diff --git a/core/core.services.yml b/core/core.services.yml
index 5e63508..074c639 100644
--- a/core/core.services.yml
+++ b/core/core.services.yml
@@ -207,7 +207,7 @@ services:
     tags:
       - { name: cache.bin }
     factory: cache_factory:get
-    arguments: [default]
+    arguments: [default, 86400]
   cache.entity:
     class: Drupal\Core\Cache\CacheBackendInterface
     tags:
diff --git a/core/lib/Drupal/Core/Cache/ApcuBackendFactory.php b/core/lib/Drupal/Core/Cache/ApcuBackendFactory.php
index dae24dc..c408625 100644
--- a/core/lib/Drupal/Core/Cache/ApcuBackendFactory.php
+++ b/core/lib/Drupal/Core/Cache/ApcuBackendFactory.php
@@ -54,16 +54,14 @@ public function __construct($root, $site_path, CacheTagsChecksumInterface $check
   }
 
   /**
-   * Gets ApcuBackend for the specified cache bin.
-   *
-   * @param $bin
-   *   The cache bin for which the object is created.
-   *
-   * @return \Drupal\Core\Cache\ApcuBackend
-   *   The cache backend object for the specified cache bin.
+   * {@inheritdoc}
    */
-  public function get($bin) {
-    return new $this->backendClass($bin, $this->sitePrefix, $this->checksumProvider);
+  public function get($bin, $minimum_permanent_ttl = CacheBackendInterface::CACHE_PERMANENT) {
+    $class = new $this->backendClass($bin, $this->sitePrefix, $this->checksumProvider);
+    if ($class instanceOf ConfigurablePermanentTtlInterface) {
+      $class->setMinimumPermanentTtl($minimum_permanent_ttl);
+    }
+    return $class;
   }
 
 }
diff --git a/core/lib/Drupal/Core/Cache/CacheFactory.php b/core/lib/Drupal/Core/Cache/CacheFactory.php
index a5acf7c..1fb2134 100644
--- a/core/lib/Drupal/Core/Cache/CacheFactory.php
+++ b/core/lib/Drupal/Core/Cache/CacheFactory.php
@@ -53,21 +53,9 @@ public function __construct(Settings $settings, array $default_bin_backends = ar
   }
 
   /**
-   * Instantiates a cache backend class for a given cache bin.
-   *
-   * By default, this returns an instance of the
-   * Drupal\Core\Cache\DatabaseBackend class.
-   *
-   * Classes implementing Drupal\Core\Cache\CacheBackendInterface can register
-   * themselves both as a default implementation and for specific bins.
-   *
-   * @param string $bin
-   *   The cache bin for which a cache backend object should be returned.
-   *
-   * @return \Drupal\Core\Cache\CacheBackendInterface
-   *   The cache backend object associated with the specified bin.
+   * {@inheritdoc}
    */
-  public function get($bin) {
+  public function get($bin, $minimum_permanent_ttl = 0) {
     $cache_settings = $this->settings->get('cache');
     if (isset($cache_settings['bins'][$bin])) {
       $service_name = $cache_settings['bins'][$bin];
@@ -81,7 +69,11 @@ public function get($bin) {
     else {
       $service_name = 'cache.backend.database';
     }
-    return $this->container->get($service_name)->get($bin);
+    $class = $this->container->get($service_name)->get($bin);
+    if ($class instanceof ConfigurablePermanentTtlInterface) {
+      $class->setMinimumPermanentTtl($minimum_permanent_ttl);
+    }
+    return $class;
   }
 
 }
diff --git a/core/lib/Drupal/Core/Cache/CacheFactoryInterface.php b/core/lib/Drupal/Core/Cache/CacheFactoryInterface.php
index b149373..5ee039e 100644
--- a/core/lib/Drupal/Core/Cache/CacheFactoryInterface.php
+++ b/core/lib/Drupal/Core/Cache/CacheFactoryInterface.php
@@ -17,10 +17,12 @@
    *
    * @param string $bin
    *   The cache bin for which a cache backend object should be returned.
+   * @param int $minimum_permanent_ttl
+   *   The minimum ttl for permanent cache items.
    *
    * @return \Drupal\Core\Cache\CacheBackendInterface
    *   The cache backend object associated with the specified bin.
    */
-  public function get($bin);
+  public function get($bin, $minimum_permanent_ttl = CacheBackendInterface::CACHE_PERMANENT);
 
 }
diff --git a/core/lib/Drupal/Core/Cache/ChainedFastBackendFactory.php b/core/lib/Drupal/Core/Cache/ChainedFastBackendFactory.php
index ca38ca0..4fd8cce 100644
--- a/core/lib/Drupal/Core/Cache/ChainedFastBackendFactory.php
+++ b/core/lib/Drupal/Core/Cache/ChainedFastBackendFactory.php
@@ -68,21 +68,15 @@ public function __construct(Settings $settings = NULL, $consistent_service_name
   }
 
