It seems it is not possible to scale down redis-clusters. I always end up with an error: Cannot scale from cache.t2.medium to cache.t2.micro So the only solution i found was to create another cluster, update references to it in my launch templates and then run another update after that to delete the old one.
One of the biggest hurdles i have faced in my recent tests with CloudFormation was that i can take a lot of time to test your CloudFormation scripts. The online designer works but is quirky so what's left if you want to test our your infrastructure script? The answer is simple, just test it out … Continue reading CloudFormation development tips