modify second level cache expire to 1 day

@@ -39,12 +39,12 @@ class Cache
             // WINDOWS
             if (DIRECTORY_SEPARATOR === '\\') {
                 HoodCache::Memcache('master')->set(self::makeKey($key, 'master'), $value, $expire);
-                HoodCache::Memcache('slave')->set(self::makeKey($key, 'slave'), $value, 0);
+                HoodCache::Memcache('slave')->set(self::makeKey($key, 'slave'), $value, 86400); // 二级缓存1天
             }
             // LINUX
             else {
                 HoodCache::Memcached('master')->set(self::makeKey($key, 'master'), $value, $expire);
-                HoodCache::Memcached('slave')->set(self::makeKey($key, 'slave'), $value, 0);
+                HoodCache::Memcached('slave')->set(self::makeKey($key, 'slave'), $value, 86400); // 二级缓存1天
             }
         } catch (Exception $e) {
             // do nothing