Memcached vs APC我应该选择哪一个? [英] Memcached vs APC which one should I choose?

问题描述

我阅读了这篇文章: http://www.mysqlperformanceblog. com/2006/09/27/apc-or-memcached/从什么时候开始..我想获得最好的可用缓存引擎，以便我的应用程序非常快.当然，我不想超速缓存，但是我至少要选择最好的东西.在该文章中，它说Memcached慢而apc快，那么为什么每个人都选择 memcached ?

http://framework. zend.com/manual/zh-CN/zend.cache.backends.html#zend.cache.backends.twolevels 这里说的是使用Apc，Memcache等快速(但受限制的)...和"您认为将Apc用作快速文件并将Memcache用作慢文件是一个好主意吗?

解决方案

Memcached是分布式缓存系统，而APC是非分布式的-主要是操作码缓存.

如果(且仅当)您有一个必须驻留在不同Web服务器上的Web应用程序(负载平衡)，则必须使用内存缓存进行分布式缓存. 如果没有，那就坚持使用APC及其缓存.

您应该始终使用操作码缓存，即APC(也将APC集成到php6 iirc中，所以为什么不立即开始使用它).

您可以/应该将两者用于不同的目的.

I read this article: http://www.mysqlperformanceblog.com/2006/09/27/apc-or-memcached/ from way back when.. I want to get the best caching engine available so that my application is really fast. Of course I don't want to over-cache but I want to at least choose the best thing out there. In that article it says Memcached is slow and apc is fast so why is everyone choosing memcached?

http://framework.zend.com/manual/en/zend.cache.backends.html#zend.cache.backends.twolevels here is says "use a fast one (but limited) like Apc, Memcache... and a "slow" one like File, Sqlite..." do you think using Apc as the fast and Memcache as the slow is a good idea?

解决方案

Memcached is a distributed caching system, whereas APC is non-distributed - and mainly an opcode cache.

If (and only if) you have a web application which has to live on different webservers (loadbalancing), you have to use memcache for distributed caching. If not, just stick to APC and its cache.

You should always use an opcode cache, which APC is (also APC will get integrated into php6 iirc, so why not start using it now).

You can/should use both for different purposes.

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