Manuál PHP | ||
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Předcházející | Další |
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.
Toto rozšíření PECL není přibaleno k PHP. Informace o instalaci tohoto PECL rozšíření lze najít v kapitole manuálu nazvané Instalace rozšíření PECL. Další informace, jako nové verze, soubory ke stažení, zdrojové soubory, správcovské informace a CHANGELOG, lze najít zde: 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. Tuto DLL knihovnu pro rozšíření PECL můžete stahovat ze stránky PHP Downloads nebo z http://snaps.php.net/.
Chování těchto funkcí je ovlivněno nastavením parametrů v php.ini.
Tabulka 1. Memcache Configuration Options
Name | Default | Changeable | Changelog |
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memcache.allow_failover | "1" | PHP_INI_ALL | Available since Memcache 2.0.2 |
memcache.max_failover_attempts | "20" | PHP_INI_ALL | Available since Memcache 2.1.0 |
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 |
Zde je stručný popis konfiguračních direktiv.
memcache.allow_failover
booleanWhether to transparently failover to other servers on errors.
memcache.max_failover_attempts
integerDefines how many servers to try when setting and getting data. Used only in conjunction with memcache.allow_failover.
memcache.chunk_size
integerData will be transferred in chunks of this size, setting the value lower requires more network writes. Try increasing this value to 32768 if noticing otherwise inexplicable slowdowns.
memcache.default_port
stringThe 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.
Tabulka 2. MemCache Constants
Name | Description |
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MEMCACHE_COMPRESSED (integer) | Used to turn on-the-fly data compression on with Memcache::set(), Memcache::add(), a 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.
Předcházející | Domů | Další |
m_verifysslcert | Nahoru | Memcache::add |