttps://loadfocus.com/blog/2026/10/load-testing-event-driven-architectureshttps://loadfocus.com/blog/2026/10/load-testing-event-driven-architecturesLoad test event-driven systems by injecting events at the producer and measuring at the consumer: end-to-end latency, consumer lag, DLQ rate, duplicates.Thu, 22 Oct 2026 09:32:52 GMThttps://loadfocus.com/blog/2026/10/synthetic-traffic-performance-testinghttps://loadfocus.com/blog/2026/10/synthetic-traffic-performance-testingSynthetic traffic is software-generated requests: load tests, monitors, canaries. See the uses and the risks to analytics, WAF rules and third parties.Wed, 21 Oct 2026 05:57:28 GMThttps://loadfocus.com/blog/2026/10/optimize-database-connection-poolshttps://loadfocus.com/blog/2026/10/optimize-database-connection-poolsSize a database connection pool from the database's limits, then confirm it with a load test. Defaults and limits from HikariCP, PgBouncer and PostgreSQL docs.Sun, 18 Oct 2026 05:04:12 GMThttps://loadfocus.com/blog/2026/10/http3-load-testing-impacthttps://loadfocus.com/blog/2026/10/http3-load-testing-impactHTTP/3 load testing: stock k6, JMeter, Gatling and Locust do not document HTTP/3 support. Learn what your test measures, how to check, and what to do.Sat, 17 Oct 2026 07:35:06 GMThttps://loadfocus.com/blog/2026/10/ai-load-test-script-maintenancehttps://loadfocus.com/blog/2026/10/ai-load-test-script-maintenanceLoad test scripts break when APIs, auth, dynamic values or data change. How to detect drift early, keep scripts in git, and what AI can and cannot do.Fri, 16 Oct 2026 06:15:37 GMThttps://loadfocus.com/blog/2026/10/multi-region-deployment-load-testinghttps://loadfocus.com/blog/2026/10/multi-region-deployment-load-testingHow to load test a multi-region deployment: generate load from each user region, measure replication lag and failover, and check DNS routing and capacity.Wed, 14 Oct 2026 05:36:05 GMThttps://loadfocus.com/blog/2026/10/set-performance-budgets-web-appshttps://loadfocus.com/blog/2026/10/set-performance-budgets-web-appsLearn how to set performance budgets for web apps to optimize user experience and improve loading times in 2026. Boost your site's efficiency today.Tue, 13 Oct 2026 08:47:01 GMThttps://loadfocus.com/blog/2026/10/saas-onboarding-testing-guidehttps://loadfocus.com/blog/2026/10/saas-onboarding-testing-guideLearn effective SaaS onboarding testing techniques to create load testing scenarios that enhance user experience and ensure smooth performance.Sun, 11 Oct 2026 06:27:28 GMThttps://loadfocus.com/blog/2026/10/cache-invalidation-performance-testinghttps://loadfocus.com/blog/2026/10/cache-invalidation-performance-testingCache invalidation decides whether a load test measures your cache or your origin. How cold, warm and purged caches change results and how to test a purge.Sat, 10 Oct 2026 07:11:13 GMThttps://loadfocus.com/blog/2026/10/api-rate-limiting-causeshttps://loadfocus.com/blog/2026/10/api-rate-limiting-causesThe 10 most common causes of API rate limiting and 429 errors in load tests, with the headers to read, how to back off and how to pace a test.Wed, 07 Oct 2026 08:25:00 GMThttps://loadfocus.com/blog/2026/10/oauth2-load-testinghttps://loadfocus.com/blog/2026/10/oauth2-load-testingLearn how to configure OAuth2 load testing for APIs to ensure secure and accurate performance under stress. Improve your API testing process today.Tue, 06 Oct 2026 08:23:42 GMThttps://loadfocus.com/blog/2026/10/network-jitter-cloud-load-testinghttps://loadfocus.com/blog/2026/10/network-jitter-cloud-load-testingRun a jitter test with ping, iperf or mtr, see what jitter value is acceptable, and learn what a cloud load test can and cannot show about network jitter.Fri, 02 Oct 2026 09:03:57 GMThttps://loadfocus.com/blog/2026/10/iot-load-testing-challengeshttps://loadfocus.com/blog/2026/10/iot-load-testing-challengesIoT load testing for MQTT and CoAP backends: connections, keepalive, reconnect storms and retained messages, plus the tools that can generate that load.Thu, 01 Oct 2026 09:21:27 GMThttps://loadfocus.com/blog/2026/09/edge-locations-cloud-loadhttps://loadfocus.com/blog/2026/09/edge-locations-cloud-loadEdge locations serve your users; load generators run in cloud regions. How to pick generator locations, split users per region and know the limits.Mon, 28 Sep 2026 07:00:17 GMThttps://loadfocus.com/blog/2026/09/infrastructure-auto-scaling-validationhttps://loadfocus.com/blog/2026/09/infrastructure-auto-scaling-validationValidate infrastructure auto-scaling with load testing: ramp shapes that expose scaling lag, time-to-scale, the error window and scale-in under load.Sun, 27 Sep 2026 05:05:30 GMThttps://loadfocus.com/blog/2026/09/cloud-vs-on-premise-load-testinghttps://loadfocus.com/blog/2026/09/cloud-vs-on-premise-load-testingCloud or on-premise load testing? Answer five questions in order, then confirm with a two-run pilot. Links the startup, enterprise and monitoring guides.Fri, 25 Sep 2026 09:48:16 GMThttps://loadfocus.com/blog/2026/09/opinion-performance-testing-security-standard-2026https://loadfocus.com/blog/2026/09/opinion-performance-testing-security-standard-2026Load tests can check that security controls hold under load: rate limits, login throttling and resource caps, backed by OWASP and NIST sources.Mon, 21 Sep 2026 06:14:47 GMThttps://loadfocus.com/blog/2026/09/case-study-improving-api-throughput-financial-platformhttps://loadfocus.com/blog/2026/09/case-study-improving-api-throughput-financial-platformRaise API throughput by finding what caps it: Little's Law, connection pools, queueing and rate limits, with worked arithmetic and how to read a load test.Sun, 20 Sep 2026 05:56:02 GMThttps://loadfocus.com/blog/2026/09/guide-load-testing-multi-tenant-saas-applications-2026https://loadfocus.com/blog/2026/09/guide-load-testing-multi-tenant-saas-applications-2026Load testing multi-tenant SaaS: model the tenant mix, test noisy neighbours and per-tenant rate limits, check data isolation, and read results per tenant.Sat, 19 Sep 2026 08:21:24 GMThttps://loadfocus.com/blog/2026/09/cloud-testing-pricing-models-comparison-2026https://loadfocus.com/blog/2026/09/cloud-testing-pricing-models-comparison-2026Cloud testing pricing models explained: pay-as-you-go, subscription and committed use, with break-even arithmetic and vendor prices read on 23 October 2026.Fri, 18 Sep 2026 08:47:32 GMThttps://loadfocus.com/blog/2026/09/how-to-design-load-tests-progressive-web-apps-2026https://loadfocus.com/blog/2026/09/how-to-design-load-tests-progressive-web-apps-2026Design load tests for progressive web apps: what service workers hide from a load test, and how to test cold-cache visits, offline sync bursts and push sending.Wed, 16 Sep 2026 07:46:21 GMThttps://loadfocus.com/blog/2026/09/news-analysis-2026-ai-automated-test-script-generationhttps://loadfocus.com/blog/2026/09/news-analysis-2026-ai-automated-test-script-generationAutomated test script generation with AI gives you a draft, not a verified test. A review checklist for load test scripts, with a flawed example fixed.Tue, 15 Sep 2026 09:45:00 GMThttps://loadfocus.com/blog/2026/09/opinion-continuous-validation-future-performance-testing-2026https://loadfocus.com/blog/2026/09/opinion-continuous-validation-future-performance-testing-2026Continuous validation keeps checking performance after the merge, with scheduled load tests and production monitoring. Why a CI gate alone is not enough.Mon, 14 Sep 2026 05:07:53 GMThttps://loadfocus.com/blog/2026/09/performance-testing-serverless-architectures-2026-guidehttps://loadfocus.com/blog/2026/09/performance-testing-serverless-architectures-2026-guidePerformance testing serverless architectures: measure cold starts with percentiles, ramp past concurrency limits, protect your database, and cost the test.Sat, 12 Sep 2026 07:37:32 GMThttps://loadfocus.com/blog/2026/09/common-api-performance-issues-detectionhttps://loadfocus.com/blog/2026/09/common-api-performance-issues-detection10 common API performance issues, from slow queries, pool exhaustion and 500s to 429 rate limits, big payloads and cache misses, and how to detect each one.Thu, 10 Sep 2026 08:02:09 GMThttps://loadfocus.com/blog/2026/09/multi-cloud-performance-testing-setup-guide-2026https://loadfocus.com/blog/2026/09/multi-cloud-performance-testing-setup-guide-2026Set up end-to-end multi-cloud performance testing, with distributed load generation, vendor-agnostic tooling and cost controls that hold.Tue, 08 Sep 2026 09:00:00 GMThttps://loadfocus.com/blog/2026/09/news-analysis-2026-quantum-computing-impact-cloud-testinghttps://loadfocus.com/blog/2026/09/news-analysis-2026-quantum-computing-impact-cloud-testingQuantum computers do not change load testing today. Post-quantum TLS does: what NIST and the IETF standardised, and what to measure on your endpoints.Tue, 08 Sep 2026 08:53:03 GMThttps://loadfocus.com/blog/2026/09/5g-networks-influence-cloud-testing-2026https://loadfocus.com/blog/2026/09/5g-networks-influence-cloud-testing-20265G changes the client-side latency your users see, but a cloud load generator in a datacentre does not test the radio network. What 5G means for load testing.Mon, 07 Sep 2026 09:00:00 GMThttps://loadfocus.com/blog/2026/09/case-study-boosting-ecommerce-checkout-speed-peak-loadhttps://loadfocus.com/blog/2026/09/case-study-boosting-ecommerce-checkout-speed-peak-loadHow to keep checkout fast at peak load: measure each step, find the slow query or call, and test with a ramp that matches a sale. Includes a k6 sketch.Sun, 06 Sep 2026 09:30:52 GMThttps://loadfocus.com/blog/2026/09/performance-testing-accessibility-metrics-2026https://loadfocus.com/blog/2026/09/performance-testing-accessibility-metrics-2026What performance testing can and cannot say about accessibility: WCAG 2.2 timing rules, Lighthouse and axe-core checks, and how to run them beside load tests.Sun, 06 Sep 2026 09:00:00 GMThttps://loadfocus.com/blog/2026/09/scripted-vs-codeless-api-load-testing-comparison-2026https://loadfocus.com/blog/2026/09/scripted-vs-codeless-api-load-testing-comparison-2026Compare scripted and codeless API load testing tools in 2026. Discover strengths, limitations, and decision criteria to optimize your API's performance.Sat, 05 Sep 2026 09:00:00 GMThttps://loadfocus.com/blog/2026/09/serverless-performance-testing-importance-2026https://loadfocus.com/blog/2026/09/serverless-performance-testing-importance-2026Serverless scaling is not a free pass. Why cold starts, concurrency limits and per-invocation cost make performance testing non-negotiable.Fri, 04 Sep 2026 09:00:00 GMThttps://loadfocus.com/blog/2026/09/scripted-vs-ai-driven-load-testing-approaches-2026-comparisonhttps://loadfocus.com/blog/2026/09/scripted-vs-ai-driven-load-testing-approaches-2026-comparisonExplore scripted vs AI-driven load testing approaches. Learn strengths, limitations, and decision criteria for 2026 performance optimization.Fri, 04 Sep 2026 07:38:35 GMThttps://loadfocus.com/blog/2026/09/top-7-network-protocols-performance-testing-2026https://loadfocus.com/blog/2026/09/top-7-network-protocols-performance-testing-2026Seven protocols load testers meet in 2026 (HTTP/1.1, HTTP/2, HTTP/3, WebSocket, gRPC, MQTT, SQL), what a test measures for each, and which tools support them.Thu, 03 Sep 2026 09:40:24 GMThttps://loadfocus.com/blog/2026/09/integrate-load-testing-results-with-business-kpishttps://loadfocus.com/blog/2026/09/integrate-load-testing-results-with-business-kpisRelate load test results to business KPIs honestly: conversion by response-time bucket, SLOs and error budgets, and cost per request, with worked examples.Thu, 03 Sep 2026 09:00:00 GMThttps://loadfocus.com/blog/2026/09/identify-fix-memory-leaks-load-testinghttps://loadfocus.com/blog/2026/09/identify-fix-memory-leaks-load-testingHow to find memory leaks in a load test: hold a steady load for hours, trend the heap