Quick script to clean the entries in memcached for text saved today after the disk...

diff --git a/maintenance/purgeStaleMemcachedText.php b/maintenance/purgeStaleMemcachedText.php
new file mode 100644 (file)
index 0000000..ccc94aa
--- /dev/null
+++ b/maintenance/purgeStaleMemcachedText.php
@@ -0,0 +1,19 @@
+<?php
+
+require_once( dirname( __FILE__ ) . '/commandLine.inc' );
+
+function purgeStaleMemcachedText() {
+       global $wgMemc;
+       $db = wfGetDB( DB_MASTER );
+       $maxTextId = $db->selectField( 'text', 'max(old_id)' );
+       $latestReplicatedTextId = $db->selectField( array( 'revision','recentchanges'), 'rev_text_id', array( 'rev_id = rc_this_oldid', "rc_timestamp < '201012250630'" ) );
+       $latestReplicatedTextId -= 100; # A bit of paranoia
+
+       for ( $i = $latestReplicatedTextId; $i < $maxTextId; $i++ ) {
+               $key = wfMemcKey( 'revisiontext', 'textid', $i++ );
+               $wgMemc->delete( $key );
+       }
+}
+
+purgeStaleMemcachedText();
+