+ if ( $exptime == 0 ) {
+ $result = $conn->persist( $key );
+ $this->logRequest( 'persist', $key, $server, $result );
+ } elseif ( $relative ) {
+ $result = $conn->expire( $key, $this->convertToRelative( $exptime ) );
+ $this->logRequest( 'expire', $key, $server, $result );
+ } else {
+ $result = $conn->expireAt( $key, $this->convertToExpiry( $exptime ) );
+ $this->logRequest( 'expireAt', $key, $server, $result );
+ }