diff --git a/core/lib/Drupal/Core/Cache/DatabaseBackend.php b/core/lib/Drupal/Core/Cache/DatabaseBackend.php
index 016fbdd..b50aec9 100644
--- a/core/lib/Drupal/Core/Cache/DatabaseBackend.php
+++ b/core/lib/Drupal/Core/Cache/DatabaseBackend.php
@@ -179,7 +179,6 @@ protected function doSet($cid, $data, $expire, $tags) {
     }
     $checksum = $this->checksumTags($flat_tags);
     $fields = array(
-      'serialized' => 0,
       'created' => REQUEST_TIME,
       'expire' => $expire,
       'tags' => implode(' ', $flat_tags),
@@ -213,6 +212,8 @@ public function setMultiple(array $items) {
     $transaction = $this->connection->startTransaction();
 
     try {
+      // Delete all items first so we can do one insert. Rather than mulitple
+      // merge queries.
       $this->deleteMultiple(array_keys($items));
 
       $query = $this->connection
diff --git a/core/modules/system/lib/Drupal/system/Tests/Cache/GenericCacheBackendUnitTestBase.php b/core/modules/system/lib/Drupal/system/Tests/Cache/GenericCacheBackendUnitTestBase.php
index da28fc4..9002314 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Cache/GenericCacheBackendUnitTestBase.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Cache/GenericCacheBackendUnitTestBase.php
@@ -296,7 +296,7 @@ public function testGetMultiple() {
     $this->assertFalse(in_array('test19', $cids), "Added cache id test19 is not in cids array.");
   }
 
-   /**
+  /**
    * Tests \Drupal\Core\Cache\CacheBackendInterface::setMultiple().
    */
   public function testSetMultiple() {