MISCONF Redis is configured to save RDB snapshots, but is currently not able to persist on disk. Commands that may modify the data set are disabled. Please check Redis logs for details about the error.

MISCONF Redis is configured to save RDB snapshots, but is currently not able to persist on disk. Commands that may modify the data set are disabled. Please check Redis logs for details about the error.

这个报错在实际线上服务器, 个人分析是因为redis无法持久化, 爆了服务器物理内存。故障现象分析：如果redis内存用爆了, 你看redis可能是一片空白, 也可能redis除了重启服务根本进不去。

解决方式两种：增加服务器物理内存；规划必要的redis键存入, 不必要的干掉。