我知道了

Fatal error: Uncaught exception 'RedisException' with message 'OOM command not allowed when used memory > 'maxmemory'.' in /var/www/ThinkPHP/Library/Think/Session/Driver/Redis.class.php:75 Stack trace: #0 /var/www/ThinkPHP/Library/Think/Session/Driver/Redis.class.php(75): Redis->setex('dd7b90cc7d1d0d9...', 3600, '') #1 [internal function]: Think\Session\Driver\Redis->write('dd7b90cc7d1d0d9...', '') #2 {main} thrown in /var/www/ThinkPHP/Library/Think/Session/Driver/Redis.class.php on line 75