dev/core#3814 Use fastArray cache for extension system

This reduces repetitive array hits on the Redis or other cache as they
are stored in the php layer. The Redis hits are not slow - but the
serializing & unserializing is so this is a performance improvement

diff --git a/CRM/Extension/System.php b/CRM/Extension/System.php
index 99a920de37e25a3165be28b0781c9c0214af433e..4361314395afd1580be39c529dc58eb8f5e450bb 100644 (file)
--- a/CRM/Extension/System.php
+++ b/CRM/Extension/System.php
@@ -251,7 +251,10 @@ class CRM_Extension_System {
   }
 
   /**
+   * Get the cache object.
+   *
    * @return CRM_Utils_Cache_Interface
+   * @throws \CRM_Core_Exception
    */
   public function getCache() {
     if ($this->cache === NULL) {
@@ -261,6 +264,7 @@ class CRM_Extension_System {
         'name' => $cacheGroup,
         'type' => ['*memory*', 'SqlGroup', 'ArrayCache'],
         'prefetch' => TRUE,
+        'withArray' => 'fast',
       ]);
     }
     return $this->cache;