Reduce contention of getScopedLockAndFlush() callers by using the DB domain in the key

[lhc/web/wiklou.git] / includes / user / UserGroupMembership.php

diff --git a/includes/user/UserGroupMembership.php b/includes/user/UserGroupMembership.php
index e06df9f..170e6a0 100644 (file)
--- a/includes/user/UserGroupMembership.php
+++ b/includes/user/UserGroupMembership.php
@@ -250,7 +250,7 @@ class UserGroupMembership {
                $ticket = $lbFactory->getEmptyTransactionTicket( __METHOD__ );
                $dbw = $services->getDBLoadBalancer()->getConnection( DB_MASTER );
 
-               $lockKey = $dbw->getDomainID() . ':usergroups-prune'; // specific to this wiki
+               $lockKey = "{$dbw->getDomainID()}:UserGroupMembership:purge"; // per-wiki
                $scopedLock = $dbw->getScopedLockAndFlush( $lockKey, __METHOD__, 0 );
                if ( !$scopedLock ) {
                        return false; // already running