Environment configuration — why, what and how?

Abhishek Choudhary
5 min readNov 19, 2021

Configuration Management is an important aspect of software engineering. This article will highlight the why and what of the problem and reason about the different solutions that exist.

The approach to managing configuration changes as the app scales — both in terms of traffic and developer team size. To illustrate the journey, lets start with a simple app.

This is a simple server app that connects to MongoDB and returns the list of users. The code is just pseudo code and is not meant to adhere to any language.

A simple server that connects to MongoDB

Hardcode configuration in app: a BIG NO!

Don’t hardcode variables inside the app

Hardcoding the MongoDB uri into the app will it really hard to run the application in any other environment — like fellow teammates’ laptops, or for production. We should follows the 12 factor app methodology here to separate config from code.




Abhishek Choudhary

Enterprenuer | Ex-Facebook Hacker | Travel | Musician by aspirations