Fatal error: Uncaught RedisException: OOM command not allowed when used memory > 'maxmemory'. in /www/wwwroot/lizhi/Controlls/DBController.php:84 Stack trace: #0 /www/wwwroot/lizhi/Controlls/DBController.php(84): Redis->set() #1 /www/wwwroot/lizhi/songs_detail.php(15): DBController->execute() #2 {main} thrown in /www/wwwroot/lizhi/Controlls/DBController.php on line 84