Redisserver缓存自动清除

Question

我用Django搭配芹菜和redis服务器。在我将Wordpress站点部署到同一AWS实例上后，redis服务器将自动清除所有缓存数据。我不明白问题的根本原因。下面是我在redis控制台上得到的密钥空间通知

"pmessage","__key*__:*","__keyevent@0__:set","backup4"
"pmessage","__key*__:*","__keyspace@0__:backup4","set"
"pmessage","__key*__:*","__keyevent@0__:set","backup4"
"pmessage","__key*__:*","__keyspace@0__:backup3","set"
"pmessage","__key*__:*","__keyevent@0__:set","backup3"
"pmessage","__key*__:*","__keyspace@0__:backup3","set"
"pmessage","__key*__:*","__keyevent@0__:set","backup3"
"pmessage","__key*__:*","__keyspace@0__:backup4","set"
"pmessage","__key*__:*","__keyevent@0__:set","backup4"
"pmessage","__key*__:*","__keyspace@0__:backup4","set"
"pmessage","__key*__:*","__keyevent@0__:set","backup4"
"pmessage","__key*__:*","__keyspace@0__:backup3","set"
"pmessage","__key*__:*","__keyevent@0__:set","backup3"
"pmessage","__key*__:*","__keyspace@0__:backup4","set"
"pmessage","__key*__:*","__keyevent@0__:set","backup4"
"pmessage","__key*__:*","__keyspace@1__:unacked_mutex","set"
"pmessage","__key*__:*","__keyevent@1__:set","unacked_mutex"
"pmessage","__key*__:*","__keyspace@1__:unacked_mutex","expire"
"pmessage","__key*__:*","__keyevent@1__:expire","unacked_mutex"
"pmessage","__key*__:*","__keyspace@1__:_kombu.binding.celery","sadd"
"pmessage","__key*__:*","__keyevent@1__:sadd","_kombu.binding.celery"
"pmessage","__key*__:*","__keyspace@1__:celery","lpush"
"pmessage","__key*__:*","__keyevent@1__:lpush","celery"
"pmessage","__key*__:*","__keyspace@1__:unacked_index","zadd"
"pmessage","__key*__:*","__keyevent@1__:zadd","unacked_index"
"pmessage","__key*__:*","__keyspace@1__:unacked","hset"
"pmessage","__key*__:*","__keyevent@1__:hset","unacked"
"pmessage","__key*__:*","__keyspace@1__:unacked_index","zrem"
"pmessage","__key*__:*","__keyevent@1__:zrem","unacked_index"
"pmessage","__key*__:*","__keyspace@1__:unacked_index","del"
"pmessage","__key*__:*","__keyevent@1__:del","unacked_index"
"pmessage","__key*__:*","__keyspace@1__:unacked","hdel"
"pmessage","__key*__:*","__keyevent@1__:hdel","unacked"
"pmessage","__key*__:*","__keyspace@1__:unacked","del"
"pmessage","__key*__:*","__keyevent@1__:del","unacked"
"pmessage","__key*__:*","__keyspace@1__:celery","lpush"
"pmessage","__key*__:*","__keyevent@1__:lpush","celery"