left after each GC, diff two heap dumps, fix the reference and re-run.Wed, 02 Sep 2026 06:47:02 GMThttps://loadfocus.com/blog/2026/09/case-study-detecting-performance-regression-saas-automated-testing-2026https://loadfocus.com/blog/2026/09/case-study-detecting-performance-regression-saas-automated-testing-2026How to detect a performance regression automatically: pinned baselines, thresholds, run-to-run noise, a rank test across runs and git bisect to find the commit.Tue, 01 Sep 2026 09:00:00 GMThttps://loadfocus.com/blog/2026/08/cloud-load-testing-vs-local-enterprise-comparison-2026https://loadfocus.com/blog/2026/08/cloud-load-testing-vs-local-enterprise-comparison-2026Cloud or local load testing for enterprises: how data residency, internal network access, governance and procurement should decide, not scale or cost alone.Mon, 31 Aug 2026 09:00:00 GMThttps://loadfocus.com/blog/2026/08/serverless-computing-load-testing-2026-news-analysishttps://loadfocus.com/blog/2026/08/serverless-computing-load-testing-2026-news-analysisServerless computing changes load testing in three ways: what triggers the code, what you measure and what you pay. A short orientation with deeper guides.Sun, 30 Aug 2026 09:00:00 GMThttps://loadfocus.com/blog/2026/08/ai-chatbots-performance-testing-news-analysis-2026https://loadfocus.com/blog/2026/08/ai-chatbots-performance-testing-news-analysis-2026How to performance test an AI chatbot: time to first token, tokens per second, concurrency, 429 rate limits, streaming and cost per conversation.Sun, 30 Aug 2026 05:13:01 GMThttps://loadfocus.com/blog/2026/08/cloud-testing-standards-2026-analysishttps://loadfocus.com/blog/2026/08/cloud-testing-standards-2026-analysisWhich testing standards bear on cloud performance testing: ISO/IEC/IEEE 29119, ISO/IEC 25010 performance efficiency and ISTQB, and what each defines.Sat, 29 Aug 2026 09:00:00 GMThttps://loadfocus.com/blog/2026/08/integrating-performance-testing-devops-toolchainshttps://loadfocus.com/blog/2026/08/integrating-performance-testing-devops-toolchainsWire load tests into CI/CD: which stage runs what, how to fail a build on thresholds, and how to keep results on GitHub Actions, GitLab, Jenkins and Azure.Sat, 29 Aug 2026 09:00:00 GMThttps://loadfocus.com/blog/2026/08/cloud-testing-sustainable-software-development-opinion-2026https://loadfocus.com/blog/2026/08/cloud-testing-sustainable-software-development-opinion-2026Explore how cloud testing supports sustainable software development by optimizing resource usage, reducing waste, and driving green IT initiatives.Sat, 29 Aug 2026 08:57:24 GMThttps://loadfocus.com/blog/2026/08/case-study-scenario-load-testing-media-streaming-performancehttps://loadfocus.com/blog/2026/08/case-study-scenario-load-testing-media-streaming-performanceHow to load test a video streaming platform: what to simulate, how to model a live-event audience, a k6 sketch, and how to read the results.Fri, 28 Aug 2026 09:27:54 GMThttps://loadfocus.com/blog/2026/08/performance-testing-2026-cloud-native-applicationshttps://loadfocus.com/blog/2026/08/performance-testing-2026-cloud-native-applicationsWhy performance testing matters more for cloud-native apps in 2026, as rising complexity and user expectations reshape how teams test.Fri, 28 Aug 2026 09:00:00 GMThttps://loadfocus.com/blog/2026/08/synthetic-monitoring-vs-real-user-monitoring-comparison-2026https://loadfocus.com/blog/2026/08/synthetic-monitoring-vs-real-user-monitoring-comparison-2026Synthetic monitoring against real user monitoring: what each one sees, where they disagree, and how to decide which belongs in your stack.Fri, 28 Aug 2026 09:00:00 GMThttps://loadfocus.com/blog/2026/08/cloud-testing-standards-2026-news-analysishttps://loadfocus.com/blog/2026/08/cloud-testing-standards-2026-news-analysisWhich security and compliance standards touch cloud load testing: ISO 27001, NIST 800-53, SOC 2 and CSA CCM, and what each means for test data.Thu, 27 Aug 2026 09:00:02 GMThttps://loadfocus.com/blog/2026/08/comparing-load-testing-tools-ci-cd-2026https://loadfocus.com/blog/2026/08/comparing-load-testing-tools-ci-cd-2026Compare JMeter, k6, Gatling, Locust, Artillery and LoadFocus for CI/CD: how each runs headless, fails a build on a threshold and scales beyond one runner.Thu, 27 Aug 2026 09:00:00 GMThttps://loadfocus.com/blog/2026/08/cloud-vs-local-mobile-performance-testing-comparison-2026https://loadfocus.com/blog/2026/08/cloud-vs-local-mobile-performance-testing-comparison-2026Explore a detailed comparison of cloud testing vs local testing for mobile performance testing. Learn which approach fits your needs in 2026.Wed, 26 Aug 2026 08:11:11 GMThttps://loadfocus.com/blog/2026/08/case-study-optimizing-mobile-api-performance-global-retail-brand-2026https://loadfocus.com/blog/2026/08/case-study-optimizing-mobile-api-performance-global-retail-brand-2026Optimize mobile API performance: shrink payloads, paginate, cache, compress, cut chatty calls, refresh tokens safely and test on slow networks.Fri, 21 Aug 2026 06:40:59 GMThttps://loadfocus.com/blog/2026/08/endurance-testing-soak-testinghttps://loadfocus.com/blog/2026/08/endurance-testing-soak-testingEndurance testing and soak testing are the same practice: normal load held for hours. What it catches, how long to run it, and how to read the trend.Thu, 20 Aug 2026 13:18:17 GMThttps://loadfocus.com/blog/2026/08/spike-testing-in-performance-testinghttps://loadfocus.com/blog/2026/08/spike-testing-in-performance-testingSpike testing applies traffic suddenly instead of ramping. Why autoscaling and cold caches fail in that window, and why recovery is half the test.Thu, 20 Aug 2026 13:18:17 GMThttps://loadfocus.com/blog/2026/08/volume-testing-in-software-testinghttps://loadfocus.com/blog/2026/08/volume-testing-in-software-testingVolume testing increases the data a system holds rather than the user count. What it finds, how to run one, and how to read the curve it produces.Thu, 20 Aug 2026 13:18:17 GMThttps://loadfocus.com/blog/2026/08/best-api-monitoring-toolshttps://loadfocus.com/blog/2026/08/best-api-monitoring-toolsA practical comparison of 10 API monitoring tools, what each is genuinely good at, which have real free tiers, and the open source options worth running.Wed, 19 Aug 2026 16:52:21 GMThttps://loadfocus.com/blog/2026/08/microservices-load-testing-cloud-guide-2026https://loadfocus.com/blog/2026/08/microservices-load-testing-cloud-guide-2026Microservices load testing explained: service-level versus end-to-end tests, dependencies and mocks, tracing, autoscaling and circuit breaker behaviour.Thu, 13 Aug 2026 06:43:59 GMThttps://loadfocus.com/blog/2026/08/cloud-vs-on-premise-website-monitoring-comparison-2026https://loadfocus.com/blog/2026/08/cloud-vs-on-premise-website-monitoring-comparison-2026Cloud vs on-premise website monitoring: what each can see, where private networks and data rules matter, and when running both is the sensible answer.Wed, 12 Aug 2026 08:04:29 GMThttps://loadfocus.com/blog/2026/08/edge-computing-impact-cloud-load-testing-2026https://loadfocus.com/blog/2026/08/edge-computing-impact-cloud-load-testing-2026Edge computing changes what a load test measures: mostly the CDN cache, not your origin. Edge function limits, how to test them, and the CDN load testing rules.Sun, 09 Aug 2026 09:49:25 GMThttps://loadfocus.com/blog/2026/08/continuous-performance-testing-development-standard-2026https://loadfocus.com/blog/2026/08/continuous-performance-testing-development-standard-2026Continuous performance testing runs load tests on every change. What to run per pull request, nightly and before release, and how to fail a build on thresholds.Sat, 08 Aug 2026 05:03:32 GMThttps://loadfocus.com/blog/2026/08/saas-load-testing-case-study-ai-scaling-2026https://loadfocus.com/blog/2026/08/saas-load-testing-case-study-ai-scaling-2026A practical plan for SaaS load testing: set targets from projected growth, model tenants, test regions, gate releases in CI and read the results.Fri, 07 Aug 2026 05:33:18 GMThttps://loadfocus.com/blog/2026/08/api-performance-testing-oauth2-guidehttps://loadfocus.com/blog/2026/08/api-performance-testing-oauth2-guideOAuth2 makes load testing harder because tokens expire mid-test and refresh adds its own latency.Thu, 06 Aug 2026 09:17:49 GMThttps://loadfocus.com/blog/2026/08/open-source-vs-commercial-load-testing-tools-2026-comparisonhttps://loadfocus.com/blog/2026/08/open-source-vs-commercial-load-testing-tools-2026-comparisonOpen source vs commercial load testing tools compared on cost, scaling, CI/CD, support and team skills, with vendor prices read off their pages in October 2026.Wed, 05 Aug 2026 08:39:54 GMThttps://loadfocus.com/blog/2026/07/monitor-mcp-serverhttps://loadfocus.com/blog/2026/07/monitor-mcp-serverMonitor an MCP server over Streamable HTTP: send a real JSON-RPC tools/list check, assert status, body and latency, and alert on auth and version errors.Wed, 22 Jul 2026 11:04:30 GMThttps://loadfocus.com/blog/2026/07/data-driven-load-testing-scripts-complex-user-journeyshttps://loadfocus.com/blog/2026/07/data-driven-load-testing-scripts-complex-user-journeysData-driven load testing gives each virtual user different data and paths. How to pick data, keep rows unique per user, model journeys and avoid mistakes.Tue, 14 Jul 2026 07:55:06 GMThttps://loadfocus.com/blog/2026/07/ai-performance-testing-tools-2026-news-analysishttps://loadfocus.com/blog/2026/07/ai-performance-testing-tools-2026-news-analysisWhat AI actually does in performance testing today: script drafting, result summaries and where it stops, with tools checked against their own docs.Fri, 10 Jul 2026 05:52:08 GMThttps://loadfocus.com/blog/2026/07/essential-features-cloud-testing-platform-2026https://loadfocus.com/blog/2026/07/essential-features-cloud-testing-platform-2026Judge a platform on CI integration and result analysis, not on maximum virtual users.Sun, 05 Jul 2026 08:33:21 GMThttps://loadfocus.com/blog/2026/07/scheduled-load-testshttps://loadfocus.com/blog/2026/07/scheduled-load-testsA scheduled test only helps if it alerts, since nobody reads a passing report. Match frequency to deploy cadence rather than running nightly by default.Sat, 04 Jul 2026 11:53:16 GMThttps://loadfocus.com/blog/2026/07/simulate-realistic-user-behavior-load-testing-scenarioshttps://loadfocus.com/blog/2026/07/simulate-realistic-user-behavior-load-testing-scenariosMix journeys by real proportion rather than testing each endpoint evenly. Vary data per user, or caching makes the system look faster than it is.Sat, 04 Jul 2026 06:02:30 GMThttps://loadfocus.com/blog/2026/07/import-curl-har-postman-openapi-to-load-testshttps://loadfocus.com/blog/2026/07/import-curl-har-postman-openapi-to-load-testsTurn a cURL command, HAR file, Postman collection or OpenAPI spec into a runnable k6 script or JMeter test plan, free in your browser, then run it in the cloud.Thu, 02 Jul 2026 12:52:38 GMThttps://loadfocus.com/blog/2026/07/cloud-testing-challenges-overcome-2026https://loadfocus.com/blog/2026/07/cloud-testing-challenges-overcome-2026The main cloud testing challenges: environments unlike production, risky test data, noisy shared hardware, third-party services and cost, with a fix for each.Wed, 01 Jul 2026 09:00:00 GMThttps://loadfocus.com/blog/2026/06/running-k6-at-scalehttps://loadfocus.com/blog/2026/06/running-k6-at-scaleThree ways to run k6 at scale: self-hosted k6 with the k6 Operator, Grafana Cloud k6, or a managed platform, with the cost and effort of each.Mon, 29 Jun 2026 08:40:32 GMThttps://loadfocus.com/blog/2026/06/api-performance-testing-challenges-solutions-2026https://loadfocus.com/blog/2026/06/api-performance-testing-challenges-solutions-2026The six problems that most often undermine API performance tests (dependencies, test data, auth, load model, metrics, CI) and a concrete fix for each.Sun, 28 Jun 2026 06:08:49 