// Initialize the request object in $wgRequest
$wgRequest = RequestContext::getMain()->getRequest(); // BackCompat
-// Set user IP/agent information for causal consistency purposes.
-// The cpPosIndex cookie has no prefix and is set by MediaWiki::preOutputCommit().
-$cpPosIndex = $wgRequest->getInt( 'cpPosIndex', (int)$wgRequest->getCookie( 'cpPosIndex', '' ) );
+// Set user IP/agent information for agent session consistency purposes
MediaWikiServices::getInstance()->getDBLoadBalancerFactory()->setRequestInfo( [
'IPAddress' => $wgRequest->getIP(),
'UserAgent' => $wgRequest->getHeader( 'User-Agent' ),
'ChronologyProtection' => $wgRequest->getHeader( 'ChronologyProtection' ),
- 'ChronologyPositionIndex' => $cpPosIndex
+ // The cpPosIndex cookie has no prefix and is set by MediaWiki::preOutputCommit()
+ 'ChronologyPositionIndex' =>
+ $wgRequest->getInt( 'cpPosIndex', (int)$wgRequest->getCookie( 'cpPosIndex', '' ) )
] );
-// Make sure that caching does not compromise the consistency improvements
-if ( $cpPosIndex ) {
+// Make sure that object caching does not undermine the ChronologyProtector improvements
+if ( $wgRequest->getCookie( 'UseDC', '' ) === 'master' ) {
+ // The user is pinned to the primary DC, meaning that they made recent changes which should
+ // be reflected in their subsequent web requests. Avoid the use of interim cache keys because
+ // they use a blind TTL and could be stale if an object changes twice in a short time span.
MediaWikiServices::getInstance()->getMainWANObjectCache()->useInterimHoldOffCaching( false );
}
-unset( $cpPosIndex );
// Useful debug output
if ( $wgCommandLineMode ) {