cache collector all the things

diff --git a/core/core.services.yml b/core/core.services.yml
index 7abab67..2867596 100644
--- a/core/core.services.yml
+++ b/core/core.services.yml
@@ -100,6 +100,11 @@ services:
     factory_method: get
     factory_service: cache_factory
     arguments: [discovery]
+  cache.plugin_collector:
+    class: Drupal\Core\Cache\CacheCollectorBackend
+    arguments: [all_plugins, '@cache.discovery', '@lock']
+    tags:
+      - { name: needs_destruction }
   page_cache_request_policy:
     class: Drupal\Core\PageCache\DefaultRequestPolicy
     tags:
@@ -154,7 +159,7 @@ services:
     class: Drupal\Core\Config\InstallStorage
   config.typed:
     class: Drupal\Core\Config\TypedConfigManager
-    arguments: ['@config.storage', '@config.storage.schema', '@cache.discovery', '@module_handler']
+    arguments: ['@config.storage', '@config.storage.schema', '@cache.plugin_collector', '@module_handler']
     tags:
       - { name: plugin_manager_cache_clear }
   context.handler:
@@ -284,7 +289,7 @@ services:
       - [setContainer, ['@service_container']]
   default_plugin_manager:
     abstract: true
-    arguments: ['@container.namespaces', '@cache.discovery', '@module_handler']
+    arguments: ['@container.namespaces', '@cache.plugin_collector', '@module_handler']
   module_handler:
     class: Drupal\Core\Extension\ModuleHandler
     arguments: ['%container.modules%', '@cache.bootstrap']
@@ -293,7 +298,7 @@ services:
     arguments: ['@config.factory', '@module_handler', '@state', '@info_parser', '@logger.channel.default', '@asset.css.collection_optimizer', '@config.installer', '@config.manager', '@router.builder']
   entity.manager:
     class: Drupal\Core\Entity\EntityManager
-    arguments: ['@container.namespaces', '@module_handler', '@cache.discovery', '@language_manager', '@string_translation', '@class_resolver', '@typed_data_manager', '@entity.definitions.installed']
+    arguments: ['@container.namespaces', '@module_handler', '@cache.plugin_collector', '@language_manager', '@string_translation', '@class_resolver', '@typed_data_manager', '@entity.definitions.installed']
     parent: container.trait
     tags:
       - { name: plugin_manager_cache_clear }
@@ -313,19 +318,19 @@ services:
     parent: default_plugin_manager
   plugin.manager.field.field_type:
     class: Drupal\Core\Field\FieldTypePluginManager
-    arguments: ['@container.namespaces', '@cache.discovery', '@module_handler']
+    arguments: ['@container.namespaces', '@cache.plugin_collector', '@module_handler']
   plugin.manager.field.widget:
     class: Drupal\Core\Field\WidgetPluginManager
-    arguments: ['@container.namespaces', '@cache.discovery', '@module_handler', '@plugin.manager.field.field_type']
+    arguments: ['@container.namespaces', '@cache.plugin_collector', '@module_handler', '@plugin.manager.field.field_type']
   plugin.manager.field.formatter:
     class: Drupal\Core\Field\FormatterPluginManager
-    arguments: ['@container.namespaces', '@cache.discovery', '@module_handler', '@plugin.manager.field.field_type']
+    arguments: ['@container.namespaces', '@cache.plugin_collector', '@module_handler', '@plugin.manager.field.field_type']
   plugin.manager.archiver:
     class: Drupal\Core\Archiver\ArchiverManager
     parent: default_plugin_manager
   plugin.manager.action:
     class: Drupal\Core\Action\ActionManager
-    arguments: ['@container.namespaces', '@cache.discovery', '@module_handler']
+    arguments: ['@container.namespaces', '@cache.plugin_collector', '@module_handler']
   plugin.manager.menu.link:
     class: Drupal\Core\Menu\MenuLinkManager
