class Apcu4Backend in Drupal 8

Stores cache items in the Alternative PHP Cache User Cache (APCu).

This class is used with APCu versions >= 4.0.0 and < 5.0.0.

Hierarchy

• class \Drupal\Core\Cache\ApcuBackend implements CacheBackendInterface
  • class \Drupal\Core\Cache\Apcu4Backend

Deprecated

in drupal:8.8.0 and is removed from from drupal:9.0.0. Use \Drupal\Core\Cache\ApcuBackend instead.

See also

https://www.drupal.org/node/3063510

File

core/lib/Drupal/Core/Cache/Apcu4Backend.php, line 17

Namespace

Drupal\Core\Cache

class Apcu4Backend extends ApcuBackend {

  /**
   * {@inheritdoc}
   *
   * @return \APCIterator
   */
  protected function getIterator($search = NULL, $format = APC_ITER_ALL, $chunk_size = 100, $list = APC_LIST_ACTIVE) {
    return new \APCIterator('user', $search, $format, $chunk_size, $list);
  }

}

Members

Name	Modifiers	Type	Description	Overrides
Apcu4Backend::getIterator	protected	function	Overrides ApcuBackend::getIterator
ApcuBackend::$bin	protected	property	The name of the cache bin to use.
ApcuBackend::$binPrefix	protected	property	Prefix for all keys in this cache bin.
ApcuBackend::$checksumProvider	protected	property	The cache tags checksum provider.
ApcuBackend::$sitePrefix	protected	property	Prefix for all keys in the storage that belong to this site.
ApcuBackend::delete	public	function	Deletes an item from the cache. Overrides CacheBackendInterface::delete
ApcuBackend::deleteAll	public	function	Deletes all cache items in a bin. Overrides CacheBackendInterface::deleteAll
ApcuBackend::deleteMultiple	public	function	Deletes multiple items from the cache. Overrides CacheBackendInterface::deleteMultiple
ApcuBackend::garbageCollection	public	function	Performs garbage collection on a cache bin. Overrides CacheBackendInterface::garbageCollection
ApcuBackend::get	public	function	Returns data from the persistent cache. Overrides CacheBackendInterface::get
ApcuBackend::getAll	protected	function	Returns all cached items, optionally limited by a cache ID prefix.
ApcuBackend::getApcuKey	public	function	Prepends the APCu user variable prefix for this bin to a cache item ID.
ApcuBackend::getMultiple	public	function	Returns data from the persistent cache when given an array of cache IDs. Overrides CacheBackendInterface::getMultiple
ApcuBackend::invalidate	public	function	Marks a cache item as invalid. Overrides CacheBackendInterface::invalidate
ApcuBackend::invalidateAll	public	function	Marks all cache items as invalid. Overrides CacheBackendInterface::invalidateAll
ApcuBackend::invalidateMultiple	public	function	Marks cache items as invalid. Overrides CacheBackendInterface::invalidateMultiple
ApcuBackend::prepareItem	protected	function	Prepares a cached item.
ApcuBackend::removeBin	public	function	Remove a cache bin. Overrides CacheBackendInterface::removeBin
ApcuBackend::set	public	function	Stores data in the persistent cache. Overrides CacheBackendInterface::set
ApcuBackend::setMultiple	public	function	Store multiple items in the persistent cache. Overrides CacheBackendInterface::setMultiple
ApcuBackend::__construct	public	function	Constructs a new ApcuBackend instance.
CacheBackendInterface::CACHE_PERMANENT		constant	Indicates that the item should never be removed unless explicitly deleted.