php page appears to be being cached in browser, but shouldn't be...

Web Performance Discuss Test Results
1

Hi,

I’m trying to compare the front end timings between an old (and we believe quicker) version of our codebase on a slow server with our current set up which we believe is slower from a front end perspective, but on a fast server.

I am trying to simulate a logged in user who has visited a few pages already.

How come I never see the initial showthread.php timings? It’s almost like its caching the showthread page in the browser, but surely it shouldnt be doing that?

Here are a couple of tests, but they reliably show the same thing:

http://www.webpagetest.org/result/120626_86_JKM/1/details/
http://www.webpagetest.org/result/120626_8T_M8T/1/details/

Help greatly appreciated. Thanks

2

You probably want to look at different pages using showthread. There’s a good chance you are hitting the browser’s in-memory page cache.