     arguments: ['@menu.tree_storage', '@menu_link.static.overrides', '@module_handler']
@@ -343,13 +348,13 @@ services:
     arguments: ['@menu.link_tree', '@entity.manager', '@string_translation']
   plugin.manager.menu.local_action:
     class: Drupal\Core\Menu\LocalActionManager
-    arguments: ['@controller_resolver', '@request_stack', '@router.route_provider', '@module_handler', '@cache.discovery', '@language_manager', '@access_manager', '@current_user']
+    arguments: ['@controller_resolver', '@request_stack', '@router.route_provider', '@module_handler', '@cache.plugin_collector', '@language_manager', '@access_manager', '@current_user']
   plugin.manager.menu.local_task:
     class: Drupal\Core\Menu\LocalTaskManager
-    arguments: ['@controller_resolver', '@request_stack', '@router.route_provider', '@router.builder', '@module_handler', '@cache.discovery', '@language_manager', '@access_manager', '@current_user']
+    arguments: ['@controller_resolver', '@request_stack', '@router.route_provider', '@router.builder', '@module_handler', '@cache.plugin_collector', '@language_manager', '@access_manager', '@current_user']
   plugin.manager.menu.contextual_link:
     class: Drupal\Core\Menu\ContextualLinkManager
-    arguments: ['@controller_resolver', '@module_handler', '@cache.discovery', '@language_manager', '@access_manager', '@current_user', '@request_stack']
+    arguments: ['@controller_resolver', '@module_handler', '@cache.plugin_collector', '@language_manager', '@access_manager', '@current_user', '@request_stack']
   plugin.manager.display_variant:
     class: Drupal\Core\Display\VariantManager
     parent: default_plugin_manager
@@ -852,7 +857,7 @@ services:
       - { name: backend_overridable }
   plugin.manager.mail:
     class: Drupal\Core\Mail\MailManager
-    arguments: ['@container.namespaces', '@cache.discovery', '@module_handler', '@config.factory', '@logger.factory', '@string_translation']
+    arguments: ['@container.namespaces', '@cache.plugin_collector', '@module_handler', '@config.factory', '@logger.factory', '@string_translation']
   plugin.manager.condition:
     class: Drupal\Core\Condition\ConditionManager
     parent: default_plugin_manager
@@ -887,7 +892,7 @@ services:
       - { name: service_collector, tag: breadcrumb_builder, call: addBuilder }
   token:
     class: Drupal\Core\Utility\Token
-    arguments: ['@module_handler', '@cache.discovery', '@language_manager']
+    arguments: ['@module_handler', '@cache.plugin_collector', '@language_manager']
   batch.storage:
     class: Drupal\Core\Batch\BatchStorage
     arguments: ['@database', '@session_manager', '@csrf_token']
@@ -1017,7 +1022,7 @@ services:
     arguments: ['@library.discovery.collector']
   library.discovery.collector:
     class: Drupal\Core\Asset\LibraryDiscoveryCollector
-    arguments: ['@cache.discovery', '@lock', '@library.discovery.parser']
+    arguments: ['@cache.plugin_collector', '@lock', '@library.discovery.parser']
     tags:
       - { name: needs_destruction }
   library.discovery.parser:
diff --git a/core/lib/Drupal/Core/Cache/CacheCollectorBackend.php b/core/lib/Drupal/Core/Cache/CacheCollectorBackend.php
new file mode 100644
index 0000000..b5b9b40
--- /dev/null
+++ b/core/lib/Drupal/Core/Cache/CacheCollectorBackend.php
@@ -0,0 +1,398 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\Cache\CacheCollectorBackend.
+ */
+
+namespace Drupal\Core\Cache;
+
+use Drupal\Core\DestructableInterface;
+use Drupal\Core\Lock\LockBackendInterface;
+
+/**
+ * Class CacheCollectorBackend
+ */
+class CacheCollectorBackend implements CacheBackendInterface, DestructableInterface {
+
+  /**
+   * The cache backend.
