diff --git i/lib/db/caches.php w/lib/db/caches.php
index d991e8418e1..99b998c9b50 100644
--- i/lib/db/caches.php
+++ w/lib/db/caches.php
@@ -526,6 +526,12 @@ $definitions = array(
         'datasource' => '\core_course\cache\course_image',
     ],
 
+    // Cache for url unfurl.
+    'unfurl' => [
+        'mode'  => cache_store::MODE_APPLICATION,
+        'ttl'   => 259200,
+    ],
+
     // Cache the course categories where the user has access the content bank.
     'contentbank_allowed_categories' => [
         'mode' => cache_store::MODE_SESSION,