Postgres doesn’t support active-active replication natively. As of this writing, we have to rely on 3rd party tools. I decided to go with BDR. I didn’t want to spin up multiple VMs. So, the obvious choice is docker. Make sure you have docker on mac & docker compose. Step1: Running 2 Postgres instances using docker container Thanks to jgiannuzzi, who created a docker image with Postgres and BDR. docker-compose.yml file content