Load testing should be an easy, on going task that your team should focus in terms of constantly improving the quality of your application.
LoadFocus is an easy to use, in browser, cloud load testing application which allows to simulate load tests from the browser to your application with up to 600k connections per test. This should give you an overall idea of how your application behaves in terms of high load.
Make your you start your load test with a lower number of clients and check the live results, in order to find potential bottlenecks of the website, API or any web service you are trying to debug.
Increase the load gradually, to understand where the errors start to appear, and the time metrics increase more than expected.
At the beginning of your test, you should understand which is the current load on your website and run load test much above your current average, just to be able to handle unexpected load on your application.
Load tests are easy to run using LoadFocus.com, an online cloud testing platform, that runs from your browser. No coding or configuration needed.