A list of tags that have already been invalidated in this request. Used to prevent the invalidation of the same cache tag multiple times.

public BackendChain::appendBackend(CacheBackendInterface $backend)

protected CacheContextsManager::getService($context_id)

protected Apcu4Backend::getIterator($search = NULL, $format = APC_ITER_ALL

public BackendChain::setMultiple(array $items)

The database connection. Type:

public MemoryBackend::delete($cid) Deletes

protected DatabaseCacheTagsChecksum::calculateChecksum(array

public MemoryBackend::__sleep() Prevents

public ApcuBackend::delete($cid) Deletes