Question

I’ve searched for some tips how to optimize ZF’s performance, and I found a good list here:
Using Zend Framework for highload projects
(you can see the accepted answer by David Weinraub)

What I dont understand there is the 4.point: “Preload everything (Symfony 2 Preview does!)…”

What does it mean to “preload everything”?
You can of course write some other tips if you have more, (or if the above answers are not fully satisfactory..)

Thanks for your time. And sorry for my bad english.

Answer 1

Preloading means taking the classes used in almost every request (like Bootstrap, Zend_Config, Zend_Registry, Zend_Db, … depending on your project) and putting them all in one file you load at first instead of doing lazy loading (loading only when needed).

As Zend does not do it by itself, it can be rough when you want to update it. I would try the following before editing Zend’s code:

There is the performance guide from Zend:
http://framework.zend.com/manual/en/performance.html

To help speedup your application, you should consider using APC :
http://php.net/manual/en/book.apc.php

Finally, you could cache computed results with Memcached:
http://php.net/manual/en/book.memcached.php

Speeding up your application must be done on multiple levels to be the most efficient.