PHP扩展memcache与memcached的差别
PHP扩展memcache与memcached的区别
1. memcached简介
memcached是高性能,分布式的内存对象缓存系统。
PHP操作memcached服务有两个扩展 memcache 和 memcached。
2. memcache扩展
memcache扩展支持面向对象和面向过程两种接口。
它的函数受php.ini影响,所以必须在php.ini配置文件中设置。
该扩展出现时间较早(2004年)。
php.ini配置:
[memcache]extension = memcache.somemcache.allow_failover = "0"memcache.hash_strategy = "consistent"memcache.default_timeout_ms = 100
3. memcached扩展
此扩展使用了libmemcached库提供的api与memcached服务端进行交互。
所以安装时需要先安装libmemcached库。
memcached扩展只支持面向对象的接口。
安装时不需要在php.ini中配置,只引入 extension即可。
该扩展出现时间较晚(2009年)。
memcached功能比memcache更全,支持的函数更多。
3. 使用哪个扩展
推荐使用memcached扩展。
memcached功能更全一点。
4. 具体对比不同点
下面一张表对比具体的不同点,地址:
https://code.google.com/p/memcached/wiki/PHPClientComparison

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