In Google Cloud Next 2019, they introduced a new product called Cloud Run. I’ve been using it from the EAP (Early Access Program) days. [As the name suggests, basically it runs your docker image. You might be familiar with other serverless products such as Cloud Function or lambda where you provide your source code instead of a docker image. In my opinion, Cloud Run is more flexible than functions. Let me explain why.

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

I am writing this around the time where we are at the beginning of a global pandemic. Everyone is trying to figure out how to keep their business up and running during this challenging period. Most of the employers have mandated work from remote policy. One of the main challenges is how to connect to your applications remotely. Traditionally the answer is VPN. There are so many challenges wrt scalability, availability, and performance of these traditional VPN software.

When I first heard GPG it was little daunting. I haven’t used it exactly, even though I was familar with the concept. So, I decided to dig deeper and understand how to use it. GnuPG (GPG) is an implementation of PGP The simple idea is that you generate a key pair: secret or private key and a public key. You can provide your public key to anyone. They can then encrypt either a secret or file using your public key.

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)