+   *
+   * @var \Drupal\Core\Cache\CacheBackendInterface
+   */
+  protected $cacheBackend;
+
+  /**
+   * The lock backend.
+   *
+   * @var \Drupal\Core\Lock\LockBackendInterface
+   */
+  protected $lock;
+
+  /**
+   * The cache id that is used for the cache entry.
+   *
+   * @var string
+   */
+  protected $cid;
+
+  /**
+   * A list of tags that are used for the cache entry.
+   *
+   * @var array
+   */
+  protected $tags;
+
+  /**
+   * An array of keys to add to the cache on service termination.
+   *
+   * @var array
+   */
+  protected $keysToPersist = array();
+
+  /**
+   * An array of keys to remove from the cache on service termination.
+   *
+   * @var array
+   */
+  protected $keysToRemove = array();
+
+  /**
+   * Storage for the data itself.
+   *
+   * @var array
+   */
+  protected $storage = array();
+
+  /**
+   * Stores the cache creation time.
+   *
+   * This is used to check if an invalidated cache item has been overwritten in
+   * the meantime.
+   *
+   * @var int
+   */
+  protected $cacheCreated;
+
+  /**
+   * Flag that indicates of the cache has been invalidated.
+   *
+   * @var bool
+   */
+  protected $cacheInvalidated = FALSE;
+
+  /**
+   * Indicates if the collected cache was already loaded.
+   *
+   * The collected cache is lazy loaded when an entry is set, get or deleted.
+   *
+   * @var bool
+   */
+  protected $cacheLoaded = FALSE;
+
+  /**
+   * Constructs a CacheCollectorBackend.
+   */
+  public function __construct($cid, CacheBackendInterface $cache_backend, LockBackendInterface $lock, array $default_tags = array()) {
+    $this->cid = $cid;
+    $this->cacheBackend = $cache_backend;
+    $this->lock = $lock;
+    $this->tags = $default_tags;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function get($cid, $allow_invalid = FALSE) {
+    $this->lazyLoadCache();
+    if (isset($this->storage[$cid]) || array_key_exists($cid, $this->storage)) {
+      return $this->createCacheObject($this->storage[$cid]);
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getMultiple(&$cids, $allow_invalid = FALSE) {
+    $cache = array();
+    foreach ($cids as $cid) {
+      $cache[$cid] = $this->get($cid, $allow_invalid);
+    }
+    $cids = array_diff($cids, array_keys($cache));
+
+    return $cache;
+  }
+
+
+  /**
+   * {@inheritdoc}
+   */
+  public function set($cid, $data, $expire = Cache::PERMANENT, array $tags = array()) {
+    $item = array(
+      'data' => $data,
+      'expire' => $expire,
+      'tags' => $tags,
+    );
+    $this->setMultiple(array($cid => $item));
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setMultiple(array $items) {
+    $this->lazyLoadCache();
+
+    $deleted_tags = &drupal_static('Drupal\Core\Cache\DatabaseBackend::deletedTags', array());
+    $invalidated_tags = &drupal_static('Drupal\Core\Cache\DatabaseBackend::invalidatedTags', array());
+
+    foreach ($items as $cid => $item) {
+      $item += array(
+        // @todo Ignore this for now.
+        'expire' => CacheBackendInterface::CACHE_PERMANENT,
+        'tags' => array(),
+      );
+
+      Cache::mergeTags($this->tags, array_unique($item['tags']));
+
+      foreach ($item['tags'] as $tag) {
+        if (isset($deleted_tags[$tag])) {
+          unset($deleted_tags[$tag]);
+        }
+        if (isset($invalidated_tags[$tag])) {
+          unset($invalidated_tags[$tag]);
+        }
+      }
+
+      $this->storage[$cid] = $item['data'];
+      $this->persist($cid);
+      // The key might have been marked for deletion.