GMThttps://loadfocus.com/blog/2026/06/impact-of-network-latency-cloud-load-testing-accuracyhttps://loadfocus.com/blog/2026/06/impact-of-network-latency-cloud-load-testing-accuracyEvery response time a load test records includes network latency. See how test location and new connections inflate results, and how to isolate server time.Thu, 25 Jun 2026 07:45:08 GMThttps://loadfocus.com/blog/2026/06/k6-vs-jmeterhttps://loadfocus.com/blog/2026/06/k6-vs-jmeterk6 vs JMeter compared in practice, plus Gatling, Locust and LoadRunner: scripting language, protocols, CI/CD, reporting and what scaling really costs.Mon, 22 Jun 2026 09:13:42 GMThttps://loadfocus.com/blog/2026/06/performance-testing-mistakes-how-to-avoidhttps://loadfocus.com/blog/2026/06/performance-testing-mistakes-how-to-avoidSeven performance testing mistakes that make results lie: testing late, staging unlike production, fake data, averages and an overloaded load generator.Sun, 21 Jun 2026 07:05:49 GMThttps://loadfocus.com/blog/2026/06/cloud-testing-security-best-practices-2026https://loadfocus.com/blog/2026/06/cloud-testing-security-best-practices-2026Cloud testing security in practice: keep real data out of test environments, lock down access and secrets, and allow load generators safely.Mon, 15 Jun 2026 08:44:45 GMThttps://loadfocus.com/blog/2026/06/reducing-api-latency-distributed-load-testing-case-studyhttps://loadfocus.com/blog/2026/06/reducing-api-latency-distributed-load-testing-case-studyTest your API from several regions, read p95 and p99 per region, split each request into DNS, connect, TLS and wait, then fix the largest phase and retest.Mon, 08 Jun 2026 07:35:42 GMThttps://loadfocus.com/blog/2026/06/ai-automated-load-testing-impact-2026https://loadfocus.com/blog/2026/06/ai-automated-load-testing-impact-2026AI in automated load testing today: drafting scripts, summarising results and where it falls short, plus how to run automated load tests in CI with gates.Wed, 03 Jun 2026 07:58:20 GMThttps://loadfocus.com/blog/2026/05/optimize-load-testing-single-page-applicationshttps://loadfocus.com/blog/2026/05/optimize-load-testing-single-page-applicationsAn SPA does its work after the initial HTML, so HTTP-level tests miss most of it. Test the API calls the app makes, weighted the way the app makes them.Thu, 28 May 2026 08:19:28 GMThttps://loadfocus.com/blog/2026/05/what-are-virtual-users-in-load-testinghttps://loadfocus.com/blog/2026/05/what-are-virtual-users-in-load-testingA virtual user simulates one person's session, pauses included. How VUs differ from requests per second, and why think time decides the ratio.Wed, 27 May 2026 08:35:15 GMThttps://loadfocus.com/blog/2026/05/load-testing-vs-stress-testinghttps://loadfocus.com/blog/2026/05/load-testing-vs-stress-testingLoad tests verify how your system behaves under expected traffic. Stress tests push past it to find the breaking point.Mon, 25 May 2026 10:17:31 GMThttps://loadfocus.com/blog/2026/05/performance-testing-priority-mobile-first-businesses-2026https://loadfocus.com/blog/2026/05/performance-testing-priority-mobile-first-businesses-2026Mobile is most of web traffic, and phones run on slower networks and CPUs. What to measure (Core Web Vitals, API load), on which conditions, and how to test.Tue, 19 May 2026 00:00:00 GMThttps://loadfocus.com/blog/2026/05/serverless-architecture-performance-testing-analysis-2026https://loadfocus.com/blog/2026/05/serverless-architecture-performance-testing-analysis-2026Serverless changes how you read load test results: cold starts, throttling and downstream limits look different on the client and in the provider metrics.Wed, 13 May 2026 00:00:00 GMThttps://loadfocus.com/blog/2026/05/simplified-test-script-creation-load-testing-efficiency-2026https://loadfocus.com/blog/2026/05/simplified-test-script-creation-load-testing-efficiency-2026Simplified test script creation: five ways to get a load test script (write, record, import, AI draft, in-browser) and the checks any generated script needs.Tue, 12 May 2026 00:00:00 GMThttps://loadfocus.com/blog/2026/05/cutting-api-response-times-case-studyhttps://loadfocus.com/blog/2026/05/cutting-api-response-times-case-studyCut API response times: find the slowest endpoint, split its time by dependency, parallelize or cache the critical path, then retest the percentiles.Mon, 11 May 2026 00:00:00 GMThttps://loadfocus.com/blog/2026/04/intuitive-dashboards-load-testing-platforms-2026https://loadfocus.com/blog/2026/04/intuitive-dashboards-load-testing-platforms-2026What an intuitive load testing dashboard shows: percentiles instead of averages, error rate, throughput, results per region and a trend against a baseline.Tue, 28 Apr 2026 00:00:00 GMThttps://loadfocus.com/blog/2026/04/mobile-app-load-times-case-study-cloud-load-testinghttps://loadfocus.com/blog/2026/04/mobile-app-load-times-case-study-cloud-load-testingMeasure mobile app load times with cloud load testing: record the launch requests, replay them under load from your users' regions, and read p95 and errors.Mon, 27 Apr 2026 00:00:01 GMThttps://loadfocus.com/blog/2026/04/performance-benchmarks-web-applications-guide-2026https://loadfocus.com/blog/2026/04/performance-benchmarks-web-applications-guide-2026Performance benchmarks for web applications: Google's targets (LCP 2.5 s, INP 200 ms, CLS 0.1 at p75), p95 response time goals under load, and how to set them.Sun, 26 Apr 2026 00:00:01 GMThttps://loadfocus.com/blog/2026/04/cloud-load-testing-vs-on-premise-for-startups-2026https://loadfocus.com/blog/2026/04/cloud-load-testing-vs-on-premise-for-startups-2026A startup guide to cloud vs on-premise load testing: what each costs in engineer time, where compliance really bites, and a rule for when to switch.Sat, 25 Apr 2026 00:00:00 GMThttps://loadfocus.com/blog/2026/04/optimize-api-performance-testing-faster-resultshttps://loadfocus.com/blog/2026/04/optimize-api-performance-testing-faster-resultsTen ways to get faster, more reliable API performance test results: p95 targets, load in requests per second, varied test data and CI gates, with a k6 example.Fri, 24 Apr 2026 00:00:00 GMThttps://loadfocus.com/blog/2026/04/realistic-load-testing-scenarios-ecommercehttps://loadfocus.com/blog/2026/04/realistic-load-testing-scenarios-ecommerceRealistic e-commerce load testing: build the browse, search, cart and checkout mix from your funnel, give each shopper unique data and keep payments safe.Thu, 23 Apr 2026 00:00:00 GMThttps://loadfocus.com/blog/2026/04/cloud-testing-trends-2026-evolution-disruption-what-ctos-need-to-knowhttps://loadfocus.com/blog/2026/04/cloud-testing-trends-2026-evolution-disruption-what-ctos-need-to-knowCloud testing trends in 2026 for CTOs: six decisions on pipeline placement, test ownership, load generation, vendor risk, test data and AI use.Tue, 21 Apr 2026 00:00:00 GMThttps://loadfocus.com/blog/2026/04/user-friendly-testing-platforms-devops-2026https://loadfocus.com/blog/2026/04/user-friendly-testing-platforms-devops-2026What makes a testing platform usable for a DevOps team: five checks to run in a trial, where easy tools fall short, and what LoadFocus offers.Mon, 20 Apr 2026 00:00:01 GMThttps://loadfocus.com/blog/2026/04/loadfocus-vs-jmeter-enterprise-load-testing-comparison-2026https://loadfocus.com/blog/2026/04/loadfocus-vs-jmeter-enterprise-load-testing-comparison-2026LoadFocus runs your JMeter scripts in the cloud. Compare self-run Apache JMeter and LoadFocus on scaling, protocols, reporting and CI/CD for enterprise teams.Fri, 17 Apr 2026 00:00:01 GMThttps://loadfocus.com/blog/2026/04/best-cloud-testing-tools-2026https://loadfocus.com/blog/2026/04/best-cloud-testing-tools-2026Seven cloud performance testing tools compared for 2026: what scripts each runs, where the load comes from, and how each fits CI, checked on vendor sites.Thu, 16 Apr 2026 00:00:00 GMThttps://loadfocus.com/blog/2026/04/automated-load-testing-microservices-loadfocushttps://loadfocus.com/blog/2026/04/automated-load-testing-microservices-loadfocusAutomated load testing for microservices with LoadFocus: one test per service, pass/fail thresholds, a CI/CD gate and scheduled runs, step by step.Wed, 15 Apr 2026 00:00:01 GMThttps://loadfocus.com/blog/2025/10/mastering-javascript-for-performancehttps://loadfocus.com/blog/2025/10/mastering-javascript-for-performanceCut JavaScript main-thread blocking: long tasks, INP, defer and async, code splitting, yielding and web workers, plus what a backend load test does not measure.Thu, 09 Oct 2025 09:15:00 GMThttps://loadfocus.com/blog/2025/10/sample-non-functional-requirementshttps://loadfocus.com/blog/2025/10/sample-non-functional-requirementsSample non functional requirements with measurable targets for performance, availability and security, plus a template, e-commerce examples and tests.Wed, 08 Oct 2025 08:14:00 GMThttps://loadfocus.com/blog/2025/10/rest-assured-api-testing-guidehttps://loadfocus.com/blog/2025/10/rest-assured-api-testing-guideREST Assured is a Java library for functional API tests. Set up 6.2.0 with JUnit 5, run it against a public API, and see why it is no load tool.Tue, 07 Oct 2025 11:13:00 GMThttps://loadfocus.com/blog/2025/10/mastering-software-performance-engineeringhttps://loadfocus.com/blog/2025/10/mastering-software-performance-engineeringSoftware performance engineering builds speed in from design to production. What it is, how it differs from performance testing, and how to start, step by step.Mon, 06 Oct 2025 10:13:00 GMThttps://loadfocus.com/blog/2025/10/canary-deploymenthttps://loadfocus.com/blog/2025/10/canary-deploymentA canary sends a small traffic slice to the new version so failures stay small and reversible.Sun, 05 Oct 2025 09:15:00 GMThttps://loadfocus.com/blog/2025/10/application-performance-monitoring-toolshttps://loadfocus.com/blog/2025/10/application-performance-monitoring-toolsCompare application performance monitoring tools: what APM shows, how Datadog, New Relic, open source options charge, and where synthetic checks fit.Sat, 04 Oct 2025 08:15:00 GMThttps://loadfocus.com/blog/2025/10/smoke-test-in-software-testinghttps://loadfocus.com/blog/2025/10/smoke-test-in-software-testingSmoke testing verifies that a build's critical paths work before deeper testing starts. How it differs from sanity and regression testing, with examples.Thu, 02 Oct 2025 15:23:50 GMThttps://loadfocus.com/blog/2025/09/online-api-tester-complete-guide-to-testing-apishttps://loadfocus.com/blog/2025/09/online-api-tester-complete-guide-to-testing-apisAn online API tester sends HTTP requests from a browser. See what it does well, where CORS, private networks and secrets limit it, and when to use curl or k6.Tue, 30 Sep 2025 20:01:22 GMThttps://loadfocus.com/blog/2025/05/unit-testing-vs-functional-testinghttps://loadfocus.com/blog/2025/05/unit-testing-vs-functional-testingUnit tests check a piece in isolation; functional tests check behaviour a user would notice.Thu, 08 May 2025 07:48:00 GMThttps://loadfocus.com/blog/2025/05/concurrency-testinghttps://loadfocus.com/blog/2025/05/concurrency-testingConcurrency testing finds races, deadlocks and lost updates when operations overlap. Runnable Python demos with fixes, and how it differs from load testing.Wed, 07 May 2025 13:02:00 GMThttps://loadfocus.com/blog/2025/05/using-csv-data-in-jmeter-testshttps://loadfocus.com/blog/2025/05/using-csv-data-in-jmeter-testsUsing CSV data in JMeter tests: plan the file, give every thread its own rows, handle end of file, pick a sharing mode and parameterise logins.Wed, 07 May 2025 07:37:20 GMThttps://loadfocus.com/blog/2025/05/ai-load-testing-benchmark-any-tech-stack-no-codehttps://loadfocus.com/blog/2025/05/ai-load-testing-benchmark-any-tech-stack-no-codeRun a load test without writing a script, then get AI analysis tuned to your tech stack. What it reads, what the output looks like, and what it cannot tell you.Tue, 06 May 2025 17:25:21 