One current trend in web development is toward the proper use of REST (Representational State Transfer). Rest maps 4 of the HTTP verbs, GET, POST, PUT and DELETE to Create, Read, Update, and Delete actions within a web application.

Browsers do not have direct support for PUT and DELETE currently, although this is coming when HTML 5 eventually comes out. However, PUT and DELETE are already supported in the XMLHttpRequest implementation in all major browsers, so it is possible create proper REST implementations of Ajax forms. The gotcha in this case is that many load testing tools will have trouble recording PUT or DELETE requests, or problems running them at test-time. For the time being, if you are using Ajax forms, double-check to make sure your requests are properly recorded and replayed.

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