[hosh]

2015: stateless Ruby on Rails web pods and sidekiq pods inside Kubernetes. Redis and Postgres provided by AWS Elasticache and Postgres. The single cluster served two customer facing apps and a single, centralized authentication for users that supports both apps.

This was K8S 1.1, before DaemonSet and PetSet.

On the production machines, I ended up provisioning two different node types -- one with burst cpu shares and one with fixed cpu shares. I had to use node labelling. The web workers were sensitive to spikes in traffic and the background workers ate up all the available cpu, and shouldn't be shared with the web workers.