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PHP Class Neos\Cache\Backend\MemcachedBackend

This backend uses the following types of cache keys: - tag_xxx xxx is tag name, value is array of associated identifiers identifier. This is "forward" tag index. It is mainly used for obtaining content by tag (get identifier by tag -> get content by identifier) - ident_xxx xxx is identifier, value is array of associated tags. This is "reverse" tag index. It provides quick access for all tags associated with this identifier and used when removing the identifier - tagIndex Value is a List of all tags (array) Each key is prepended with a prefix. By default prefix consists from two parts separated by underscore character and ends in yet another underscore character: - "Flow" - MD5 of script path and filename and SAPI name This prefix makes sure that keys from the different installations do not conflict. Note: When using the Memcache backend to store values of more than ~1 MB, the data will be split into chunks to make them fit into the caches limits. ファイルを表示 Open project: neos/flow-development-collection Class Usage Examples

Protected Properties

Property	Type	Description
$flags	integer	Indicates whether the memcache uses compression or not (requires zlib), either 0 or MEMCACHE_COMPRESSED
$identifierPrefix	string	A prefix to separate stored data from other data possible stored in the memcache
$memcache	Memcache | Memcached	Instance of the PHP Memcache/Memcached class
$servers	array	Array of Memcache server configurations

Public Methods

Method	Description
__construct ( EnvironmentConfiguration $environmentConfiguration, array $options = [] )
collectGarbage ( ) : void	Does nothing, as memcache/memcached does GC itself
findIdentifiersByTag ( string $tag ) : array	Finds and returns all cache entry identifiers which are tagged by the specified tag.
flush ( ) : void	Removes all cache entries of this cache.
flushByTag ( string $tag ) : integer	Removes all cache entries of this cache which are tagged by the specified tag.
get ( string $entryIdentifier ) : mixed	Loads data from the cache.
getPrefixedIdentifier ( string $entryIdentifier ) : string	Returns the internally used, prefixed entry identifier for the given public entry identifier.
has ( string $entryIdentifier ) : boolean	Checks if a cache entry with the specified identifier exists.
remove ( string $entryIdentifier ) : boolean	Removes all cache entries matching the specified identifier.
set ( string $entryIdentifier, string $data, array $tags = [], integer $lifetime = null ) : void	Saves data in the cache.
setCache ( Neos\Cache\Frontend\FrontendInterface $cache ) : void	Initializes the identifier prefix when setting the cache.

Protected Methods

Method	Description
addIdentifierToTags ( string $entryIdentifier, array $tags ) : void	Associates the identifier with the given tags
findTagsByIdentifier ( string $identifier ) : array	Finds all tags for the given identifier. This function uses reverse tag index to search for tags.
removeIdentifierFromAllTags ( string $entryIdentifier ) : void	Removes association of the identifier with the given tags
setCompression ( boolean $useCompression ) : void	Setter for compression flags bit
setItem ( string $key, string $value, integer $expiration ) : boolean	Stores an item on the server
setServers ( array $servers ) : void	Setter for servers to be used. Expects an array, the values are expected to be formatted like "[:]" or "unix://"

Method Details

Property Details