+      unset($this->keysToRemove[$cid]);
+    }
+
+    $this->invalidateCache();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function delete($cid) {
+    $this->lazyLoadCache();
+    unset($this->storage[$cid]);
+    $this->keysToRemove[$cid] = $cid;
+    // The key might have been marked for persisting.
+    unset($this->keysToPersist[$cid]);
+    $this->invalidateCache();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function deleteMultiple(array $cids) {
+    $this->lazyLoadCache();
+
+    foreach ($cids as $cid) {
+      unset($this->storage[$cid]);
+      $this->keysToRemove[$cid] = $cid;
+      // The key might have been marked for persisting.
+      unset($this->keysToPersist[$cid]);
+    }
+
+    $this->invalidateCache();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function deleteAll() {
+    $this->cacheBackend->delete($this->getCid());
+    $this->reset();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function deleteTags(array $tags) {
+    $this->cacheBackend->deleteTags($tags);
+    $this->reset();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function invalidate($cid) {
+    $this->cacheBackend->invalidate($this->getCid());
+    $this->reset();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function invalidateAll() {
+    $this->cacheBackend->invalidate($this->getCid());
+    $this->reset();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function invalidateMultiple(array $cids) {
+    $this->cacheBackend->invalidate($this->getCid());
+  }
+
+  /**
+   * Performs garbage collection on a cache bin.
+   *
+   * The backend may choose to delete expired or invalidated items.
+   */
+  public function garbageCollection() {
+    $this->cacheBackend->garbageCollection();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function invalidateTags(array $tags) {
+    $this->cacheBackend->invalidateTags($tags);
+    $this->reset();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function removeBin() {
+    $this->cacheBackend->delete($this->getCid());
+    $this->reset();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function destruct() {
+    $this->updateCache();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function reset() {
+    $this->storage = array();
+    $this->keysToPersist = array();
+    $this->keysToRemove = array();
+    $this->cacheLoaded = FALSE;
+  }
+
+  /**
+   * Loads the cache if not already done.
+   */
+  protected function lazyLoadCache() {
+    if ($this->cacheLoaded) {
+      return;
+    }
+    // The cache was not yet loaded, set flag to TRUE.
+    $this->cacheLoaded = TRUE;
+
+    if ($cache = $this->cacheBackend->get($this->getCid())) {
+      $this->cacheCreated = $cache->created;
+      $this->storage = $cache->data;
+      $this->tags = $cache->tags;
+    }
+  }
+
+  /**
+   * Flags an offset value to be written to the persistent cache.
+   *
+   * @param string $key
+   *   The key that was requested.
+   * @param bool $persist
+   *   (optional) Whether the offset should be persisted or not, defaults to
+   *   TRUE. When called with $persist = FALSE the offset will be unflagged so
+   *   that it will not be written at the end of the request.
+   */
+  protected function persist($key, $persist = TRUE) {
+    $this->keysToPersist[$key] = $persist;
+  }
+
+  /**
+   * Writes a value to the persistent cache immediately.
+   *
+   * @param bool $lock
+   *   (optional) Whether to acquire a lock before writing to cache. Defaults to
+   *   TRUE.
+   */
+  protected function updateCache($lock = TRUE) {
+    $data = array();
+    foreach ($this->keysToPersist as $offset => $persist) {
+      if ($persist) {
+        $data[$offset] = $this->storage[$offset];
+      }
+    }
+    if (empty($data) && empty($this->keysToRemove)) {
+      return;
+    }
+
+    // Lock cache writes to help avoid stampedes.
+    $cid = $this->getCid();
+    $lock_name = $cid . ':' . __CLASS__;
+    if (!$lock || $this->lock->acquire($lock_name)) {
+      // Set and delete operations invalidate the cache item. Try to also load
+      // an eventually invalidated cache entry, only update an invalidated cache
+      // entry if the creation date did not change as this could result in an
+      // inconsistent cache.
