Load testing for web applications

Built for developers.

What is load testing for a web application?

Load testing sends concurrent simulated traffic at your application and measures how response times, error rates and throughput change as that concurrency rises. It answers how many users the system serves before it degrades, and what gives way first.

How many virtual users should I test with?

Start from your real peak concurrency rather than a round number, then push past it. The useful test is the one that finds where the system stops coping, so raise the load until something degrades.

Can I run a load test without writing a script?

Yes. Import a cURL command, HAR file, Postman collection or OpenAPI spec and LoadFocus builds the test from it. You can edit the generated test before you run it.

Where do the load generators run?

From 25 cloud regions, and a single test can run from several regions at once so you see what each region actually experiences.

How do I tell a real regression from noise?

Compare against a stored baseline run rather than a remembered number, and read percentiles rather than averages. An average hides the slow tail, which is exactly the part users notice.

Is there a free plan?

Yes. You can run a load test for free without a credit card. The pricing page lists what each plan includes.