7 methods override CacheBackendInterface::garbageCollection()
- ApcuBackend::garbageCollection in core/lib/ Drupal/ Core/ Cache/ ApcuBackend.php 
- Performs garbage collection on a cache bin.
- BackendChain::garbageCollection in core/lib/ Drupal/ Core/ Cache/ BackendChain.php 
- Performs garbage collection on a cache bin.
- ChainedFastBackend::garbageCollection in core/lib/ Drupal/ Core/ Cache/ ChainedFastBackend.php 
- Performs garbage collection on a cache bin.
- DatabaseBackend::garbageCollection in core/lib/ Drupal/ Core/ Cache/ DatabaseBackend.php 
- Performs garbage collection on a cache bin.
- MemoryBackend::garbageCollection in core/lib/ Drupal/ Core/ Cache/ MemoryBackend.php 
- Performs garbage collection on a cache bin.
- NullBackend::garbageCollection in core/lib/ Drupal/ Core/ Cache/ NullBackend.php 
- Performs garbage collection on a cache bin.
- PhpBackend::garbageCollection in core/lib/ Drupal/ Core/ Cache/ PhpBackend.php 
- Performs garbage collection on a cache bin.
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