GMThttps://loadfocus.com/blog/2025/05/batch-testing-in-software-testinghttps://loadfocus.com/blog/2025/05/batch-testing-in-software-testingBatch testing groups related cases into one run, which cuts setup cost and shortens feedback.Mon, 05 May 2025 12:57:00 GMThttps://loadfocus.com/blog/comparisons/continuous-integration-ci-tools/https://loadfocus.com/blog/comparisons/continuous-integration-ci-tools/Continuous integration tools compared: pipeline speed decides whether CI gets used, ecosystem fit saves weeks, and self-hosting means a runner fleet to run.Thu, 01 May 2025 08:51:00 GMThttps://loadfocus.com/blog/2025/04/contract-testinghttps://loadfocus.com/blog/2025/04/contract-testingContract testing checks that a provider and consumer still agree, without running both together.Wed, 30 Apr 2025 13:11:00 GMThttps://loadfocus.com/blog/comparisons/chrome-developer-tools-for-mobile/https://loadfocus.com/blog/comparisons/chrome-developer-tools-for-mobile/Chrome developer tools for mobile: remote USB debugging shows the real device, device mode is for layout, and throttling shows what slow connections do.Mon, 28 Apr 2025 08:21:00 GMThttps://loadfocus.com/blog/2025/04/parameterization-in-jmeterhttps://loadfocus.com/blog/2025/04/parameterization-in-jmeterJMeter parameterization replaces hardcoded values with variables. Compare CSV Data Set Config, __P, User Parameters and random functions, run on JMeter 5.6.3.Wed, 23 Apr 2025 13:06:00 GMThttps://loadfocus.com/blog/comparisons/performance-testing-companies/https://loadfocus.com/blog/comparisons/performance-testing-companies/Performance testing companies in 2026: hire for a one-off launch rather than continuous testing, and ask whether they leave scripts behind or just a report.Wed, 23 Apr 2025 08:21:00 GMThttps://loadfocus.com/blog/2025/04/jmeter-ramp-up-periodhttps://loadfocus.com/blog/2025/04/jmeter-ramp-up-periodThe JMeter ramp-up period is the time Thread Group takes to start all its threads. Formula, a measured 100-thread example, and why ramp-up is not concurrency.Tue, 22 Apr 2025 07:10:09 GMThttps://loadfocus.com/blog/comparisons/grpc-load-testing-tools/https://loadfocus.com/blog/comparisons/grpc-load-testing-tools/gRPC load testing tools must speak HTTP/2 and protobuf. Compare five options, and test streaming calls separately because they behave differently under load.Mon, 21 Apr 2025 08:49:00 GMThttps://loadfocus.com/blog/2025/04/calculate-concurrent-usershttps://loadfocus.com/blog/2025/04/calculate-concurrent-usersConcurrent, simultaneous and active users are three different numbers, and mixing them invalidates the test.Sat, 19 Apr 2025 13:21:42 GMThttps://loadfocus.com/blog/2025/04/hardest-part-of-load-performance-testinghttps://loadfocus.com/blog/2025/04/hardest-part-of-load-performance-testingThe hard part is realism: matching real user behaviour, data and think time.Fri, 18 Apr 2025 12:19:00 GMThttps://loadfocus.com/blog/comparisons/bug-tracking-tools/https://loadfocus.com/blog/comparisons/bug-tracking-tools/Bug tracking tools compared: the workflow matters more than the tool, repository integration keeps issues tied to code, and reporting surfaces repeat bugs.Fri, 18 Apr 2025 08:49:00 GMThttps://loadfocus.com/blog/2025/04/rest-api-interview-questionshttps://loadfocus.com/blog/2025/04/rest-api-interview-questionsBe able to explain status code choices, since that is where vague answers show. Knowing when REST is the wrong choice is as useful as defending it.Thu, 17 Apr 2025 12:12:00 GMThttps://loadfocus.com/blog/2025/04/performance-testing-types-key-benefits-exampleshttps://loadfocus.com/blog/2025/04/performance-testing-types-key-benefits-examplesSoak testing finds leaks that a short run cannot, and spike testing finds recovery behaviour. Pick the type from the risk you are trying to retire.Wed, 16 Apr 2025 09:44:52 GMThttps://loadfocus.com/blog/comparisons/android-app-automation-testing-tools/https://loadfocus.com/blog/comparisons/android-app-automation-testing-tools/Android app automation testing tools compared: Appium for cross-platform reuse, Espresso for speed, and why device coverage costs more than the framework.Wed, 16 Apr 2025 08:49:00 GMThttps://loadfocus.com/blog/comparisons/mobile-app-security-testing-tools/https://loadfocus.com/blog/comparisons/mobile-app-security-testing-tools/Mobile app security testing tools: static and dynamic analysis find different problems, insecure storage is the common finding, so test the release build.Mon, 14 Apr 2025 08:48:00 GMThttps://loadfocus.com/blog/2025/04/guaranteed-faster-deployments-the-vital-loadfocus-circleci-connectionhttps://loadfocus.com/blog/2025/04/guaranteed-faster-deployments-the-vital-loadfocus-circleci-connectionRun a saved LoadFocus JMeter test from CircleCI and fail the build on a missed threshold. A checked config, traps in the docs, and how to test the gate.Sat, 12 Apr 2025 07:15:46 GMThttps://loadfocus.com/blog/2025/04/how-to-boost-performance-testing-integrating-loadfocus-api-with-bitbucket-pipelineshttps://loadfocus.com/blog/2025/04/how-to-boost-performance-testing-integrating-loadfocus-api-with-bitbucket-pipelinesRun a saved LoadFocus JMeter test from Bitbucket Pipelines and stop the build on a missed threshold. Config checked against Bitbucket docs, plus the CLI traps.Wed, 09 Apr 2025 09:06:33 GMThttps://loadfocus.com/blog/comparisons/penetration-testing-tools/https://loadfocus.com/blog/comparisons/penetration-testing-tools/Penetration testing tools find known issue classes while testers find system-specific ones. Scan regularly, pen test periodically, and get authorisation first.Wed, 09 Apr 2025 08:28:00 GMThttps://loadfocus.com/blog/comparisons/website-accessibility-testing-tools/https://loadfocus.com/blog/comparisons/website-accessibility-testing-tools/Accessibility testing tools find only part of the issues: axe-core says about 57% of WCAG issues on average. Compare the tools, then add manual checks.Mon, 07 Apr 2025 08:47:00 GMThttps://loadfocus.com/blog/comparisons/website-speed-test-tools/https://loadfocus.com/blog/comparisons/website-speed-test-tools/Website speed test tools for 2026: combine lab diagnostics with field data, test from your users' regions, and chase specific fixes rather than the score.Fri, 04 Apr 2025 08:04:00 GMThttps://loadfocus.com/blog/comparisons/sap-testing-tools/https://loadfocus.com/blog/comparisons/sap-testing-tools/SAP testing tools for 2026: transaction coverage and test data matter more than the framework, and upgrades drive regression cycles that automation repays.Wed, 02 Apr 2025 08:28:00 GMThttps://loadfocus.com/blog/comparisons/cross-browser-compatibility-testing-tools/https://loadfocus.com/blog/comparisons/cross-browser-compatibility-testing-tools/Cross-browser testing tools for 2026: test the browsers in your analytics, use real devices for rendering bugs, and run in parallel to keep CI viable.Tue, 01 Apr 2025 08:27:00 GMThttps://loadfocus.com/blog/comparisons/codeless-testing-tools/https://loadfocus.com/blog/comparisons/codeless-testing-tools/Codeless testing tools let more people write tests, but they struggle with dynamic content, and recorded tests break on layout changes. Compare 10 options.Mon, 31 Mar 2025 08:27:00 GMThttps://loadfocus.com/blog/comparisons/iot-testing-tools/https://loadfocus.com/blog/comparisons/iot-testing-tools/IoT testing tools for 2026: connectivity and protocol coverage matter more than device count. Simulate fleets, validate on real devices, test firmware updates.Thu, 27 Mar 2025 08:52:26 GMThttps://loadfocus.com/blog/comparisons/enterprise-load-testing-tools/https://loadfocus.com/blog/comparisons/enterprise-load-testing-tools/Enterprise load testing tools for 2026 compared on distribution, access control, reporting and CI fit, plus the expertise budget that often exceeds the licence.Wed, 26 Mar 2025 19:37:09 GMThttps://loadfocus.com/blog/comparisons/test-automation-statistics/https://loadfocus.com/blog/comparisons/test-automation-statistics/Test automation statistics for 2026, and how to read them: useful for direction and framing investment, not for benchmarking or setting your team's targets.Fri, 21 Mar 2025 15:11:00 GMThttps://loadfocus.com/blog/comparisons/negative-testing/https://loadfocus.com/blog/comparisons/negative-testing/Negative testing checks that a system rejects what it should. Cover invalid, boundary and malformed inputs, and assert on the error returned, not just failure.Wed, 19 Mar 2025 15:10:00 GMThttps://loadfocus.com/blog/comparisons/black-box-testing-techniques/https://loadfocus.com/blog/comparisons/black-box-testing-techniques/Black box testing techniques that work from the specification: boundary values and equivalence partitions give the most coverage for each test written.Mon, 17 Mar 2025 15:12:00 GMThttps://loadfocus.com/blog/comparisons/test-automation-frameworks/https://loadfocus.com/blog/comparisons/test-automation-frameworks/Test automation frameworks for 2026: pick one in your team's language, run it headless in CI, and remember test design matters more than framework choice.Fri, 14 Mar 2025 15:10:00 GMThttps://loadfocus.com/blog/comparisons/performance-testing-enterprise-software/https://loadfocus.com/blog/comparisons/performance-testing-enterprise-software/Performance testing best practices for enterprise software: set pass criteria first, use realistic data volumes, and test batch and integration windows too.Wed, 12 Mar 2025 15:08:00 GMThttps://loadfocus.com/blog/comparisons/enterprise-performance-testing-challenges/https://loadfocus.com/blog/comparisons/enterprise-performance-testing-challenges/Enterprise performance testing challenges: environment parity, test data and team coordination block releases, and testing late makes findings architectural.Mon, 10 Mar 2025 15:12:00 GMThttps://loadfocus.com/blog/comparisons/benefits-performance-testing-business/https://loadfocus.com/blog/comparisons/benefits-performance-testing-business/Performance testing benefits for your business: slow pages lose conversions, early testing costs less, and results should be framed as revenue protected.Fri, 07 Mar 2025 15:07:00 GMThttps://loadfocus.com/blog/2025/03/enterprise-software-testinghttps://loadfocus.com/blog/2025/03/enterprise-software-testingEnterprise testing is dominated by integration and data, not by writing more unit tests.Thu, 06 Mar 2025 15:21:16 GMThttps://loadfocus.com/blog/comparisons/dns-monitoring-tools/https://loadfocus.com/blog/comparisons/dns-monitoring-tools/DNS monitoring tools for 2026: DNS failures take everything down unseen by app monitoring, so check several resolvers and regions, plus expiry and DNSSEC.Thu, 09 Jan 2025 06:17:00 GMThttps://loadfocus.com/blog/comparisons/asset-management-software/https://loadfocus.com/blog/comparisons/asset-management-software/IT asset management software for 2026: automatic discovery, licence compliance and ticketing integration matter more than the asset database itself.Mon, 30 Dec 2024 06:17:00 GMThttps://loadfocus.com/blog/comparisons/infrastructure-monitoring-tools/https://loadfocus.com/blog/comparisons/infrastructure-monitoring-tools/Infrastructure monitoring tools for 2026: collect metrics, logs and traces, alert only on user-visible symptoms, and set a retention policy before costs grow.Thu, 26 Dec 2024 06:17:00 GMThttps://loadfocus.com/blog/comparisons/server-monitoring-software/https://loadfocus.com/blog/comparisons/server-monitoring-software/Server monitoring software for 2026: agent-based for depth, agentless for coverage. Alert on saturation and error rate, and plan retention and alert routing.Wed, 18 Dec 2024 06:17:00 GMThttps://loadfocus.com/blog/comparisons/network-monitoring-software/https://loadfocus.com/blog/comparisons/network-monitoring-software/Network monitoring software reviewed: watch the path rather than just the endpoints, baseline normal traffic first, and use both SNMP and flow data