90 files declare their use of CacheBackendInterface

AccessPolicyProcessor.php in core/lib/Drupal/Core/Session/AccessPolicyProcessor.php
AccessPolicyProcessorTest.php in core/tests/Drupal/Tests/Core/Session/AccessPolicyProcessorTest.php
ActionManager.php in core/lib/Drupal/Core/Action/ActionManager.php
ArchiverManager.php in core/lib/Drupal/Core/Archiver/ArchiverManager.php
AssetResolver.php in core/lib/Drupal/Core/Asset/AssetResolver.php
BlockContentUuidLookup.php in core/modules/block_content/src/BlockContentUuidLookup.php
BlockManager.php in core/lib/Drupal/Core/Block/BlockManager.php
BlockManagerTest.php in core/tests/Drupal/Tests/Core/Block/BlockManagerTest.php
BreakpointManager.php in core/modules/breakpoint/src/BreakpointManager.php
CacheBackendDecorator.php in core/modules/system/tests/modules/performance_test/src/Cache/CacheBackendDecorator.php
CachedStorage.php in core/lib/Drupal/Core/Config/CachedStorage.php
CacheFactoryDecorator.php in core/modules/system/tests/modules/performance_test/src/Cache/CacheFactoryDecorator.php
CacheTagsInvalidatorTest.php in core/tests/Drupal/Tests/Core/Cache/CacheTagsInvalidatorTest.php
ChainedFastBackendFactoryTest.php in core/tests/Drupal/Tests/Core/Cache/ChainedFastBackendFactoryTest.php
CommentStorage.php in core/modules/comment/src/CommentStorage.php
ComponentPluginManager.php in core/lib/Drupal/Core/Theme/ComponentPluginManager.php
ConditionManager.php in core/lib/Drupal/Core/Condition/ConditionManager.php
ConfigActionManager.php in core/lib/Drupal/Core/Config/Action/ConfigActionManager.php
ConstraintManager.php in core/lib/Drupal/Core/Validation/ConstraintManager.php
ContentEntityStorageBase.php in core/lib/Drupal/Core/Entity/ContentEntityStorageBase.php
ContextualLinkManager.php in core/lib/Drupal/Core/Menu/ContextualLinkManager.php
DatabaseDriverList.php in core/lib/Drupal/Core/Extension/DatabaseDriverList.php
DbUpdateController.php in core/modules/system/src/Controller/DbUpdateController.php
DefaultPluginManager.php in core/lib/Drupal/Core/Plugin/DefaultPluginManager.php
EditorManager.php in core/modules/editor/src/Plugin/EditorManager.php
ElementInfoManager.php in core/lib/Drupal/Core/Render/ElementInfoManager.php
EntityDisplayRepository.php in core/lib/Drupal/Core/Entity/EntityDisplayRepository.php
EntityFieldManager.php in core/lib/Drupal/Core/Entity/EntityFieldManager.php
EntityFieldManagerTest.php in core/tests/Drupal/Tests/Core/Entity/EntityFieldManagerTest.php
EntityLastInstalledSchemaRepository.php in core/lib/Drupal/Core/Entity/EntityLastInstalledSchemaRepository.php
EntityTypeBundleInfo.php in core/lib/Drupal/Core/Entity/EntityTypeBundleInfo.php
EntityTypeBundleInfoTest.php in core/tests/Drupal/Tests/Core/Entity/EntityTypeBundleInfoTest.php
EntityTypeManager.php in core/lib/Drupal/Core/Entity/EntityTypeManager.php
EntityTypeManagerTest.php in core/tests/Drupal/Tests/Core/Entity/EntityTypeManagerTest.php
ExtensionList.php in core/lib/Drupal/Core/Extension/ExtensionList.php
ExtensionListTest.php in core/tests/Drupal/Tests/Core/Extension/ExtensionListTest.php
FieldDefinitionListener.php in core/lib/Drupal/Core/Field/FieldDefinitionListener.php
FieldDefinitionListenerTest.php in core/tests/Drupal/Tests/Core/Field/FieldDefinitionListenerTest.php
FieldTypeCategoryManager.php in core/lib/Drupal/Core/Field/FieldTypeCategoryManager.php
FieldTypePluginManager.php in core/lib/Drupal/Core/Field/FieldTypePluginManager.php
FieldTypePluginManagerTest.php in core/tests/Drupal/Tests/Core/Field/FieldTypePluginManagerTest.php
FormatterPluginManager.php in core/lib/Drupal/Core/Field/FormatterPluginManager.php
GenericCacheBackendUnitTestBase.php in core/tests/Drupal/KernelTests/Core/Cache/GenericCacheBackendUnitTestBase.php
HelpTopicPluginManager.php in core/modules/help/src/HelpTopicPluginManager.php
