Step 1: Setting up HAProxy I hope you gone through Part1 of this series. Perhaps, one thing you might have noticed is that I’ve to connect to the specific master database. In our case, since both the databases are running on docker, only the localhost port is different. (In a production environment, most likely you going to run the databases on a different host). The main reason for active-active replication is high availability.

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

Mark my word. We had so many competitions in the past. Eg. vim vs emacs, tabs vs spaces etc. The new comparison which is added in this decade is functions vs containers Both the functions and containers can be serverless. So, please avoid the notion of serverless means functions. In fact, predominantly all the functions (like lambda, cloud functions) are running behind the screen as containers. (there are few products like Cloudflare workers are running without containers)

We all at some point in time thought about having a personal website. It may be for writing about your travel trips, posting pictures of food that you cooked or ranting about the tech which you don’t like. I will leave the reason to you Step1: Buying a domain This websites domain name is viggy28.dev. You want a human friendly name, so that your friends, family and rest of the internet can reach your website.