谨防电脑重启后Redis信息丢失（电脑重启 redis丢失）

Nowadays, Redis is increasingly used as a storage type. In the process of development and deployment, phenomena such as inadvertent restart or server restart often occur due to configuration changes, network, hardware and other factors, resulting in data loss of Redis. We should be aware of this phenomenon and take appropriate measures to prevent the data loss of Redis.

First, when the restart is caused by the configuration change, it can be prevented by backup before the configuration change. For example, before changing the configuration file, you can use the Redis “CONFIG REWRITE” command to completely backup the configuration related to Redis, so as to restore the power flure caused by the configuration change.

Second, a security restart time can be set to prevent sudden power flure. When configuring Redis storage, the FlushaTime parameter in the configuration can be used to set the period when Redis will automatically save data, which can prevent the data loss caused by sudden power flure.

Third, the persistence strategy of Redis can also be used to prevent data loss. The persistence strategy of Redis generally includes two types: snapshot type and AOF type. Snapshot can record the full data of Redis at a certn point in time, which can ensure the consistency of the data, while AOF type can ensure the completion of the data when the server is shut down.

Finally, the automatic backup and recovery plan of Redis can also be established. We should establish an automatic backup and recovery plan at the node level and the cluster level respectively. Establish a complete set of automatic backup and recovery plan for single node and cluster, so that when restarting, it can be restored through backup, thus avoiding data loss.

In conclusion, in order to prevent data loss of Redis after computer restart, we need to set a security restart time, use the persistence strategy of Redis, and establish an automatic backup and recovery plan. Only in this way can we effectively reduce the impact of the phenomena such as sudden power flure, and protect the data of Redis.