   /**
-   * Instantiates a chained, fast cache backend class for a given cache bin.
-   *
-   * @param string $bin
-   *   The cache bin for which a cache backend object should be returned.
-   *
-   * @return \Drupal\Core\Cache\CacheBackendInterface
-   *   The cache backend object associated with the specified bin.
+   * {@inheritdoc}
    */
-  public function get($bin) {
+  public function get($bin, $minimum_permanent_ttl = CacheBackendInterface::CACHE_PERMANENT) {
     // Use the chained backend only if there is a fast backend available;
     // otherwise, just return the consistent backend directly.
     if (isset($this->fastServiceName)) {
       return new ChainedFastBackend(
-        $this->container->get($this->consistentServiceName)->get($bin),
-        $this->container->get($this->fastServiceName)->get($bin),
+        $this->container->get($this->consistentServiceName)->get($bin, $minimum_permanent_ttl),
+        $this->container->get($this->fastServiceName)->get($bin, $minimum_permanent_ttl),
         $bin
       );
     }
diff --git a/core/lib/Drupal/Core/Cache/DatabaseBackend.php b/core/lib/Drupal/Core/Cache/DatabaseBackend.php
index db5c2f0..b8dd314 100644
--- a/core/lib/Drupal/Core/Cache/DatabaseBackend.php
+++ b/core/lib/Drupal/Core/Cache/DatabaseBackend.php
@@ -19,7 +19,7 @@
  *
  * @ingroup cache
  */
-class DatabaseBackend implements CacheBackendInterface {
+class DatabaseBackend implements CacheBackendInterface, ConfigurablePermanentTtlInterface {
 
   /**
    * @var string
@@ -42,6 +42,11 @@ class DatabaseBackend implements CacheBackendInterface {
   protected $checksumProvider;
 
   /**
+   * The minimum permanent TTL.
+   */
+  protected $minimumPermanentTtl = CacheBackendInterface::CACHE_PERMANENT;
+
+  /**
    * Constructs a DatabaseBackend object.
    *
    * @param \Drupal\Core\Database\Connection $connection
@@ -194,8 +199,10 @@ protected function doSetMultiple(array $items) {
     $values = array();
 
     foreach ($items as $cid => $item) {
+      if (!isset($item['expire']) || $item['expire'] === CacheBackendInterface::CACHE_PERMANENT)  {
+        $item['expire'] = $this->minimumPermanentTtl;
+      }
       $item += array(
-        'expire' => CacheBackendInterface::CACHE_PERMANENT,
         'tags' => array(),
       );
 
@@ -356,6 +363,13 @@ public function removeBin() {
   }
 
   /**
+   * {@inheritdoc}
+   */
+  public function setMinimumPermanentTtl($ttl) {
+    $this->minimumPermanentTtl = $ttl;
+  }
+
+  /**
    * Check if the cache bin exists and create it if not.
    */
   protected function ensureBinExists() {
diff --git a/core/lib/Drupal/Core/Cache/DatabaseBackendFactory.php b/core/lib/Drupal/Core/Cache/DatabaseBackendFactory.php
index 59b0b22..ee85b3a 100644
--- a/core/lib/Drupal/Core/Cache/DatabaseBackendFactory.php
+++ b/core/lib/Drupal/Core/Cache/DatabaseBackendFactory.php
@@ -39,16 +39,12 @@ function __construct(Connection $connection, CacheTagsChecksumInterface $checksu
   }
 
   /**
-   * Gets DatabaseBackend for the specified cache bin.
-   *
-   * @param $bin
-   *   The cache bin for which the object is created.
-   *
-   * @return \Drupal\Core\Cache\DatabaseBackend
-   *   The cache backend object for the specified cache bin.
+   * {@inheritdoc}
    */
-  function get($bin) {
-    return new DatabaseBackend($this->connection, $this->checksumProvider, $bin);
+  function get($bin, $minimum_permanent_ttl = CacheBackendInterface::CACHE_PERMANENT) {
+    $class =  new DatabaseBackend($this->connection, $this->checksumProvider, $bin);
+    $class->setMinimumPermanentTtl($minimum_permanent_ttl);
+    return $class;
   }
 
 }
diff --git a/core/lib/Drupal/Core/Cache/MemoryBackendFactory.php b/core/lib/Drupal/Core/Cache/MemoryBackendFactory.php
index 53e5b07..d4f8fe2 100644
--- a/core/lib/Drupal/Core/Cache/MemoryBackendFactory.php
+++ b/core/lib/Drupal/Core/Cache/MemoryBackendFactory.php
@@ -19,7 +19,7 @@ class MemoryBackendFactory implements CacheFactoryInterface {
   /**
    * {@inheritdoc}
    */
-  function get($bin) {
+  function get($bin, $minimum_permanent_ttl = CacheBackendInterface::CACHE_PERMANENT) {
     if (!isset($this->bins[$bin])) {
       $this->bins[$bin] = new MemoryBackend($bin);
     }