together.Mon, 16 Dec 2024 06:29:00 GMThttps://loadfocus.com/blog/comparisons/cloud-security-tools/https://loadfocus.com/blog/comparisons/cloud-security-tools/Cloud security tools reviewed: misconfiguration causes more breaches than exploits, so start with posture management and keep alert volume triageable.Thu, 12 Dec 2024 06:28:00 GMThttps://loadfocus.com/blog/comparisons/cloud-management-platforms/https://loadfocus.com/blog/comparisons/cloud-management-platforms/Cloud management platforms compared: a CMP earns its place with multi-cloud or cost governance, and drift handling is where the promises usually break.Fri, 06 Dec 2024 06:27:00 GMThttps://loadfocus.com/blog/comparisons/web-application-testing-tools/https://loadfocus.com/blog/comparisons/web-application-testing-tools/Web application testing tools for 2026: cover functional, performance and accessibility separately, and favour CI-friendly tools whose results you can diff.Thu, 05 Dec 2024 06:45:07 GMThttps://loadfocus.com/blog/2024/10/monitoring-best-practices-devops-developershttps://loadfocus.com/blog/2024/10/monitoring-best-practices-devops-developersMonitor what users experience first, then the infrastructure underneath it.Thu, 31 Oct 2024 12:13:18 GMThttps://loadfocus.com/blog/2024/10/how-to-improve-user-experience-using-synthetic-monitoringhttps://loadfocus.com/blog/2024/10/how-to-improve-user-experience-using-synthetic-monitoringSynthetic monitoring runs a scripted journey on a schedule, so you find failures before users report them.Wed, 30 Oct 2024 11:52:06 GMThttps://loadfocus.com/blog/comparisons/observability-tools/https://loadfocus.com/blog/comparisons/observability-tools/Observability tools for 2026: ask new questions without new instrumentation, start with traces if you choose one pillar, and watch cardinality costs closely.Tue, 29 Oct 2024 13:39:59 GMThttps://loadfocus.com/blog/comparisons/redis-monitoring-tools/https://loadfocus.com/blog/comparisons/redis-monitoring-tools/Redis monitoring tools compared: Redis Insight, Prometheus, Datadog, New Relic, Dynatrace and 5 more, plus the INFO, SLOWLOG and LATENCY metrics to alert on.Mon, 28 Oct 2024 16:35:22 GMThttps://loadfocus.com/blog/comparisons/saas-affiliate-programs/https://loadfocus.com/blog/comparisons/saas-affiliate-programs/SaaS affiliate programs that pay well in 2026: recurring commission beats one-off payouts, and cookie windows and attribution decide what you actually earn.Wed, 23 Oct 2024 09:39:13 GMThttps://loadfocus.com/blog/comparisons/antivirus-software/https://loadfocus.com/blog/comparisons/antivirus-software/Antivirus software for Windows and Mac compared on performance impact and false positives, since detection rates now cluster closely across the top tools.Fri, 11 Oct 2024 16:37:44 GMThttps://loadfocus.com/blog/comparisons/jmeter-testing-tools/https://loadfocus.com/blog/comparisons/jmeter-testing-tools/15 JMeter testing tools compared for 2026, plus 3 open-source options: which ones run your existing .jmx files, which replace JMeter, and where each one fits.Fri, 04 Oct 2024 06:46:25 GMThttps://loadfocus.com/blog/comparisons/usability-testing-tools/https://loadfocus.com/blog/comparisons/usability-testing-tools/Usability testing tools for 2026: five users surface most problems, recordings show what happened while interviews explain why. Test the task, not the UI.Wed, 25 Sep 2024 14:48:10 GMThttps://loadfocus.com/blog/comparisons/screen-capture-tools/https://loadfocus.com/blog/comparisons/screen-capture-tools/Screen capture tools for 2026 compared on annotation, video for timing issues, and where recordings are stored, since screens often hold customer data.Tue, 24 Sep 2024 15:15:10 GMThttps://loadfocus.com/blog/comparisons/chrome-extensions-for-testing/https://loadfocus.com/blog/comparisons/chrome-extensions-for-testing/Chrome extensions for testing in 2026: best for capture and inspection rather than running suites. Audit permissions first, since they see every page.Tue, 17 Sep 2024 14:46:00 GMThttps://loadfocus.com/blog/comparisons/devops-automation-tools/https://loadfocus.com/blog/comparisons/devops-automation-tools/DevOps automation tools for 2026: automate build, deploy and rollback handoffs first, and prefer tools with wide integrations over ones that need a specialist.Fri, 13 Sep 2024 16:42:10 GMThttps://loadfocus.com/blog/2024/08/chromium-vs-chromehttps://loadfocus.com/blog/2024/08/chromium-vs-chromeChromium is the open-source base; Chrome adds proprietary codecs, auto-update and Google services.Fri, 23 Aug 2024 17:51:49 GMThttps://loadfocus.com/blog/comparisons/top-5-ssl-certificate-monitoring-tools-to-keep-your-website-secure-in-2024/https://loadfocus.com/blog/comparisons/top-5-ssl-certificate-monitoring-tools-to-keep-your-website-secure-in-2024/SSL certificate monitoring tools prevent expiry outages. Alert weeks ahead, since renewal and deployment are separate steps, and check the deployed chain too.Wed, 14 Aug 2024 14:17:38 GMThttps://loadfocus.com/blog/comparisons/free-ssl-checkers/https://loadfocus.com/blog/comparisons/free-ssl-checkers/Free SSL checkers verify the chain, expiry and configuration. An incomplete chain works in browsers but fails in API clients, which is why it goes unnoticed.Wed, 14 Aug 2024 10:09:59 GMThttps://loadfocus.com/blog/comparisons/self-hosted-status-pages/https://loadfocus.com/blog/comparisons/self-hosted-status-pages/Self-hosted status pages for 2026: a status page must not share infrastructure with what it reports on, and updates should come from monitoring, not by hand.Tue, 13 Aug 2024 12:44:00 GMThttps://loadfocus.com/blog/comparisons/apm-tools/https://loadfocus.com/blog/comparisons/apm-tools/APM tools compared for 2026: trace quality is what gets you from alert to cause, and data-based pricing makes your sampling policy matter as much as features.Mon, 12 Aug 2024 11:38:00 GMThttps://loadfocus.com/blog/comparisons/core-web-vitals-tools/https://loadfocus.com/blog/comparisons/core-web-vitals-tools/Core Web Vitals monitoring tools: lab tools diagnose, field data ranks. Track your top landing pages over time, since regressions arrive with deploys.Sun, 11 Aug 2024 12:30:00 GMThttps://loadfocus.com/blog/2024/08/speed-up-wordpress-sitehttps://loadfocus.com/blog/2024/08/speed-up-wordpress-siteCaching and image optimisation deliver most of the available gain on WordPress.Sun, 11 Aug 2024 09:56:01 GMThttps://loadfocus.com/blog/2024/08/how-to-monitor-and-check-the-performance-of-an-api-deployed-on-azurehttps://loadfocus.com/blog/2024/08/how-to-monitor-and-check-the-performance-of-an-api-deployed-on-azureMonitor an API on Azure with Application Insights, Azure Monitor alerts, Standard availability tests and API Management analytics, plus a check from outside.Sat, 10 Aug 2024 07:55:08 GMThttps://loadfocus.com/blog/comparisons/graphql-clients/https://loadfocus.com/blog/comparisons/graphql-clients/Apollo Client, Relay, urql, graphql-request and AWS Amplify compared on caching, framework support and fit, plus how to load test a GraphQL API.Fri, 09 Aug 2024 15:30:43 GMThttps://loadfocus.com/blog/comparisons/load-testing-tools/https://loadfocus.com/blog/comparisons/load-testing-tools/10 load testing tools compared: LoadFocus, JMeter, k6, Gatling, Locust, BlazeMeter, LoadRunner, NeoLoad, Artillery and Loader.io, checked October 2026.Fri, 09 Aug 2024 07:20:25 GMThttps://loadfocus.com/blog/comparisons/jmeter-alternatives/https://loadfocus.com/blog/comparisons/jmeter-alternatives/JMeter alternatives for load testing in 2026: k6 and Gatling for code-first teams, hosted tools for teams without a performance engineer, and migration costs.Thu, 08 Aug 2024 11:00:30 GMThttps://loadfocus.com/blog/2024/08/how-to-set-up-domain-expiration-monitoring-a-step-by-step-tutorialhttps://loadfocus.com/blog/2024/08/how-to-set-up-domain-expiration-monitoring-a-step-by-step-tutorialDomain expiry takes sites down completely and is entirely preventable. Alert weeks ahead, not days, since transfers and payment issues take time.Wed, 07 Aug 2024 13:51:52 GMThttps://loadfocus.com/blog/tech/2024/07/how-to-optimize-interaction-to-next-paint-for-better-seohttps://loadfocus.com/blog/tech/2024/07/how-to-optimize-interaction-to-next-paint-for-better-seoINP replaced FID and measures responsiveness across the whole visit, not just the first input.Tue, 30 Jul 2024 11:04:51 GMThttps://loadfocus.com/blog/2024/07/top-10-tools-for-monitoring-oauth-client-credentials-endpointshttps://loadfocus.com/blog/2024/07/top-10-tools-for-monitoring-oauth-client-credentials-endpointsMonitor token acquisition end to end, not just that the host responds. Alert on latency as well as errors, since slow tokens time out downstream.Mon, 22 Jul 2024 11:09:05 GMThttps://loadfocus.com/blog/tech/2024/07/how-are-parameters-sent-in-an-http-post-requesthttps://loadfocus.com/blog/tech/2024/07/how-are-parameters-sent-in-an-http-post-requestHTTP POST parameters travel in the request body, and the Content-Type header (form-urlencoded, multipart or JSON) tells the server how to parse them.Fri, 19 Jul 2024 10:47:28 GMThttps://loadfocus.com/blog/2024/07/transform-your-business-with-api-monitoringhttps://loadfocus.com/blog/2024/07/transform-your-business-with-api-monitoringAPI monitoring catches failures between your services and the customers depending on them.Tue, 16 Jul 2024 11:33:35 GMThttps://loadfocus.com/blog/2024/07/from-slow-to-superfast-how-to-improve-your-website-speed-in-10-easy-stepshttps://loadfocus.com/blog/2024/07/from-slow-to-superfast-how-to-improve-your-website-speed-in-10-easy-stepsThe biggest wins are usually images, requests and caching, in that order.Mon, 15 Jul 2024 12:59:22 GMThttps://loadfocus.com/blog/2024/07/quickly-establish-a-performance-baseline-a-simple-guide-for-immediate-resultshttps://loadfocus.com/blog/2024/07/quickly-establish-a-performance-baseline-a-simple-guide-for-immediate-resultsA baseline turns future runs into comparisons instead of isolated numbers. Capture it on a stable build under representative load, then leave it alone.Tue, 09 Jul 2024 08:32:51 GMThttps://loadfocus.com/blog/2024/06/unlock-the-secret-to-effortlessly-overcoming-load-testing-obstacleshttps://loadfocus.com/blog/2024/06/unlock-the-secret-to-effortlessly-overcoming-load-testing-obstaclesThe recurring obstacles are environment parity, test data and interpreting results. Most of them are planning problems rather than tooling problems.Fri, 14 Jun 2024 13:07:59 GMThttps://loadfocus.com/blog/2024/03/generating-dynamic-ids-in-jmeter-for-enhanced-test-automationhttps://loadfocus.com/blog/2024/03/generating-dynamic-ids-in-jmeter-for-enhanced-test-automationThree ways to generate unique IDs in JMeter test plans: the __UUID function, the Counter config element and __time, with when to use each.Mon, 04 Mar 2024 13:01:40 GMThttps://loadfocus.com/blog/2024/02/understanding-github-actions-step-by-step-guide-for-beginnershttps://loadfocus.com/blog/2024/02/understanding-github-actions-step-by-step-guide-for-beginnersA workflow is triggered by an event and runs jobs made of steps, which is the whole model.Sun, 25 Feb 2024 12:40:01 GMThttps://loadfocus.com/blog/2024/02/what-is-webdriverio-unlock-the-secrets-of-automated-testinghttps://loadfocus.com/blog/2024/02/what-is-webdriverio-unlock-the-secrets-of-automated-testingWebdriverIO drives both browsers and mobile apps through the WebDriver protocol. Choose it when you need one framework across web and mobile.Thu, 22 Feb 2024 19:05:56 GMThttps://loadfocus.com/blog/2024/02/what-is-puppeteer-a-tutorial-on-how-to-use-puppeteerhttps://loadfocus.com/blog/2024/02/what-is-puppeteer-a-tutorial-on-how-to-use-puppeteerPuppeteer controls headless Chrome and suits scraping, PDFs and screenshots as much as testing.Thu, 15 Feb 2024 08:17:10 GMThttps://loadfocus.com/blog/2024/02/what-is-playwright-an-automation-framework-tutorialhttps://loadfocus.com/blog/2024/02/what-is-playwright-an-automation-framework-tutorialPlaywright