ZF2 Optimize for high traffic

Question

My ZF2 application seems to be extremely slow when more than 3 users are using it at the same time.

I profile my code with xdebug and webgrind and non of my function

Answer 1

First of all to speedup your zf2 application you should use ZendOptimizerPlus. The vast part of execution time used to read and precompile php code. Typical ZF2 app has a lot of files, so it takes a lot of time to handle them.

ZendOp+ saves bytecode of your php application in shared memory, so server doesn't read a lot of files and doesn't parse it every request. ZendOp+ will be at php5.5 by default, so it is useful to know it and to use it.

Benchmarks gives 9x increase in performance for simple framework applications (symfony2 tests - http://www.ricardclau.com/2013/03/apc-vs-zend-optimizer-benchmarks-with-symfony2/ ).

I use it for my zf2 + doctrine2 + zfcUser application. Memcached is used for doctrine2 purposes, it gives only about 5% performance increase. So with ZendOp+ I got 6x increase (0.2 -> 0.03s) for simple pages and 3x increase (0.2 - 0.06) for complex pages with a lot of forms, entities, views. If I use classmap generator, I will update the answer.

Another issue is to use nginx + php-fpm rather than apache2+module. It saves server resources.