48      * @param int $year Year
52     private static function getMonthCacheKey($namespace, $year, $month) {  argument
54         return sprintf('events_%s_%04d_%02d', $ns, $year, $month);
71      * @param int $year Year
76     public static function getMonthEvents($namespace, $year, $month, $ttl = self::DEFAULT_TTL) {  argument
77         $key = self::getMonthCacheKey($namespace, $year, $month);
118      * @param int $year Year
123     public static function setMonthEvents($namespace, $year, $month, array $events) {  argument
124         $key = self::getMonthCacheKey($namespace, $year, $month);
150      * @param int $year Year
153     public static function invalidateMonth($namespace, $year, $month) {  argument
154         $key = self::getMonthCacheKey($namespace, $year, $month);