Implement RedisCacheSource::flushAll()

diff --git a/wcfsetup/install/files/lib/system/cache/source/RedisCacheSource.class.php b/wcfsetup/install/files/lib/system/cache/source/RedisCacheSource.class.php
index aac947eab8d329f29a3fccb69c40cb1bf02efdb4..597f2fb233a692c8572a4064c5119b1d8d826412 100644 (file)
--- a/wcfsetup/install/files/lib/system/cache/source/RedisCacheSource.class.php
+++ b/wcfsetup/install/files/lib/system/cache/source/RedisCacheSource.class.php
@@ -73,7 +73,11 @@ class RedisCacheSource implements ICacheSource {
         * @see \wcf\system\cache\source\ICacheSource::flushAll()
         */
        public function flushAll() {
+               // set flush key to current time if it does not exist yet (this prevents falling back to 0 if the key gets deleted)
+               $this->redis->setnx('_flush', TIME_NOW);
                
+               // atomic increment of flush count
+               $this->redis->incr('_flush');
        }
        
        /**