drives Chromium, Firefox and WebKit through one API. Auto-waiting removes most of the sleep-based flakiness older frameworks suffer from.Wed, 14 Feb 2024 14:34:36 GMThttps://loadfocus.com/blog/2024/02/avoid-these-common-mocking-mistakes-in-api-testinghttps://loadfocus.com/blog/2024/02/avoid-these-common-mocking-mistakes-in-api-testingA mock that never fails teaches you nothing. Model timeouts and errors, not just the happy path.Wed, 07 Feb 2024 15:36:05 GMThttps://loadfocus.com/blog/2024/01/how-to-make-a-request-execute-faster-in-jmeter-a-comprehensive-guidehttps://loadfocus.com/blog/2024/01/how-to-make-a-request-execute-faster-in-jmeter-a-comprehensive-guideIs a slow JMeter request the server or the load generator? Split elapsed time into connect, latency and download, then fix keep-alive, listeners and the plan.Fri, 26 Jan 2024 13:03:18 GMThttps://loadfocus.com/blog/2023/12/top-10-lessons-learned-in-load-testing-this-yearhttps://loadfocus.com/blog/2023/12/top-10-lessons-learned-in-load-testing-this-yearMost lessons are about realism: data, think time and environment parity. A result nobody acts on is the same as not testing.Fri, 22 Dec 2023 10:40:14 GMThttps://loadfocus.com/blog/2023/11/what-is-a-qa-teamhttps://loadfocus.com/blog/2023/11/what-is-a-qa-teamQA is broader than finding bugs: it covers process, risk and release confidence.Mon, 06 Nov 2023 10:00:09 GMThttps://loadfocus.com/blog/2023/11/what-is-json-schema-a-step-by-step-guidehttps://loadfocus.com/blog/2023/11/what-is-json-schema-a-step-by-step-guideIt turns API documentation into something machine-checkable in tests. Start with required fields and types; add constraints once the basics hold.Thu, 02 Nov 2023 13:32:18 GMThttps://loadfocus.com/blog/2023/09/fix-slow-loading-pageshttps://loadfocus.com/blog/2023/09/fix-slow-loading-pagesMeasure before optimising. Most slow pages have one dominant cause, not six small ones.Sun, 03 Sep 2023 18:06:13 GMThttps://loadfocus.com/blog/2023/08/contextual-documentation-revolutionizing-user-onboarding-with-loadfocushttps://loadfocus.com/blog/2023/08/contextual-documentation-revolutionizing-user-onboarding-with-loadfocusDive into LoadFocus's enhanced user experience with contextual documentation. Streamline your onboarding and understand metrics with in-app guidance.Tue, 22 Aug 2023 14:58:11 GMThttps://loadfocus.com/blog/2023/08/avoid-the-crash-proven-strategies-for-load-testing-azure-web-appshttps://loadfocus.com/blog/2023/08/avoid-the-crash-proven-strategies-for-load-testing-azure-web-appsLoad test an Azure Web App without crashing it. Autoscaling reacts after load arrives, so test the scale-out itself, not the steady state.Thu, 10 Aug 2023 11:23:46 GMThttps://loadfocus.com/blog/2023/07/how-to-load-test-your-php-websitehttps://loadfocus.com/blog/2023/07/how-to-load-test-your-php-websiteLoad test a PHP site with Apache JMeter. PHP scales by process, so the worker pool usually caps you long before the code itself does.Wed, 26 Jul 2023 12:31:31 GMThttps://loadfocus.com/blog/2023/07/how-frontend-performance-testing-can-catapult-your-business-to-the-tophttps://loadfocus.com/blog/2023/07/how-frontend-performance-testing-can-catapult-your-business-to-the-topBackend metrics can look healthy while the page users see is still slow. Measure on a real device profile. Desktop numbers flatter almost every site.Tue, 18 Jul 2023 14:25:44 GMThttps://loadfocus.com/blog/2023/07/googles-best-kept-secret-how-page-speed-insights-can-skyrocket-your-rankingshttps://loadfocus.com/blog/2023/07/googles-best-kept-secret-how-page-speed-insights-can-skyrocket-your-rankingsPageSpeed Insights reports both lab and field data, and only the field data affects ranking.Mon, 17 Jul 2023 09:41:32 GMThttps://loadfocus.com/blog/2023/05/ci-cd-best-practiceshttps://loadfocus.com/blog/2023/05/ci-cd-best-practicesKeep the pipeline fast. A suite people skip because it is slow provides no safety at all.Fri, 05 May 2023 06:57:04 GMThttps://loadfocus.com/blog/2023/04/flaky-tests-in-software-testinghttps://loadfocus.com/blog/2023/04/flaky-tests-in-software-testingA flaky test is worse than no test, because it trains the team to ignore red builds.Wed, 19 Apr 2023 14:31:22 GMThttps://loadfocus.com/blog/2023/04/customizable-widgets-on-loadfocus-dashboardhttps://loadfocus.com/blog/2023/04/customizable-widgets-on-loadfocus-dashboardA dashboard is only useful if it shows the few numbers you act on. Arrange widgets around a question you ask often rather than around what is available.Mon, 10 Apr 2023 16:03:29 GMThttps://loadfocus.com/blog/2022/12/i-want-to-load-test-my-new-website-where-do-i-beginhttps://loadfocus.com/blog/2022/12/i-want-to-load-test-my-new-website-where-do-i-beginStart with the objective: a target user count and an acceptable response time. Run a small test first to validate the setup, then scale up.Thu, 08 Dec 2022 11:56:05 GMThttps://loadfocus.com/blog/2022/11/improve-your-websites-seo-for-better-search-rankinghttps://loadfocus.com/blog/2022/11/improve-your-websites-seo-for-better-search-rankingContent that answers a real query outranks technically perfect pages about nothing. Site speed and crawlability are prerequisites rather than tactics.Wed, 16 Nov 2022 16:44:37 GMThttps://loadfocus.com/blog/2022/03/actively-measure-the-right-key-metrics-during-performance-testinghttps://loadfocus.com/blog/2022/03/actively-measure-the-right-key-metrics-during-performance-testingThe performance testing metrics worth tracking: response time percentiles, throughput, error rate, concurrency, and CPU, memory, disk, network and DB load.Mon, 28 Mar 2022 05:56:51 GMThttps://loadfocus.com/blog/2022/02/some-websites-are-just-too-slowhttps://loadfocus.com/blog/2022/02/some-websites-are-just-too-slowUsers judge speed in the first couple of seconds, and most sites lose them there. Measure before assuming; the obvious culprit is often not the cause.Mon, 21 Feb 2022 12:07:52 GMThttps://loadfocus.com/blog/2022/01/how-to-test-oauth-secured-apis-apps-using-jmeterhttps://loadfocus.com/blog/2022/01/how-to-test-oauth-secured-apis-apps-using-jmeterTest OAuth-secured APIs in JMeter: fetch the token once, extract it with a JSON extractor, reuse it in a header manager, keep it out of timed samples.Mon, 03 Jan 2022 08:29:45 GMThttps://loadfocus.com/blog/2021/12/why-you-should-start-improving-the-images-on-your-websitehttps://loadfocus.com/blog/2021/12/why-you-should-start-improving-the-images-on-your-websiteImages are usually the largest thing on a page and the easiest to fix. Modern formats and correct dimensions cut weight without visible quality loss.Mon, 13 Dec 2021 13:07:28 GMThttps://loadfocus.com/blog/2021/12/too-many-cloud-testing-tools-are-distracting-and-addictive-heres-how-to-fix-ithttps://loadfocus.com/blog/2021/12/too-many-cloud-testing-tools-are-distracting-and-addictive-heres-how-to-fix-itTool sprawl fragments results so no single view is trustworthy. Consolidate on what integrates with your pipeline rather than what demos best.Mon, 06 Dec 2021 22:48:00 GMThttps://loadfocus.com/blog/2021/12/how-to-use-csv-data-set-to-configure-jmeter-testshttps://loadfocus.com/blog/2021/12/how-to-use-csv-data-set-to-configure-jmeter-testsSet up JMeter's CSV Data Set Config step by step: filename, variable names, delimiter, recycle and stop thread on EOF, and sharing mode, with an example.Wed, 01 Dec 2021 14:49:23 GMThttps://loadfocus.com/blog/2021/10/why-are-percentiles-more-useful-than-averages-in-performance-testinghttps://loadfocus.com/blog/2021/10/why-are-percentiles-more-useful-than-averages-in-performance-testingThe 90th percentile is the value 90% of measurements stay at or under. How to calculate p90, p95 and p99, with a worked example, and why they beat the average.Wed, 20 Oct 2021 08:59:53 GMThttps://loadfocus.com/blog/2021/09/how-to-monitor-core-web-vitals-for-your-website-with-alerts-and-reportshttps://loadfocus.com/blog/2021/09/how-to-monitor-core-web-vitals-for-your-website-with-alerts-and-reportsScheduled checks turn Core Web Vitals from an occasional audit into a trend you can act on.Tue, 28 Sep 2021 11:47:47 GMThttps://loadfocus.com/blog/2021/07/how-to-monitor-the-seo-of-your-websitehttps://loadfocus.com/blog/2021/07/how-to-monitor-the-seo-of-your-websiteSEO monitoring catches silent breakage: a noindex shipped by accident, or a redirect chain.Tue, 13 Jul 2021 13:52:37 GMThttps://loadfocus.com/blog/2021/06/how-to-create-an-alias-to-easily-start-jmeter-on-your-local-machinehttps://loadfocus.com/blog/2021/06/how-to-create-an-alias-to-easily-start-jmeter-on-your-local-machineCreate a shell alias that starts Apache JMeter from any Mac terminal: zsh and bash profile files, Homebrew and archive paths, source, and a PATH option.Tue, 01 Jun 2021 07:44:39 GMThttps://loadfocus.com/blog/2021/05/so-you-want-to-become-a-software-testing-experthttps://loadfocus.com/blog/2021/05/so-you-want-to-become-a-software-testing-expertDepth in one area beats shallow familiarity with every tool. Automation is a skill within testing, not a replacement for knowing what to test.Wed, 19 May 2021 06:33:53 GMThttps://loadfocus.com/blog/2021/04/what-is-hits-per-second-in-performance-testinghttps://loadfocus.com/blog/2021/04/what-is-hits-per-second-in-performance-testingHits per second counts every request including assets, so it exceeds page views substantially. It shows server workload rather than user activity.Mon, 26 Apr 2021 15:32:00 GMThttps://loadfocus.com/blog/2021/03/how-to-create-multilingual-reports-for-performance-testshttps://loadfocus.com/blog/2021/03/how-to-create-multilingual-reports-for-performance-testsSet the language per report rather than per account when teams are mixed. The numbers are the same either way, so this is about adoption, not accuracy.Thu, 11 Mar 2021 09:06:57 GMThttps://loadfocus.com/blog/2021/02/how-to-load-test-restful-apis-with-loadfocushttps://loadfocus.com/blog/2021/02/how-to-load-test-restful-apis-with-loadfocusLoad test a REST API with LoadFocus: set virtual users and ramp-up, add requests with headers and a body, read p95 and errors, and set pass/fail thresholds.Mon, 15 Feb 2021 08:54:23 GMThttps://loadfocus.com/blog/2021/02/understanding-standard-deviation-in-performance-testinghttps://loadfocus.com/blog/2021/02/understanding-standard-deviation-in-performance-testingStandard deviation in performance testing: how far response times spread around the mean, how to calculate it, what counts as high and why to pair it with p95.Fri, 05 Feb 2021 12:03:42 GMThttps://loadfocus.com/blog/2021/01/how-to-improve-your-wordpress-performance-scorehttps://loadfocus.com/blog/2021/01/how-to-improve-your-wordpress-performance-scoreCaching plus image optimisation covers the majority of the available gain. Audit plugins periodically. Each one adds queries and assets to every page.Wed, 06 Jan 2021 08:05:04 GMThttps://loadfocus.com/blog/2020/12/which-is-the-execution-order-of-elements-in-apache-jmeterhttps://loadfocus.com/blog/2020/12/which-is-the-execution-order-of-elements-in-apache-jmeterJMeter runs elements in a fixed order: config, pre-processors, timers, samplers, post-processors, assertions, listeners. The rules that trip people up.Fri, 04 Dec 2020 16:13:58 GMThttps://loadfocus.com/blog/2020/11/agile-software-release-checklist-manifestohttps://loadfocus.com/blog/2020/11/agile-software-release-checklist-manifestoReleasing often only works if the pre-release checks are automated and identical every time.Fri, 27 Nov 2020 14:27:06 GMThttps://loadfocus.com/blog/2020/11/record-jmeter-tests-chrome-extensionhttps://loadfocus.com/blog/2020/11/record-jmeter-tests-chrome-extensionRecord a JMeter test in Chrome with the LoadFocus extension, clean up the .jmx file and run it in the cloud. Covers JMeter's own recorder as an alternative.Tue, 17 Nov 2020 09:46:47 