From: Aaron Schulz <aschulz@wikimedia.org>
Date: Thu, 3 Jan 2013 00:56:00 +0000 (-0800)
Subject: Added $wgMaxBacklinksInvalidate to avoid massive html cache invalidation.
X-Git-Tag: 1.31.0-rc.0~21126
X-Git-Url: https://git.cyclocoop.org/%242?a=commitdiff_plain;h=b23188b8adc15c477b1cecc138af2f35c95d82e8;p=lhc%2Fweb%2Fwiklou.git

Added $wgMaxBacklinksInvalidate to avoid massive html cache invalidation.

Change-Id: I4fadded0e351883a907d307d64af31cdc6164240
---

diff --git a/includes/DefaultSettings.php b/includes/DefaultSettings.php
index 3fe76fc264..aae3d5a381 100644
--- a/includes/DefaultSettings.php
+++ b/includes/DefaultSettings.php
@@ -6169,6 +6169,15 @@ $wgUpdateRowsPerJob = 500;
  */
 $wgUpdateRowsPerQuery = 100;
 
+/**
+ * Do not purge all the pages that use a page when it is edited
+ * if there are more than this many such pages. This is used to
+ * avoid invalidating a large portion of the squid/parser cache.
+ *
+ * This setting should factor in any squid/parser cache expiry settings.
+ */
+$wgMaxBacklinksInvalidate = false;
+
 /** @} */ # End job queue }
 
 /************************************************************************//**
diff --git a/includes/cache/HTMLCacheUpdate.php b/includes/cache/HTMLCacheUpdate.php
index 791ae3e8b9..8962cf345b 100644
--- a/includes/cache/HTMLCacheUpdate.php
+++ b/includes/cache/HTMLCacheUpdate.php
@@ -46,6 +46,8 @@ class HTMLCacheUpdate implements DeferrableUpdate {
 	}
 
 	public function doUpdate() {
+		global $wgMaxBacklinksInvalidate;
+
 		wfProfileIn( __METHOD__ );
 
 		$job = new HTMLCacheUpdateJob(
@@ -58,7 +60,9 @@ class HTMLCacheUpdate implements DeferrableUpdate {
 		);
 
 		$count = $this->mTitle->getBacklinkCache()->getNumLinks( $this->mTable, 200 );
-		if ( $count >= 200 ) { // many backlinks
+		if ( $wgMaxBacklinksInvalidate !== false && $count > $wgMaxBacklinksInvalidate ) {
+			wfDebug( "Skipped HTML cache invalidation of {$this->mTitle->getPrefixedText}." );
+		} elseif ( $count >= 200 ) { // many backlinks
 			JobQueueGroup::singleton()->push( $job );
 			JobQueueGroup::singleton()->deduplicateRootJob( $job );
 		} else { // few backlinks ($count might be off even if 0)