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Last updated: 9 Jun 2020

govuk-aws: 25. Use Elasticache for Redis

Date: 2017-09-04

Status

Accepted

Context

Traditionally we provisioned our own redis machines in a non-clustered state.

AWS provide Elasticache which has a Redis engine, and can be configured to be clustered.

We should consider provisioning Elasticache to replace our provisioned Redis instances.

Decision

We are using Elasticache instead of provisioning our own Redis instances.

Consequences

We have less Puppet code to manage. There is no risk of lock-in because the client side behaviour is not changed.

There are some restricted commands in Elasticache which may impact our management of it.