redis learning (16) - redis persistence

redis persistence

What is persistence

redis all data remains in memory, updates to the data will be saved to disk asynchronously

Persistent way

1. Snapshot

A snapshot is a moment when a full backup of the data.

in:

• MySQL Dump
• Redis RDB

used.

2. Write log

Database updates do anything it will be recorded in the log, a time when data needs to be recovered, the operation only need to log in the re-run again, it will have complete data of a point sometime.

in:

• MySQL Binlog
• Hbase HLog
• Redis AOF

used.

Reproduced in: https: //www.jianshu.com/p/4aedfd4eed87