ゴール AWS ElastiCache は RDS と同じくマルチ AZ に対応している。 Q: Does Amazon ElastiCache for Redis support Multi-AZ operation? Yes, with Amazon ElastiCache for Redis you can create a read replica in another AWS Availability Zone. Upon a failure of the primary node, we will provision a new primary node. In scenarios where the primary node cannot be provisioned, you can decide which read replica to promote to be th
![AWS CLIを使ってマルチAZなElastiCache Redisのリードレプリカを作成する](https://cdn-ak-scissors.b.st-hatena.com/image/square/581df64973c8126faf46c2eafb7d06de1e8d631c/height=288;version=1;width=512/https%3A%2F%2Fsiguniang.files.wordpress.com%2F2014%2F09%2Freplication-groups.png)