Deploy a Redis database

Navigate to Add Ons → + New Add On give your add on a name and select Redis. Then click Create Add On

Once the Redis instance is created, copy the Connection URL

Navigate back to Projects → Whiteboarder → Environment and set the REDIS_URL environment variable to the connection URL you just copied and click Save.

Then redeploy the application.

Make sure to redeploy the application after any settings changes. This is how Canine knows to apply the changes to your underlying Kubernetes cluster (we never apply any changes to your cluster without a deployment)