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5. Load Testing > Trade-offs with Load Testing Tools

Trade-offs with Load Testing Tools

Load testing a web site is not straightforward, unless the site is strictly text. You may want to see how the site will perform when hit by a million browsers, but no one has the hardware to run a million test browsers on individual PCs. So most load tests are done with small programs that emulate browsers. As the realism of the emulation increases to get all the images, use HTTP 1.1, SSL, etc., the emulators approach the size of browsers. The most realistic emulation is finally software that actually controls a browser, but that is not scalable.

Another problem with emulators is that you often have to deeply analyze a web page to write a script that can test it. Pages that post content usually have parameters input by the user, which have to be accounted for in the emulator. You can record a script with my


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