GMThttps://loadfocus.com/blog/2020/10/which-language-is-used-in-jmeterhttps://loadfocus.com/blog/2020/10/which-language-is-used-in-jmeterJMeter is written in Java and needs a JRE. Test plans are XML; in-test scripting uses Groovy (JSR223), Beanshell or JavaScript. What that means for you.Wed, 07 Oct 2020 13:11:14 GMThttps://loadfocus.com/blog/2020/10/how-does-apache-jmeter-workhttps://loadfocus.com/blog/2020/10/how-does-apache-jmeter-workHow Apache JMeter works: threads as virtual users, samplers that send real requests, what elapsed time and latency measure, and where results go. Run on 5.6.3.Fri, 02 Oct 2020 08:38:18 GMThttps://loadfocus.com/blog/2020/09/where-to-find-the-configuration-files-for-jmeter-when-installed-with-homebrewhttps://loadfocus.com/blog/2020/09/where-to-find-the-configuration-files-for-jmeter-when-installed-with-homebrewHomebrew JMeter config files live in $(brew --prefix jmeter)/libexec/bin. Find jmeter.properties and user.properties on Apple Silicon and Intel Macs.Sat, 12 Sep 2020 09:59:12 GMThttps://loadfocus.com/blog/2020/09/how-to-increase-heap-size-in-jmeterhttps://loadfocus.com/blog/2020/09/how-to-increase-heap-size-in-jmeterJMeter starts with a 1 GB heap. Raise it with HEAP in bin/setenv.sh or setenv.bat, confirm the new size in jmeter.log, and know when more heap will not help.Thu, 10 Sep 2020 09:32:54 GMThttps://loadfocus.com/blog/2020/09/how-to-install-extra-plugins-in-jmeter-using-the-plugins-managerhttps://loadfocus.com/blog/2020/09/how-to-install-extra-plugins-in-jmeter-using-the-plugins-managerThe Plugins Manager handles dependencies, which manual jar copying does not. Install it once, then add and update plugins from inside JMeter.Tue, 08 Sep 2020 08:23:14 GMThttps://loadfocus.com/blog/2020/09/why-does-installing-jmeter-with-homebrew-gives-invalid-option-with-pluginshttps://loadfocus.com/blog/2020/09/why-does-installing-jmeter-with-homebrew-gives-invalid-option-with-pluginsbrew install jmeter --with-plugins fails because Homebrew 2.0 removed formula options. Plain brew install jmeter already ships the JMeter Plugins Manager.Sun, 06 Sep 2020 10:59:22 GMThttps://loadfocus.com/blog/2020/09/how-to-install-jmeter-on-machttps://loadfocus.com/blog/2020/09/how-to-install-jmeter-on-macDownload the JMeter 5.6.3 archive for Mac from Apache or install it with brew install jmeter, then open it from Terminal. Covers Java and Apple Silicon paths.Wed, 02 Sep 2020 09:22:35 GMThttps://loadfocus.com/blog/2020/04/cypress-the-web-testing-framework-of-the-momenthttps://loadfocus.com/blog/2020/04/cypress-the-web-testing-framework-of-the-momentCypress runs in the browser alongside your app, which makes debugging far more direct.Thu, 02 Apr 2020 13:53:38 GMThttps://loadfocus.com/blog/2020/01/using-selenium-ide-record-and-playback-toolhttps://loadfocus.com/blog/2020/01/using-selenium-ide-record-and-playback-toolSelenium IDE is the fastest way to capture a journey, and the worst way to maintain one. Use it to draft a test, then export and clean up the locators.Tue, 14 Jan 2020 12:15:55 GMThttps://loadfocus.com/blog/2019/11/using-testcafe-for-end-to-end-testinghttps://loadfocus.com/blog/2019/11/using-testcafe-for-end-to-end-testingTestCafe runs without WebDriver, which removes most of the setup friction. End to end tests are expensive, so keep them to the journeys that matter.Tue, 19 Nov 2019 11:57:05 GMThttps://loadfocus.com/blog/2019/03/chrome-extension-for-google-lighthouse-as-a-servicehttps://loadfocus.com/blog/2019/03/chrome-extension-for-google-lighthouse-as-a-serviceRunning Lighthouse from an extension gives you an audit without leaving the page you are testing.Thu, 28 Mar 2019 15:01:57 GMThttps://loadfocus.com/blog/2019/02/what-is-first-meaningful-paint-fmphttps://loadfocus.com/blog/2019/02/what-is-first-meaningful-paint-fmpFMP tried to capture when the main content appeared, rather than the first pixel. Use LCP for anything current; FMP appears mainly in older reports.Wed, 06 Feb 2019 13:17:27 GMThttps://loadfocus.com/blog/2018/12/what-is-disaster-recovery-testing-in-software-testinghttps://loadfocus.com/blog/2018/12/what-is-disaster-recovery-testing-in-software-testingA recovery plan that has never been executed is an assumption, not a plan. Test the restore, not just the backup; backups fail silently at restore time.Mon, 03 Dec 2018 14:17:58 GMThttps://loadfocus.com/blog/2018/11/what-is-stress-testing-in-software-testinghttps://loadfocus.com/blog/2018/11/what-is-stress-testing-in-software-testingStress testing pushes past expected load to find the breaking point and the failure mode. How the system recovers matters as much as where it broke.Thu, 29 Nov 2018 14:28:49 GMThttps://loadfocus.com/blog/tech/2018/08/end-to-end-testing-of-asos-com-using-testcafe-in-under-30-minuteshttps://loadfocus.com/blog/tech/2018/08/end-to-end-testing-of-asos-com-using-testcafe-in-under-30-minutesTestCafe needs no WebDriver, which is why a working suite is possible in half an hour.Thu, 30 Aug 2018 10:49:42 GMThttps://loadfocus.com/blog/tech/2018/07/best-practices-for-implementing-e2e-end-to-end-ui-testshttps://loadfocus.com/blog/tech/2018/07/best-practices-for-implementing-e2e-end-to-end-ui-testsE2E tests earn their cost only on the journeys that make money; everything else belongs lower in the pyramid.Mon, 30 Jul 2018 11:04:26 GMThttps://loadfocus.com/blog/tech/2018/04/building-your-in-house-device-farm-on-mac-os-using-openstf-for-android-testinghttps://loadfocus.com/blog/tech/2018/04/building-your-in-house-device-farm-on-mac-os-using-openstf-for-android-testingOpenSTF gives you remote access to real Android devices, which emulators cannot fully replace.Tue, 24 Apr 2018 15:43:08 GMThttps://loadfocus.com/blog/2018/04/how-to-design-your-load-testing-scenarioshttps://loadfocus.com/blog/2018/04/how-to-design-your-load-testing-scenariosHow to design load testing scenarios: set pass/fail goals, build a workload model from real traffic, add think time and test data, then choose the load profile.Thu, 19 Apr 2018 11:01:12 GMThttps://loadfocus.com/blog/tech/2018/03/how-to-click-on-element-with-puppeteer-and-chromehttps://loadfocus.com/blog/tech/2018/03/how-to-click-on-element-with-puppeteer-and-chromePuppeteer's page.click does not wait for the selector and throws if it is missing; wait with waitForSelector or use a locator that waits for a visible element.Fri, 09 Mar 2018 14:10:19 GMThttps://loadfocus.com/blog/tech/2018/02/mocking-apis-using-wiremock-for-testing-negative-cases-when-it-is-not-possible-to-change-the-api-behaviourhttps://loadfocus.com/blog/tech/2018/02/mocking-apis-using-wiremock-for-testing-negative-cases-when-it-is-not-possible-to-change-the-api-behaviourWireMock lets you produce failures a real API will not give you on demand: timeouts, 500s, malformed bodies.Tue, 27 Feb 2018 11:41:49 GMThttps://loadfocus.com/blog/tech/2018/02/structuring-integration-tests-using-junit-categories-by-features-api-or-type-of-testshttps://loadfocus.com/blog/tech/2018/02/structuring-integration-tests-using-junit-categories-by-features-api-or-type-of-testsCategories let one suite be sliced by speed or area, so CI can run the fast set per commit.Fri, 23 Feb 2018 11:51:59 GMThttps://loadfocus.com/blog/2018/02/what-is-a-staging-environment-in-software-developmenthttps://loadfocus.com/blog/2018/02/what-is-a-staging-environment-in-software-developmentThe closer the parity, especially in data and scale, the more useful it is. A staging environment that drifts from production gives false confidence.Thu, 22 Feb 2018 11:05:52 GMThttps://loadfocus.com/blog/2018/02/how-to-visually-compare-staging-vs-production-websites-automaticallyhttps://loadfocus.com/blog/2018/02/how-to-visually-compare-staging-vs-production-websites-automaticallyCompare the same viewport and state, or the diff is dominated by noise. Review differences rather than gating on pixel equality, which fails constantly.Tue, 13 Feb 2018 14:55:28 GMThttps://loadfocus.com/blog/2018/02/visual-ui-regression-testing-with-jest-puppeteer-and-headless-chromehttps://loadfocus.com/blog/2018/02/visual-ui-regression-testing-with-jest-puppeteer-and-headless-chromeImage comparison catches visual breakage that assertions never check for. Run in a consistent environment; a different OS produces different pixels.Tue, 06 Feb 2018 15:10:19 GMThttps://loadfocus.com/blog/tech/2017/12/how-to-click-a-link-by-text-in-selenium-webdriver-javahttps://loadfocus.com/blog/tech/2017/12/how-to-click-a-link-by-text-in-selenium-webdriver-javalinkText matches the full visible text; partialLinkText matches a substring.Tue, 19 Dec 2017 11:38:12 GMThttps://loadfocus.com/blog/2017/12/how-to-load-test-your-cryptocurrency-exchange-servicehttps://loadfocus.com/blog/2017/12/how-to-load-test-your-cryptocurrency-exchange-serviceExchanges fail at the order book and matching engine, not at the marketing pages.Sun, 17 Dec 2017 13:36:53 GMThttps://loadfocus.com/blog/tech/2017/12/how-to-take-screenshots-with-puppeteer-using-headless-chrome-browserhttps://loadfocus.com/blog/tech/2017/12/how-to-take-screenshots-with-puppeteer-using-headless-chrome-browserPuppeteer captures viewport, full-page or single-element screenshots.Thu, 07 Dec 2017 20:01:37 GMThttps://loadfocus.com/blog/2017/05/is-my-email-campaign-going-to-bring-my-website-downhttps://loadfocus.com/blog/2017/05/is-my-email-campaign-going-to-bring-my-website-downA campaign delivers its traffic in minutes, which is a spike rather than a load curve.Fri, 05 May 2017 12:14:03 GMThttps://loadfocus.com/blog/2017/04/screenshot-comparison-toolshttps://loadfocus.com/blog/2017/04/screenshot-comparison-toolsPixel comparison catches visual regressions that functional tests never assert on. Set a tolerance, or antialiasing and fonts will fail every run.Thu, 27 Apr 2017 13:54:25 GMThttps://loadfocus.com/blog/2017/04/how-to-make-a-recording-of-your-native-application-for-demo-or-debugging-purposeshttps://loadfocus.com/blog/2017/04/how-to-make-a-recording-of-your-native-application-for-demo-or-debugging-purposesA screen recording captures the exact sequence that reproduces a bug, which a description rarely does.Wed, 12 Apr 2017 10:23:42 GMThttps://loadfocus.com/blog/tech/2017/03/how-to-debug-es6-in-webstorm-with-babelhttps://loadfocus.com/blog/tech/2017/03/how-to-debug-es6-in-webstorm-with-babelDebugging transpiled code needs source maps, or breakpoints land on the wrong lines.Thu, 30 Mar 2017 09:37:05 GMThttps://loadfocus.com/blog/2017/03/debugging-the-traffic-from-a-native-iphone-applicationhttps://loadfocus.com/blog/2017/03/debugging-the-traffic-from-a-native-iphone-applicationA proxy between the device and the network is the only reliable way to see native app traffic.Mon, 20 Mar 2017 14:29:48 GMThttps://loadfocus.com/blog/2017/03/how-to-use-apache-jmeters-webdriver-sampler-to-load-test-the-ui-of-an-applicationhttps://loadfocus.com/blog/2017/03/how-to-use-apache-jmeters-webdriver-sampler-to-load-test-the-ui-of-an-applicationThe WebDriver Sampler measures real browser rendering, which HTTP samplers cannot see. Use it to measure front-end timing, not to generate volume.Fri, 10 Mar 2017 14:54:49 GMThttps://loadfocus.com/blog/tech/2017/03/how-to-use-the-dataprovider-in-testng-with-a-java-examplehttps://loadfocus.com/blog/tech/2017/03/how-to-use-the-dataprovider-in-testng-with-a-java-exampleA DataProvider feeds many input sets into one test method, which keeps cases out of the code.Fri, 03 Mar 2017 13:20:15 GMThttps://loadfocus.com/blog/2017/02/how-to-save-apache-jmeter-results-to-a-csv-file-or-xml-filehttps://loadfocus.com/blog/2017/02/how-to-save-apache-jmeter-results-to-a-csv-file-or-xml-fileTwo ways to save Apache JMeter results: the -l flag with jmeter.save.saveservice properties for CSV, or XML for the full sample detail. With examples.Tue, 28 Feb 2017 15:02:32 GMThttps://loadfocus.com/blog/2017/02/how-to-open-a-new-tab-using-selenium-webdriver-with-javahttps://loadfocus.com/blog/2017/02/how-to-open-a-new-tab-using-selenium-webdriver-with-javaOpen