Production Redis is in the Docker stack without its own load balancer

[davidvandusen]

Expected behaviour

Production Redis is deployed independently of the Docker stack.

Actual behaviour

The Redis instance that stores user sessions is just defined in the Docker Compose configuration for production. If the swarm was scaled and two replicas of the stack were deployed without a load balancer in front of Redis, sessions would break.

Details and resources

We can spin up an AWS MemoryDB to use for production. It's even got a free tier option.

https://aws.amazon.com/memorydb/pricing/

Checklist

• This issue is linked to the appropriate project.
• This issue has appropriate labels.