Volatile cache can be used by the DeviceApi class to cache the detected properties. Using cache improves the performance by not doing unnecessary lookups in the data files.
It is based on an associative array where the key is CRC3 hashed and the value can be any data type.
In a stateless web application, there is no point to use this cache provider. It is mainly meant to client environments where repeated User-Agents are checked (e.g. processing a User-Agent list) and the cache provider can be kept in memory across different calls to getProperties().
__construct()
Construct a CacheProvider object.
Warning: count(): Parameter must be an array or an object that implements Countable in /opt/phpdoc/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1275 Warning: count(): Parameter must be an array or an object that implements Countable in /opt/phpdoc/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1275get( $key) : mixed
Get a stored value form cache.
| $key |
the cached value or null if the key does not exist in cache
set( $key, $value) : boolean
Store a value in cache.
| $key | ||
| $value |
true=cache stored
delete( $key) : boolean
Remove an item from the cache.
| $key |
true=cache deleted
clear() : boolean
Clear the whole cache.
Warning: count(): Parameter must be an array or an object that implements Countable in /opt/phpdoc/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1275 Warning: count(): Parameter must be an array or an object that implements Countable in /opt/phpdoc/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1275true=cache cleared
setMaxCacheEntries(integer $maxCacheEntries)
Set the max number of allowed entries in cache.
| integer | $maxCacheEntries |
getMaxCacheEntries() : integer
Get the max number of allowed cache entries.
Warning: count(): Parameter must be an array or an object that implements Countable in /opt/phpdoc/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1275 Warning: count(): Parameter must be an array or an object that implements Countable in /opt/phpdoc/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1275getNumCacheEntries() : integer
Get number of entries
Warning: count(): Parameter must be an array or an object that implements Countable in /opt/phpdoc/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1275 Warning: count(): Parameter must be an array or an object that implements Countable in /opt/phpdoc/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1275isEnabled() : boolean
Return whether cache is enabled (more than zero allowed cache entries).
Warning: count(): Parameter must be an array or an object that implements Countable in /opt/phpdoc/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1275 Warning: count(): Parameter must be an array or an object that implements Countable in /opt/phpdoc/vendor/twig/twig/lib/Twig/Extension/Core.php on line 1275