BacklinkCache: Remove use of ProcessCacheLRU

Follows-up af89b09a06 and e40a90f0bc, and general phasing out
of MapCacheLRU and ProcessCacheLRU.

Use of ProcessCacheLRU seems redundant in this case as it is
essentially just a keyed singleton.

Change-Id: I7cc84cf6c76ecc422ea337dba2d216c3d7ebf281

diff --git a/includes/cache/BacklinkCache.php b/includes/cache/BacklinkCache.php
index 1323c70..c04a22a 100644 (file)
--- a/includes/cache/BacklinkCache.php
+++ b/includes/cache/BacklinkCache.php
@@ -40,8 +40,8 @@
  * Introduced by r47317
  */
 class BacklinkCache {
-       /** @var ProcessCacheLRU */
-       protected static $cache;
+       /** @var BacklinkCache */
+       protected static $instance;
 
        /**
         * Multi dimensions array representing batches. Keys are:
@@ -101,15 +101,10 @@ class BacklinkCache {
         * @return BacklinkCache
         */
        public static function get( Title $title ) {
-               if ( !self::$cache ) { // init cache
-                       self::$cache = new ProcessCacheLRU( 1 );
+               if ( !self::$instance || !self::$instance->title->equals( $title ) ) {
+                       self::$instance = new self( $title );
                }
-               $dbKey = $title->getPrefixedDBkey();
-               if ( !self::$cache->has( $dbKey, 'obj', 3600 ) ) {
-                       self::$cache->set( $dbKey, 'obj', new self( $title ) );
-               }
-
-               return self::$cache->get( $dbKey, 'obj' );
+               return self::$instance;
        }
 
        /**