diff --git a/core/lib/Drupal/Core/KeyValueStore/KeyValueCacheDecorator.php b/core/lib/Drupal/Core/KeyValueStore/KeyValueCacheDecorator.php
index 83cdb90..ca0f9bd 100644
--- a/core/lib/Drupal/Core/KeyValueStore/KeyValueCacheDecorator.php
+++ b/core/lib/Drupal/Core/KeyValueStore/KeyValueCacheDecorator.php
@@ -82,7 +82,8 @@ public function setMultiple(array $data) {
   public function set($key, $value) {
     $this->keyValueStore->set($key, $value);
     $this->offsetSet($key, $value);
-    $this->persist($key);
+    // Immediately update the cache.
+    $this->setData(array('key' => $value));
   }
 
 }