Interface for cache drivers.
@license http://www.opensource.org/licenses/lgpl-license.php LGPL @link www.doctrine-project.org @since 2.0 @author Benjamin Eberlei <kontakt@beberlei.de> @author Guilherme Blanco <guilhermeblanco@hotmail.com> @author Jonathan Wage <jonwage@gmail.com> @author Roman Borschel <roman@code-factory.org> @author Fabio B. Silva <fabio.bat.silva@gmail.com>
Expanded class hierarchy of Cache
All classes that implement Cache
interface Cache {
const STATS_HITS = 'hits';
const STATS_MISSES = 'misses';
const STATS_UPTIME = 'uptime';
const STATS_MEMORY_USAGE = 'memory_usage';
const STATS_MEMORY_AVAILIABLE = 'memory_available';
/**
* Fetches an entry from the cache.
*
* @param string $id cache id The id of the cache entry to fetch.
* @return mixed The cached data or FALSE, if no cache entry exists for the given id.
*/
function fetch($id);
/**
* Test if an entry exists in the cache.
*
* @param string $id cache id The cache id of the entry to check for.
* @return boolean TRUE if a cache entry exists for the given cache id, FALSE otherwise.
*/
function contains($id);
/**
* Puts data into the cache.
*
* @param string $id The cache id.
* @param mixed $data The cache entry/data.
* @param int $lifeTime The lifetime. If != 0, sets a specific lifetime for this cache entry (0 => infinite lifeTime).
* @return boolean TRUE if the entry was successfully stored in the cache, FALSE otherwise.
*/
function save($id, $data, $lifeTime = 0);
/**
* Deletes a cache entry.
*
* @param string $id cache id
* @return boolean TRUE if the cache entry was successfully deleted, FALSE otherwise.
*/
function delete($id);
/**
* Retrieves cached information from data store
*
* The server's statistics array has the following values:
*
* - <b>hits</b>
* Number of keys that have been requested and found present.
*
* - <b>misses</b>
* Number of items that have been requested and not found.
*
* - <b>uptime</b>
* Time that the server is running.
*
* - <b>memory_usage</b>
* Memory used by this server to store items.
*
* - <b>memory_available</b>
* Memory allowed to use for storage.
*
* @since 2.2
* @var array Associative array with server's statistics if available, NULL otherwise.
*/
function getStats();
}
Name | Modifiers | Type | Description | Overrides |
---|---|---|---|---|
Cache:: |
function | Fetches an entry from the cache. | 1 | |
Cache:: |
function | Test if an entry exists in the cache. | 1 | |
Cache:: |
function | Puts data into the cache. | 1 | |
Cache:: |
function | Deletes a cache entry. | 1 | |
Cache:: |
function | Retrieves cached information from data store | 1 | |
Cache:: |
constant | |||
Cache:: |
constant | |||
Cache:: |
constant | |||
Cache:: |
constant | |||
Cache:: |
constant |