Summary

Replication can be used to enable high availability through data redundancy by storing your application data in more than one database. When deploying replication to solve problems other than high availability, you should still consider the impact of a failure on the replicated system and plan accordingly by combining a sound backup strategy and replication retention periods. There is no easy solution when it comes to replication and high availability, but combining replication with the other technologies covered in this book can make your environment more highly available.