How to improve PHP performance?

Question

I created a PHP application for Facebook. It uses MySQL, Memcached and runs on Lighttpd on Centos 2.6 Ghz and 2 GB RAM.

this is basically one PHP file that is cached after the first run, and each time it is served in 0.8 ms directly from Memcached.

What else can I do to reduce this time?

Answer 1

Once you get to 0.8 ms, I'm not sure if you can go lower.

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Answer 2

XDebug profiler. , - , .

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Answer 3

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Answer 4

Do you have a php script that receives data from memcached and displays it, or does the web server itself receive data directly from memcached?

I don't know if lighthttpd can display the page directly from memcached, but I know that nginx can do this for google for ngx_http_memcached_module