+      if ($cache = $this->cacheBackend->get($cid, $this->cacheInvalidated)) {
+        if ($this->cacheInvalidated && $cache->created != $this->cacheCreated) {
+          // We have invalidated the cache in this request and got a different
+          // cache entry. Do not attempt to overwrite data that might have been
+          // changed in a different request. We'll let the cache rebuild in
+          // later requests.
+          $this->cacheBackend->delete($cid);
+          $this->lock->release($lock_name);
+          return;
+        }
+        $data = array_merge($cache->data, $data);
+      }
+      // Remove keys marked for deletion.
+      foreach ($this->keysToRemove as $delete_key) {
+        unset($data[$delete_key]);
+      }
+      $this->cacheBackend->set($cid, $data, Cache::PERMANENT, $this->tags);
+      if ($lock) {
+        $this->lock->release($lock_name);
+      }
+    }
+
+    $this->keysToPersist = array();
+    $this->keysToRemove = array();
+  }
+
+  /**
+   * Invalidate the cache.
+   */
+  protected function invalidateCache() {
+    // Invalidate the cache to make sure that other requests immediately see the
+    // deletion before this request is terminated.
+    $this->cacheBackend->invalidate($this->getCid());
+    $this->cacheInvalidated = TRUE;
+  }
+
+  /**
+   * Gets the cache ID.
+   *
+   * @return string
+   */
+  protected function getCid() {
+    return $this->cid;
+  }
+
+  /**
+   *
+   */
+  protected function createCacheObject($data) {
+    return (object) array(
+      'data' => $data,
+      'created' => $this->cacheCreated,
+      'expire' => Cache::PERMANENT,
+      'tags' => $this->tags,
+    );
+  }
+
+}
diff --git a/core/modules/views/views.services.yml b/core/modules/views/views.services.yml
index b66568f..fb90459 100644
--- a/core/modules/views/views.services.yml
+++ b/core/modules/views/views.services.yml
@@ -1,61 +1,61 @@
 services:
   plugin.manager.views.access:
     class: Drupal\views\Plugin\ViewsPluginManager
-    arguments: [access, '@container.namespaces', '@cache.discovery', '@module_handler']
+    arguments: [access, '@container.namespaces', '@cache.plugin_collector', '@module_handler']
   plugin.manager.views.area:
     class: Drupal\views\Plugin\ViewsHandlerManager
-    arguments: [area, '@container.namespaces', '@views.views_data', '@cache.discovery', '@module_handler']
+    arguments: [area, '@container.namespaces', '@views.views_data', '@cache.plugin_collector', '@module_handler']
   plugin.manager.views.argument:
     class: Drupal\views\Plugin\ViewsHandlerManager
-    arguments: [argument, '@container.namespaces', '@views.views_data', '@cache.discovery', '@module_handler']
+    arguments: [argument, '@container.namespaces', '@views.views_data', '@cache.plugin_collector', '@module_handler']
   plugin.manager.views.argument_default:
     class: Drupal\views\Plugin\ViewsPluginManager
-    arguments: [argument_default, '@container.namespaces', '@cache.discovery', '@module_handler']
+    arguments: [argument_default, '@container.namespaces', '@cache.plugin_collector', '@module_handler']
   plugin.manager.views.argument_validator:
     class: Drupal\views\Plugin\ViewsPluginManager
-    arguments: [argument_validator, '@container.namespaces', '@cache.discovery', '@module_handler']
+    arguments: [argument_validator, '@container.namespaces', '@cache.plugin_collector', '@module_handler']
   plugin.manager.views.cache:
     class: Drupal\views\Plugin\ViewsPluginManager
-    arguments: [cache, '@container.namespaces', '@cache.discovery', '@module_handler']
+    arguments: [cache, '@container.namespaces', '@cache.plugin_collector', '@module_handler']
   plugin.manager.views.display_extender:
     class: Drupal\views\Plugin\ViewsPluginManager
