class PermanentRedisBackend in Permanent Cache Bin 8.2

Defines a permanent Redis cache implementation.

Hierarchy

• class \Drupal\redis\Cache\CacheBase implements CacheBackendInterface uses RedisPrefixTrait
  • class \Drupal\redis\Cache\PhpRedis
    • class \Drupal\pcb_redis\Cache\PermanentRedisBackend

File

modules/pcb_redis/src/Cache/PermanentRedisBackend.php, line 12

Namespace

Drupal\pcb_redis\Cache

class PermanentRedisBackend extends PhpRedis {

  /**
   * {@inheritdoc}
   */
  public function deleteAll() {

    // This cache doesn't need to be deleted when doing cache rebuild.
    // We do nothing here.
  }

  /**
   * Deletes all cache items in a bin when explicitly called.
   *
   * @see \Drupal\Core\Cache\DatabaseBackend::deleteAll()
   */
  public function deleteAllPermanent() {
    parent::deleteAll();
  }

  /**
   * {@inheritdoc}
   */
  public function removeBin() {
    parent::deleteAll();
  }

}

Members

Name	Modifiers	Type	Description	Overrides
CacheBackendInterface::CACHE_PERMANENT		constant	Indicates that the item should never be removed unless explicitly deleted.
CacheBase::$bin	protected	property
CacheBase::$checksumProvider	protected	property	The cache tags checksum provider.
CacheBase::$delayedDeletions	protected	property	Delayed deletions for deletions during a transaction.
CacheBase::$lastDeleteAll	protected	property	The last delete timestamp.
CacheBase::$minTtl	protected	property	Minimal TTL to use.
CacheBase::$permTtl	protected	property	Default TTL for CACHE_PERMANENT items.
CacheBase::$serializer	protected	property	The serialization class to use.
CacheBase::createEntryHash	protected	function	Create cache entry.
CacheBase::delete	public	function	Deletes an item from the cache. Overrides CacheBackendInterface::delete
CacheBase::deleteMultiple	public	function	Deletes multiple items from the cache. Overrides CacheBackendInterface::deleteMultiple
CacheBase::expandEntry	protected	function	Prepares a cached item.
CacheBase::garbageCollection	public	function	Performs garbage collection on a cache bin. Overrides CacheBackendInterface::garbageCollection
CacheBase::get	public	function	Returns data from the persistent cache. Overrides CacheBackendInterface::get
CacheBase::getExpiration	protected	function	Calculate the correct expiration time.
CacheBase::getKey	public	function	Return the key for the given cache key.
CacheBase::getLastDeleteAll	protected	function	Returns the last delete all timestamp.
CacheBase::getPermTtl	public	function	Get TTL for CACHE_PERMANENT items.
CacheBase::getTagForBin	protected	function	Return the key for the tag used to specify the bin of cache-entries.
CacheBase::invalidate	public	function	Marks a cache item as invalid. Overrides CacheBackendInterface::invalidate
CacheBase::invalidateAll	public	function	Marks all cache items as invalid. Overrides CacheBackendInterface::invalidateAll
CacheBase::invalidateMultiple	public	function	Marks cache items as invalid. Overrides CacheBackendInterface::invalidateMultiple
CacheBase::KEY_THRESHOLD		constant	Computed keys are let's say around 60 characters length due to key prefixing, which makes 1,000 keys DEL command to be something around 50,000 bytes length: this is huge and may not pass into Redis, let's split this off. Some recommend to…
CacheBase::LAST_DELETE_ALL_KEY		constant	Latest delete all flush KEY name.
CacheBase::LIFETIME_INFINITE		constant	Temporary cache items lifetime is infinite.
CacheBase::LIFETIME_PERM_DEFAULT		constant	Default lifetime for permanent items. Approximatively 1 year.
CacheBase::postRootTransactionCommit	public	function	Callback to be invoked after a database transaction gets committed.
CacheBase::setMinTtl	public	function	Set the minimum TTL (unit testing only).
CacheBase::setMultiple	public	function	Store multiple items in the persistent cache. Overrides CacheBackendInterface::setMultiple
CacheBase::setPermTtl	public	function	Set the permanent TTL.
PermanentRedisBackend::deleteAll	public	function	Deletes all cache items in a bin. Overrides CacheBase::deleteAll
PermanentRedisBackend::deleteAllPermanent	public	function	Deletes all cache items in a bin when explicitly called.
PermanentRedisBackend::removeBin	public	function	Remove a cache bin. Overrides CacheBase::removeBin
PhpRedis::$client	protected	property	Overrides CacheBase::$client
PhpRedis::doDeleteMultiple	public	function	Execute the deletion. Overrides CacheBase::doDeleteMultiple
PhpRedis::getMultiple	public	function	Returns data from the persistent cache when given an array of cache IDs. Overrides CacheBackendInterface::getMultiple
PhpRedis::set	public	function	Stores data in the persistent cache. Overrides CacheBackendInterface::set
PhpRedis::__construct	public	function	Creates a PHpRedis cache backend. Overrides CacheBase::__construct
RedisPrefixTrait::$prefix	protected	property
RedisPrefixTrait::getDefaultPrefix	protected	function	Get global default prefix
RedisPrefixTrait::getPrefix	protected	function	Get prefix
RedisPrefixTrait::setPrefix	public	function	Set prefix