$key = wfMemcKey( 'interwiki', $prefix );
$mc = $wgMemc->get( $key );
$iw = false;
- if( $mc && is_array( $mc ) ){ // is_array is hack for old keys
+ if( $mc && is_array( $mc ) ) { // is_array is hack for old keys
$iw = Interwiki::loadFromArray( $mc );
if( $iw ){
return $iw;
}
+ } else if( $mc === 0 ) {
+ return false; // negative result cached
}
-
$db = wfGetDB( DB_SLAVE );
-
$row = $db->fetchRow( $db->select( 'interwiki', '*', array( 'iw_prefix' => $prefix ),
__METHOD__ ) );
$iw = Interwiki::loadFromArray( $row );
- if ( $iw ) {
+ if( $iw ) {
$mc = array( 'iw_url' => $iw->mURL, 'iw_local' => $iw->mLocal, 'iw_trans' => $iw->mTrans );
$wgMemc->add( $key, $mc );
return $iw;
+ } else {
+ # Pages like "Command & Conquer 3: Kane's Wrath" may keep checking
+ # the prefix. Cache the negative result to avoid extra db hits.
+ $wgMemc->add( $key, 0 );
}
-
return false;
}