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PHP Класс Prado\Caching\TMemCache

TMemCache implements a cache application module based on {@link http://www.danga.com/memcached/ memcached}. TMemCache can be configured with the Host and Port properties, which specify the host and port of the memcache server to be used. By default, they take the value 'localhost' and 11211, respectively. These properties must be set before {@link init} is invoked. The following basic cache operations are implemented: - {@link get} : retrieve the value with a key (if any) from cache - {@link set} : store the value with a key into cache - {@link add} : store the value only if cache does not have this key - {@link delete} : delete the value with the specified key from cache - {@link flush} : delete all values from cache Each value is associated with an expiration time. The {@link get} operation ensures that any expired value will not be returned. The expiration time can be specified by the number of seconds (maximum 60*60*24*30) or a UNIX timestamp. A expiration time 0 represents never expire. By definition, cache does not ensure the existence of a value even if it never expires. Cache is not meant to be an persistent storage. Also note, there is no security measure to protected data in memcache. All data in memcache can be accessed by any process running in the system. To use this module, the memcache PHP extension must be loaded. Some usage examples of TMemCache are as follows, $cache=new TMemCache; // TMemCache may also be loaded as a Prado application module $cache->init(null); $cache->add('object',$object); $object2=$cache->get('object'); You can configure TMemCache two different ways. If you only need one memcache server you may use the method as follows. If you want a more complex configuration, you may use the method as follows. If loaded, TMemCache will register itself with {@link TApplication} as the cache module. It can be accessed via {@link TApplication::getCache()}. TMemCache may be configured in application configuration file as follows where {@link getHost Host} and {@link getPort Port} are configurable properties of TMemCache. Automatic compression of values may be used (using zlib extension) by setting {@link getThreshold Threshold} and {@link getMinSavings MinSavings} properties. NB : MemCache server(s) must be restarted to apply settings. Require (PECL memcache >= 2.0.0) or memcached if {@link useMemcached} is true. Показать файл Открыть проект

Открытые методы

Метод	Описание
__destruct ( )	Destructor.
flush ( )	Deletes all values from cache.
getHost ( ) : string
getMinSavings ( ) : float
getPort ( ) : integer
getThreshold ( ) : integer
getUseMemcached ( ) : boolean
init ( $config )	Initializes this module.
setHost ( $value )
setMinSavings ( $value )
setPort ( $value )
setThreshold ( $value )
setUseMemcached ( $value )

Защищенные методы

Метод	Описание
addValue ( $key, $value, $expire ) : boolean	Stores a value identified by a key into cache if the cache does not contain this key.
deleteValue ( $key ) : boolean	Deletes a value with the specified key from cache This is the implementation of the method declared in the parent class.
getValue ( $key ) : string	Retrieves a value from cache with a specified key.
setValue ( $key, $value, $expire ) : boolean	Stores a value identified by a key in cache.

Приватные методы

Метод	Описание
loadConfig ( $xml )	Loads configuration from an XML element

Описание методов