GCP CloudSQL Read-replica instance

Currently there is a pilot project where read-replicas will be implemented in: TMS new feature: Investigate adding Read Replica to Cloud SQL (https://app.clickup.com/t/861mukurx)

Read-replica instances copy 1:1 the master they are part of. You cannot pick-and-choose what databases you want to include. If you need to only select certain databases, you either need to create a new Cloud SQL instance or use some kind of external (for ex. compute instance) read-replica.

Read-replicas do not have to be as powerful as their master, they can be less or more powerful. You can also nest read-replicas up to 10 levels.