function BackdropDatabaseCache::garbageCollection

1 cache.inc BackdropDatabaseCache::garbageCollection()

Implements BackdropCacheInterface::garbageCollection().

Overrides BackdropCacheInterface::garbageCollection

2 calls to BackdropDatabaseCache::garbageCollection()

BackdropDatabaseCache::isEmpty in core/includes/cache.inc: Implements BackdropCacheInterface::isEmpty().
BackdropFakeCache::garbageCollection in core/includes/cache-install.inc: Overrides BackdropDatabaseCache::garbageCollection().

1 method overrides BackdropDatabaseCache::garbageCollection()

BackdropFakeCache::garbageCollection in core/includes/cache-install.inc: Overrides BackdropDatabaseCache::garbageCollection().

File

core/includes/cache.inc, line 588: Functions and interfaces for cache handling.

Class

BackdropDatabaseCache: Defines a default cache implementation.

Code

function garbageCollection() {
  db_delete($this->bin)
    ->condition('expire', CACHE_PERMANENT, '<>')
    ->condition('expire', REQUEST_TIME, '<')
    ->execute();
}