Interface CacheAdapterInterface

Interface for cache adapters.

Cache adapters allow Guzzle to utilize various frameworks for caching HTTP responses.

Namespace: Guzzle\Cache
Link: Inspired by Doctrine 2
Located at src/Guzzle/Cache/CacheAdapterInterface.php

Methods summary
`public boolean`	# `contains( string $id, array $options = null )` Test if an entry exists in the cache. Test if an entry exists in the cache. Parameters `$id` cache id The cache id of the entry to check for. `$options` Array of cache adapter options Returns boolean Returns TRUE if a cache entry exists for the given cache id, FALSE otherwise.
`public boolean`	# `delete( string $id, array $options = null )` Deletes a cache entry. Deletes a cache entry. Parameters `$id` cache id `$options` Array of cache adapter options Returns boolean TRUE on success, FALSE on failure
`public string`	# `fetch( string $id, array $options = null )` Fetches an entry from the cache. Fetches an entry from the cache. Parameters `$id` cache id The id of the cache entry to fetch. `$options` Array of cache adapter options Returns string The cached data or FALSE, if no cache entry exists for the given id.
`public boolean`	# `save( string $id, string $data, integer\|boolean $lifeTime = false, array $options = null )` Puts data into the cache. Puts data into the cache. Parameters `$id` The cache id `$data` The cache entry/data `$lifeTime` The lifetime. If != false, sets a specific lifetime for this cache entry `$options` Array of cache adapter options Returns boolean TRUE if the entry was successfully stored in the cache, FALSE otherwise.