48      * @param string $namespace Namespace filter
53     private static function getMonthCacheKey($namespace, $year, $month) {  argument
54         $ns = preg_replace('/[^a-zA-Z0-9_-]/', '_', $namespace ?: 'default');
71      * @param string $namespace Namespace filter
77     public static function getMonthEvents($namespace, $year, $month, $ttl = self::DEFAULT_TTL) {  argument
78         $key = self::getMonthCacheKey($namespace, $year, $month);
118      * @param string $namespace Namespace filter
124     public static function setMonthEvents($namespace, $year, $month, array $events) {  argument
125         $key = self::getMonthCacheKey($namespace, $year, $month);
150      * @param string $namespace Namespace filter
154     public static function invalidateMonth($namespace, $year, $month) {  argument
155         $key = self::getMonthCacheKey($namespace, $year, $month);
170      * @param string $namespace Namespace to invalidate
172     public static function invalidateNamespace($namespace) {  argument
173         $ns = preg_replace('/[^a-zA-Z0-9_-]/', '_', $namespace ?: 'default');