Comments on: Put Your PHP App on Steroids - Optimizing with APC Cache

By: IT-Republik-php

IT-Republik-php — Fri, 11 Apr 2008 09:44:40 +0000

Web-Apps auf Speed: Eine Einführung in Caching mit APC…

Wenn eine Webanwendung erst einmal populär wird, kann die Last schnell zum …

By: Ian

Ian — Fri, 11 Apr 2008 08:07:07 +0000

@Jilles

You’re right, but I didn’t want to try and wrap them up into one post since there’s a bit more to getting memcached going than a simple PECL extension… I did mention right at the closer of the article that I’d hopefully be getting around to working with mecached (I’m just cooking something else up first that should be pretty cool

By: Jilles

Jilles — Fri, 11 Apr 2008 07:08:21 +0000

This is a good article. One note though: for large systems you’d want a cache that is local to that machine (APC can do this for you), but also a cache that is centralized (ex. memcached). You’ll want this as the number of servers is growing, you will increase the cache misses (depending on the data and it’s access patterns).

By: Ian

Ian — Wed, 09 Apr 2008 01:44:40 +0000

Christian,

I actually missed a bit of my code in the examples… you have to parse the result set then everything’s hunky-dory. I’ve updated the samples appropriately (I’m just used to having the pre-parsed from a database abstraction layer)

By: Christian Decker

Christian Decker — Wed, 09 Apr 2008 01:21:18 +0000

Thanks Ian for responding so quickly. I’m still having a small problem with the above example code as it saves a resource descriptor in the cache. Is the apc_cache intelligent enough to extract the resultrows from the resource, or did I get something wrong with the serialization?

By: Ian

Ian — Mon, 07 Apr 2008 05:44:21 +0000

@Christian,

You can store anything that php can serialize in the cache… which is just about anything in php

Thanks for the comment!

By: Christian Decker

Christian Decker — Mon, 07 Apr 2008 01:54:57 +0000

Great article, I’m definitely adding APC capabilities into my Database abstraction layer from now on.
I was wondering wether I can store arbitrary datasets into the cache, for example some datastructures for complex routing calculations that I’d like not to repeat every time.