-    arguments: [display_extender, '@container.namespaces', '@cache.discovery', '@module_handler']
+    arguments: [display_extender, '@container.namespaces', '@cache.plugin_collector', '@module_handler']
   plugin.manager.views.display:
     class: Drupal\views\Plugin\ViewsPluginManager
-    arguments: [display, '@container.namespaces', '@cache.discovery', '@module_handler']
+    arguments: [display, '@container.namespaces', '@cache.plugin_collector', '@module_handler']
   plugin.manager.views.exposed_form:
     class: Drupal\views\Plugin\ViewsPluginManager
-    arguments: [exposed_form, '@container.namespaces', '@cache.discovery', '@module_handler']
+    arguments: [exposed_form, '@container.namespaces', '@cache.plugin_collector', '@module_handler']
   plugin.manager.views.field:
     class: Drupal\views\Plugin\ViewsHandlerManager
-    arguments: [field, '@container.namespaces', '@views.views_data', '@cache.discovery', '@module_handler']
+    arguments: [field, '@container.namespaces', '@views.views_data', '@cache.plugin_collector', '@module_handler']
   plugin.manager.views.filter:
     class: Drupal\views\Plugin\ViewsHandlerManager
-    arguments: [filter, '@container.namespaces', '@views.views_data', '@cache.discovery', '@module_handler']
+    arguments: [filter, '@container.namespaces', '@views.views_data', '@cache.plugin_collector', '@module_handler']
   plugin.manager.views.join:
     class: Drupal\views\Plugin\ViewsHandlerManager
-    arguments: [join, '@container.namespaces', '@views.views_data', '@cache.discovery', '@module_handler']
+    arguments: [join, '@container.namespaces', '@views.views_data', '@cache.plugin_collector', '@module_handler']
   plugin.manager.views.pager:
     class: Drupal\views\Plugin\ViewsPluginManager
-    arguments: [pager, '@container.namespaces', '@cache.discovery', '@module_handler']
+    arguments: [pager, '@container.namespaces', '@cache.plugin_collector', '@module_handler']
   plugin.manager.views.query:
     class: Drupal\views\Plugin\ViewsPluginManager
-    arguments: [query, '@container.namespaces', '@cache.discovery', '@module_handler']
+    arguments: [query, '@container.namespaces', '@cache.plugin_collector', '@module_handler']
   plugin.manager.views.relationship:
     class: Drupal\views\Plugin\ViewsHandlerManager
-    arguments: [relationship, '@container.namespaces', '@views.views_data', '@cache.discovery', '@module_handler']
+    arguments: [relationship, '@container.namespaces', '@views.views_data', '@cache.plugin_collector', '@module_handler']
   plugin.manager.views.row:
     class: Drupal\views\Plugin\ViewsPluginManager
-    arguments: [row, '@container.namespaces', '@cache.discovery', '@module_handler']
+    arguments: [row, '@container.namespaces', '@cache.plugin_collector', '@module_handler']
   plugin.manager.views.sort:
     class: Drupal\views\Plugin\ViewsHandlerManager
-    arguments: [sort, '@container.namespaces', '@views.views_data', '@cache.discovery', '@module_handler']
+    arguments: [sort, '@container.namespaces', '@views.views_data', '@cache.plugin_collector', '@module_handler']
   plugin.manager.views.style:
     class: Drupal\views\Plugin\ViewsPluginManager
-    arguments: [style, '@container.namespaces', '@cache.discovery', '@module_handler']
+    arguments: [style, '@container.namespaces', '@cache.plugin_collector', '@module_handler']
   plugin.manager.views.wizard:
     class: Drupal\views\Plugin\ViewsPluginManager
-    arguments: [wizard, '@container.namespaces', '@cache.discovery', '@module_handler']
+    arguments: [wizard, '@container.namespaces', '@cache.plugin_collector', '@module_handler']
   views.views_data:
     class: Drupal\views\ViewsData
     arguments: ['@cache.discovery', '@config.factory', '@module_handler', '@language_manager']