Memcache module provides handy procedural and object oriented interface to memcached, highly effective caching daemon, which was especially designed to decrease database load in dynamic web applications.
More information about memcached can be found at http://www.danga.com/memcached/.
This module uses functions of zlib to support on-the-fly data compression. Zlib is required to install this module.
PHP 4.3.3 or newer is required to use the memcache extension.
Ez a PECL kiterjesztés a PHP alapterjesztésében nem szerepel. További információk, mint például új kiadások, letöltés, forrásállományok, karbantartók, CHANGELOG találhatóak itt: http://pecl.php.net/package/memcache.
In order to use these functions you must compile PHP with Memcache support by using the --enable-memcache[=DIR] option.
Windows users will enable php_memcache.dll inside of php.ini in order to use these functions. Ezen PECL kiterjesztés DLL állományát letöltheted a PHP Letöltések, vagy a http://snaps.php.net/ címről.
Az alábbi függvények viselkedése befolyásolható a php.ini segítségével.
Táblázat 1. Memcache Configuration Options
Name | Default | Changeable | Changelog |
---|---|---|---|
memcache.allow_failover | "1" | PHP_INI_ALL | Available since Memcache 2.0.2 |
memcache.chunk_size | "8192" | PHP_INI_ALL | Available since Memcache 2.0.2 |
memcache.default_port | "11211" | PHP_INI_ALL | Available since Memcache 2.0.2 |
A témába vágó konfigurációs direktívák rövid leírása
Whether to transparently failover to other servers on errors.
Data will be transfered in chunks of this size, setting the value lower requires more network writes. Try increasing this value to 32768 if noticing otherwise inexplicable slowdowns.
The default TCP port number to use when connecting to the memcached server if no other port is specified.
There is only one resource type used in memcache module - it's the link identifier for a cache server connection.
Táblázat 2. MemCache Constants
Name | Description |
---|---|
MEMCACHE_COMPRESSED (integer) | Used to turn on-the-fly data compression on with Memcache::set(), Memcache::add() és Memcache::replace(). |
In the above example, an object is being saved in the cache and then retrieved back. Object and other non-scalar types are serialized before saving, so it's impossible to store resources (i.e. connection identifiers and others) in the cache.