我们可以将AWS RDS只读副本视为备份吗？

Question

I have postgres on rds with 2 day snapshot retention. But it's only updated daily so in order not to lose 24 hours of data, I decided to enable read replica to make sure data are safe.

Is it okay to use read replica as backup?

Is there any better way to have sync backup (maximum 30 mins lag) of postgres from rds?

Answer 1

RDS Postgres supports point-in-time restores ( http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_PIT.html ).

If you run a disastrous query on your main database, your read replica will also sync this changes. Don#t use it as a backup.

Answer 2

Actually, we don't need to backup manually.

DB Instance Backups

RDS provide daily automated backups, Amazon RDS also archives database change logs. This enables you to recover your database to any point in time during the backup retention period, up to the last five minutes of database usage. For more information on working with point-in-time recovery, see Restoring a DB Instance to a Specified Time .

Hola !!