ImageEffectManager.php in core/modules/image/src/ImageEffectManager.php
ImageToolkitManager.php in core/lib/Drupal/Core/ImageToolkit/ImageToolkitManager.php
ImageToolkitOperationManager.php in core/lib/Drupal/Core/ImageToolkit/ImageToolkitOperationManager.php
LayoutPluginManager.php in core/lib/Drupal/Core/Layout/LayoutPluginManager.php
LayoutPluginManagerTest.php in core/tests/Drupal/Tests/Core/Layout/LayoutPluginManagerTest.php
LibraryDiscoveryCollector.php in core/lib/Drupal/Core/Asset/LibraryDiscoveryCollector.php
LinkRelationTypeManager.php in core/lib/Drupal/Core/Http/LinkRelationTypeManager.php
LocalActionManager.php in core/lib/Drupal/Core/Menu/LocalActionManager.php
LocalActionManagerTest.php in core/tests/Drupal/Tests/Core/Menu/LocalActionManagerTest.php
LocalTaskManager.php in core/lib/Drupal/Core/Menu/LocalTaskManager.php
MailManager.php in core/lib/Drupal/Core/Mail/MailManager.php
MemoryCacheInterface.php in core/lib/Drupal/Core/Cache/MemoryCache/MemoryCacheInterface.php
MenuActiveTrail.php in core/lib/Drupal/Core/Menu/MenuActiveTrail.php
MenuTreeStorage.php in core/lib/Drupal/Core/Menu/MenuTreeStorage.php
MigrateDestinationPluginManager.php in core/modules/migrate/src/Plugin/MigrateDestinationPluginManager.php
MigratePluginManager.php in core/modules/migrate/src/Plugin/MigratePluginManager.php
MigrateSourcePluginManager.php in core/modules/migrate/src/Plugin/MigrateSourcePluginManager.php
MigrateSourceTest.php in core/modules/migrate/tests/src/Unit/MigrateSourceTest.php
MigrationPluginManager.php in core/modules/migrate/src/Plugin/MigrationPluginManager.php
MigrationPluginManagerTest.php in core/modules/migrate/tests/src/Unit/MigrationPluginManagerTest.php
ModuleExtensionList.php in core/lib/Drupal/Core/Extension/ModuleExtensionList.php
ModuleHandler.php in core/lib/Drupal/Core/Extension/ModuleHandler.php
ModuleHandlerTest.php in core/tests/Drupal/Tests/Core/Extension/ModuleHandlerTest.php
ModuleInstaller.php in core/lib/Drupal/Core/Extension/ModuleInstaller.php
PermissionsHashGenerator.php in core/lib/Drupal/Core/Session/PermissionsHashGenerator.php
PermissionsHashGeneratorTest.php in core/tests/Drupal/Tests/Core/Session/PermissionsHashGeneratorTest.php
PluginManager.php in core/modules/system/tests/modules/lazy_route_provider_install_test/src/PluginManager.php
QueueWorkerManager.php in core/lib/Drupal/Core/Queue/QueueWorkerManager.php
Registry.php in core/lib/Drupal/Core/Theme/Registry.php
RouteProvider.php in core/lib/Drupal/Core/Routing/RouteProvider.php
SelectionPluginManager.php in core/lib/Drupal/Core/Entity/EntityReferenceSelection/SelectionPluginManager.php
SqlContentEntityStorage.php in core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php
State.php in core/lib/Drupal/Core/State/State.php
StorageComparer.php in core/lib/Drupal/Core/Config/StorageComparer.php
ThemeExtensionList.php in core/lib/Drupal/Core/Extension/ThemeExtensionList.php
ThemeInitialization.php in core/lib/Drupal/Core/Theme/ThemeInitialization.php
ThemeRegistry.php in core/lib/Drupal/Core/Utility/ThemeRegistry.php
Token.php in core/lib/Drupal/Core/Utility/Token.php
TwigEnvironment.php in core/lib/Drupal/Core/Template/TwigEnvironment.php
TwigPhpStorageCache.php in core/lib/Drupal/Core/Template/TwigPhpStorageCache.php
TypedConfigManager.php in core/lib/Drupal/Core/Config/TypedConfigManager.php
TypedDataManager.php in core/lib/Drupal/Core/TypedData/TypedDataManager.php
UpdateBackend.php in core/lib/Drupal/Core/Update/UpdateBackend.php
VariantManager.php in core/lib/Drupal/Core/Display/VariantManager.php
WidgetPluginManager.php in core/lib/Drupal/Core/Field/WidgetPluginManager.php
WorkspacesMenuTreeStorage.php in core/modules/workspaces/src/WorkspacesMenuTreeStorage.php

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