const READ_VERIFIED = 2; // promise that caller can tell when keys are stale
/** Bitfield constants for set()/merge() */
const WRITE_SYNC = 1; // synchronously write to all locations for replicated stores
+ const WRITE_CACHE_ONLY = 2; // Only change state of the in-memory cache
public function __construct( array $params = array() ) {
if ( isset( $params['logger'] ) ) {