Tools for Ajax load testing

Question

There seems to be a lot of stress/load testing tool that support AJAX.
I am wondering how well does these tool implemented.

Do they only record http request and repl

Answer 1

Better write isolated test method or API for load testing ajax application. There are some reasons:

• It's not so easy to write functional tests to Ajax applications, for example for GWT.
• You can use Jmeter WebDriver plugin, but for each run it starts browser which will use most of RAM and CPU.
• You will load backend not frontend, so you can avoid ajax.

You can devide your testing like that: for Ajax application use Selenium or PhantomJS/CasperJS. For load testing use JMeter, Gatling via API not via Ajax.