From 6eba3f283dd45cfad5b03d3127ab01c96f847af0 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Niklas=20Laxstr=C3=B6m?= <nikerabbit@users.mediawiki.org>
Date: Sun, 27 Apr 2008 14:37:37 +0000
Subject: [PATCH] * Cache fallbacks separately to avoid loading whole
 localisations

---
 languages/Language.php | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/languages/Language.php b/languages/Language.php
index 66cb762534..ab5a81a85d 100644
--- a/languages/Language.php
+++ b/languages/Language.php
@@ -176,8 +176,7 @@ class Language {
 	}
 
 	function getFallbackLanguageCode() {
-		$this->load();
-		return $this->fallback;
+		return self::getFallbackFor( $this->mCode );
 	}
 
 	/**
@@ -2055,10 +2054,12 @@ class Language {
 
 			# Try the global cache
 			$memcKey = wfMemcKey('localisation', $code );
+			$fbMemcKey = wfMemcKey('fallback', $cache['fallback'] );
 			$cache = $wgMemc->get( $memcKey );
 			if ( $cache ) {
 				if ( self::isLocalisationOutOfDate( $cache ) ) {
 					$wgMemc->delete( $memcKey );
+					$wgMemc->delete( $fbMemcKey );
 					$cache = false;
 					wfDebug( "Language::loadLocalisation(): localisation cache for $code had expired\n" );
 				} else {
@@ -2147,6 +2148,7 @@ class Language {
 		self::$mLocalisationCache[$code] = $cache;
 		if ( !$disableCache ) {
 			$wgMemc->set( $memcKey, $cache );
+			$wgMemc->set( $fbMemcKey, $cache['fallback'] );
 		}
 
 		wfProfileOut( __METHOD__ );
@@ -2180,8 +2182,19 @@ class Language {
 	 * Get the fallback for a given language
 	 */
 	static function getFallbackFor( $code ) {
+		global $wgMemc;
+		$memcKey = wfMemcKey('fallback', $code );
+		$fbcode = $wgMemc->get( $memcKey );
+
+		if ( $fbcode !== null ) {
+			wfDebug( __METHOD__ . ": got fallback for $code from memc: $fbcode\n" );
+			return $fbcode;
+		}
+		
 		self::loadLocalisation( $code );
-		return self::$mLocalisationCache[$code]['fallback'];
+		$fbcode = self::$mLocalisationCache[$code]['fallback'];
+		$wgMemc->set( $memcKey, $fbcode );
+		return $fbcode;
 	}
 
 	/** 
-- 
2.20.1