Do I need memcached with Opcache ?

Question

I don't know anything about caching other than having read that people use APC/Opcache/Memcache/Memchached/Varnish ... to makes PHP go faster :)

So, I tried APC last week since I was on PHP5.4, but then updated my to PHP5.5 so I could use Opcache. So, now that Opcache is working, I need to even make my wordpress site faster, and since I have heard that APC is not compatible with opcache, I would like to know if memcached is OK to use, as I am almost certain varnish is OK because it is not related to PHP.

So, will using memcached further improve my site?

http://php.net/manual/en/memcached.sessions.php -- you can do it automatically with the PHP.ini. Memcached is useful for many other things, but PHP Sessions would be a quick win if they're currently stored in files. — J.D. Pace, Jul 24 '14 at 01:23

score 40 · Accepted Answer · answered Jul 24 '14 at 01:11

40

OPcache is for accelerating code access. memcached is for accelerating data access. They are completely different, and completely independent.

answered Jul 24 '14 at 01:11

Ignacio Vazquez-Abrams

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Thanks for the answer. Its good to know they are different and can work together improve speed – robue-a7119895 Jul 24 '14 at 01:15
However, you could use opcache for data access by writing data into php files. – John Jan 20 '20 at 17:24

score 7 · Answer 2 · answered Jul 24 '14 at 21:18

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While OpCache doesn't support the user-side caching functionality of APC, it can still be a useful tool, and so the Pecl module, APCU was extracted from the original. It's entirely compatible with the original, but leaves the zend-code cache for OpCache.

answered Jul 24 '14 at 21:18

Alister Bulman

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Do I need memcached with Opcache ?

2 Answers2