hosted rest load testing solution

can anyone recommend a hosted solution for load testing a rest interface (including all verbs, signed requests and multiple sets of simulated tasks)?

we don't want to set up a server with the tools and we only need this occasionally.

we'd like to test it at about 500 requests per second and see how the system r开发者_如何学Pythonesponds.

would be awsome if anyone could share their experience with hosted solutions providing this service.

thanks!

Not a hosted solution but a quick and easy way to load test a HTTP endpoint is to use Fiddler and a plugin called Stress Stimulus http://stresstimulus.stimulustechnology.com/ It's free too!