a new tab in Selenium WebDriver with Java: Selenium 4's switchTo().newWindow(WindowType.TAB), Ctrl+click on a link, and switching between tabs by handle.Tue, 14 Feb 2017 14:00:51 GMThttps://loadfocus.com/blog/2016/12/how-to-send-an-android-application-to-background-and-reopen-ithttps://loadfocus.com/blog/2016/12/how-to-send-an-android-application-to-background-and-reopen-itBackgrounding and resuming is where state bugs surface, so it belongs in the test suite. Verify state after resume, not just that the app reopened.Fri, 02 Dec 2016 15:33:52 GMThttps://loadfocus.com/blog/2016/11/how-to-use-explicit-and-implicit-waits-in-selenium-webdriver-with-javahttps://loadfocus.com/blog/2016/11/how-to-use-explicit-and-implicit-waits-in-selenium-webdriver-with-javaExplicit waits target a condition; implicit waits apply a blanket timeout to every lookup.Mon, 07 Nov 2016 17:32:58 GMThttps://loadfocus.com/blog/2016/10/how-to-find-by-xpath-text-that-contains-apostrophe-single-quote-in-selenium-webdriverhttps://loadfocus.com/blog/2016/10/how-to-find-by-xpath-text-that-contains-apostrophe-single-quote-in-selenium-webdriverWrap the literal in double quotes instead, which is the simplest fix. Use concat() when the text contains both quote characters.Thu, 13 Oct 2016 13:22:13 GMThttps://loadfocus.com/blog/2016/10/find-all-the-links-on-a-webpage-with-selenium-webdriver-in-javahttps://loadfocus.com/blog/2016/10/find-all-the-links-on-a-webpage-with-selenium-webdriver-in-javaFind all links on a page with Selenium WebDriver in Java: findElements(By.tagName("a")), filtering hrefs, checking status codes and avoiding stale elements.Mon, 03 Oct 2016 13:07:14 GMThttps://loadfocus.com/blog/2016/09/why-do-i-get-500-internal-server-errors-when-doing-get-or-post-requestshttps://loadfocus.com/blog/2016/09/why-do-i-get-500-internal-server-errors-when-doing-get-or-post-requestsWhy a GET or POST request returns 500 Internal Server Error: a body the server cannot parse, missing headers or cookies, exhausted pools, and how to debug it.Fri, 30 Sep 2016 10:52:18 GMThttps://loadfocus.com/blog/2016/09/how-to-mouseover-hover-a-webelement-using-selenium-webdriverhttps://loadfocus.com/blog/2016/09/how-to-mouseover-hover-a-webelement-using-selenium-webdriverHover needs the Actions class; a plain click will not trigger CSS or JS hover states.Fri, 23 Sep 2016 09:17:49 GMThttps://loadfocus.com/blog/2016/07/which-is-the-best-and-fastest-way-to-find-elements-using-selenium-webdriverhttps://loadfocus.com/blog/2016/07/which-is-the-best-and-fastest-way-to-find-elements-using-selenium-webdriverWhich Selenium locator is fastest? A measured test of By.id, name, CSS and XPath in Selenium 4: XPath costs a few ms more, and stability matters more.Mon, 18 Jul 2016 14:39:15 GMThttps://loadfocus.com/blog/2016/06/how-to-select-a-dropdown-in-selenium-webdriver-using-javahttps://loadfocus.com/blog/2016/06/how-to-select-a-dropdown-in-selenium-webdriver-using-javaUse the Select class for real select elements, and normal clicks for custom widgets.Mon, 13 Jun 2016 13:56:38 GMThttps://loadfocus.com/blog/tech/2016/05/how-to-use-user-defined-variables-in-apache-jmeterhttps://loadfocus.com/blog/tech/2016/05/how-to-use-user-defined-variables-in-apache-jmeterHow to add User Defined Variables in Apache JMeter, reference them with ${name}, override them from the CLI with -J, and keep environments in one place.Sat, 14 May 2016 13:49:48 GMThttps://loadfocus.com/blog/2016/05/how-to-start-apache-jmeter-in-non-graphical-non-gui-modehttps://loadfocus.com/blog/2016/05/how-to-start-apache-jmeter-in-non-graphical-non-gui-modeStart Apache JMeter from the command line with -n -t -l -e -o, why GUI mode skews results, and how to run the same JMX at scale in the cloud.Tue, 10 May 2016 11:27:34 GMThttps://loadfocus.com/blog/tech/2016/05/how-to-scroll-web-page-up-or-down-using-selenium-webdriverhttps://loadfocus.com/blog/tech/2016/05/how-to-scroll-web-page-up-or-down-using-selenium-webdriverSelenium 4.2+ scrolls natively with wheel actions (scrollToElement, scrollByAmount); the JavaScript executor scrollBy and scrollIntoView work in every version.Sun, 01 May 2016 19:44:08 GMThttps://loadfocus.com/blog/2016/04/enable-gzip-compression-on-nginxhttps://loadfocus.com/blog/2016/04/enable-gzip-compression-on-nginxgzip on NGINX is a few lines of config and usually the cheapest bandwidth win available.Mon, 25 Apr 2016 08:54:25 GMThttps://loadfocus.com/blog/2016/04/how-to-use-apache-jmeters-xpath-extractorhttps://loadfocus.com/blog/2016/04/how-to-use-apache-jmeters-xpath-extractorUse JMeter's XPath2 Extractor to pull values from XML and SOAP responses, map namespaces, and see why XPath on HTML returns your default value. Tested on 5.6.3.Wed, 20 Apr 2016 10:37:44 GMThttps://loadfocus.com/blog/2016/04/how-to-use-assertions-in-apache-jmeter-testshttps://loadfocus.com/blog/2016/04/how-to-use-assertions-in-apache-jmeter-testsAssert on content as well as status, since a wrong body is still a failure. Keep assertions cheap. Heavy ones distort the timings you are measuring.Mon, 18 Apr 2016 10:38:10 GMThttps://loadfocus.com/blog/2016/04/how-to-use-apache-jmeter-to-load-test-a-web-serverhttps://loadfocus.com/blog/2016/04/how-to-use-apache-jmeter-to-load-test-a-web-serverJMeter load testing step by step: install JMeter 5.6.3, build a test plan, run it in CLI mode, read the HTML report and scale past one machine to the cloud.Wed, 13 Apr 2016 11:29:06 GMThttps://loadfocus.com/blog/2015/08/top-10-performance-testing-tips-and-trickshttps://loadfocus.com/blog/2015/08/top-10-performance-testing-tips-and-tricksDecide what you are measuring and why before configuring anything. Choose the metrics up front, or you will report whatever looks best afterwards.Thu, 20 Aug 2015 23:25:13 GMThttps://loadfocus.com/blog/tech/2015/07/how-to-find-the-xpath-of-your-selenium-webdriver-test-using-chrome-browserhttps://loadfocus.com/blog/tech/2015/07/how-to-find-the-xpath-of-your-selenium-webdriver-test-using-chrome-browserChrome DevTools can copy an XPath, but the generated one is usually position-based and brittle.Sat, 25 Jul 2015 11:57:33 GMThttps://loadfocus.com/blog/tech/2015/07/how-to-get-all-the-options-in-a-select-tag-using-selenium-webdriverhttps://loadfocus.com/blog/tech/2015/07/how-to-get-all-the-options-in-a-select-tag-using-selenium-webdriverThe Select class exposes getOptions() for real select elements. Assert on the option text or value, not the count alone, which passes on the wrong list.Tue, 21 Jul 2015 11:16:16 GMThttps://loadfocus.com/blog/tech/2015/07/using-a-csv-file-for-login-credentials-and-extracting-the-token-from-the-response-when-running-jmeter-testshttps://loadfocus.com/blog/tech/2015/07/using-a-csv-file-for-login-credentials-and-extracting-the-token-from-the-response-when-running-jmeter-testsLog each JMeter virtual user in with credentials from a CSV file, extract the token from the login response with a JSON Extractor and send it on later requests.Fri, 17 Jul 2015 10:50:43 GMThttps://loadfocus.com/blog/tech/2015/07/how-to-measure-cpu-and-memory-while-running-a-load-testhttps://loadfocus.com/blog/tech/2015/07/how-to-measure-cpu-and-memory-while-running-a-load-testResponse times alone cannot tell you whether the server is saturated or merely waiting.Mon, 13 Jul 2015 09:09:36 GMThttps://loadfocus.com/blog/tech/2015/07/how-to-install-jmeterplugins-extras-and-jmeterplugins-extraslibshttps://loadfocus.com/blog/tech/2015/07/how-to-install-jmeterplugins-extras-and-jmeterplugins-extraslibsJMeterPlugins-Extras and ExtrasLibs stopped at 1.4.0 in 2016. Get their graphs, samplers and JSON tools through the JMeter Plugins Manager, plugin by plugin.Fri, 10 Jul 2015 10:38:36 GMThttps://loadfocus.com/blog/tech/2015/06/how-to-clear-local-storage-using-selenium-webdriverhttps://loadfocus.com/blog/tech/2015/06/how-to-clear-local-storage-using-selenium-webdriverClearing cookies does not clear local storage, so state survives between tests. Execute localStorage.clear() through the driver's JavaScript executor.Tue, 30 Jun 2015 12:36:01 GMThttps://loadfocus.com/blog/2014/06/how-to-take-snapshots-of-the-browser-using-selenium-webdriverhttps://loadfocus.com/blog/2014/06/how-to-take-snapshots-of-the-browser-using-selenium-webdriverScreenshots on failure turn an unhelpful stack trace into something you can diagnose. Name files by test and timestamp or you cannot match them to runs.Wed, 04 Jun 2014 09:11:13 GMThttps://loadfocus.com/blog/2014/06/how-to-pass-traffic-through-a-proxy-with-selenium-webdriverhttps://loadfocus.com/blog/2014/06/how-to-pass-traffic-through-a-proxy-with-selenium-webdriverA proxy lets you inspect, record or modify the traffic a browser test generates. HTTPS needs the proxy certificate trusted or every request fails.Mon, 02 Jun 2014 13:37:48 GMThttps://loadfocus.com/blog/2013/11/run-jmeter-distributed-test-in-the-cloudhttps://loadfocus.com/blog/2013/11/run-jmeter-distributed-test-in-the-cloudJMeter distributed testing step by step: start jmeter-server on each worker, set up the RMI keystore and ports, run with -R and size threads per worker.Wed, 13 Nov 2013 12:02:57 GMThttps://loadfocus.com/blog/2013/10/ui-and-performance-testing-for-ui-heavy-based-web-applications-solutionshttps://loadfocus.com/blog/2013/10/ui-and-performance-testing-for-ui-heavy-based-web-applications-solutionsCombine a large HTTP load with a small number of real browser sessions. Watch client-side metrics, since the server can be fast while the page is not.Sat, 05 Oct 2013 21:31:35 GMThttps://loadfocus.com/blog/2013/09/how-to-debug-mobile-html5-and-native-applicationshttps://loadfocus.com/blog/2013/09/how-to-debug-mobile-html5-and-native-applicationsHTML5 apps can be debugged with remote browser tooling; native apps need a proxy or device logs.Mon, 16 Sep 2013 09:56:32 GMThttps://loadfocus.com/blog/2013/09/how-to-write-a-good-test-planhttps://loadfocus.com/blog/2013/09/how-to-write-a-good-test-planA test plan is about scope and risk: what you will not test matters as much as what you will.Fri, 13 Sep 2013 19:51:18 GMThttps://loadfocus.com/blog/2013/09/how-to-locate-web-elements-with-selenium-webdriverhttps://loadfocus.com/blog/2013/09/how-to-locate-web-elements-with-selenium-webdriverLocate web elements in Selenium 4 with the Java By class: id, name, CSS, XPath and relative locators, with tested code and what selenium.dev recommends.Thu, 05 Sep 2013 22:56:40 GMThttps://loadfocus.com/blog/2013/08/how-many-threads-or-concurrent-users-can-i-run-in-parallel-with-apache-jmeter-from-my-machinehttps://loadfocus.com/blog/2013/08/how-many-threads-or-concurrent-users-can-i-run-in-parallel-with-apache-jmeter-from-my-machineJMeter has no fixed thread limit: one machine's ceiling depends on CPU, heap and think time. How to measure yours, what breaks first and when to distribute.Sat, 17 Aug 2013 14:11:09 GMThttps://loadfocus.com/blog/2013/07/apache-jmeter-performance-test-introductionhttps://loadfocus.com/blog/2013/07/apache-jmeter-performance-test-introductionJMeter for beginners: the six stages to learn in order, from test plan basics and a first request with an assertion to CLI runs, results and scaling out.Tue, 09 Jul 2013 08:50:05 GMThttps://loadfocus.com/blog/2013/07/what-is-throughput-in-performance-testinghttps://loadfocus.com/blog/2013/07/what-is-throughput-in-performance-testingThroughput is work completed per unit of time: requests per second = completed requests / test seconds. Units, formula and how to measure it in JMeter and k6.Thu, 04 Jul 2013 08:19:46 GMThttps://loadfocus.com/blog/2013/07/what-is-response-time-in-performance-testinghttps://loadfocus.com/blog/2013/07/what-is-response-time-in-performance-testingResponse time testing explained: what response time is, how to measure it, why p95 beats the average, and what a good response time is.Wed, 03 Jul 2013 08:20:25 GMT