Hi everyone, I need some help.

Anshul Attri — Sat, 14 Feb 2026 11:07:31 +0000

All of my microservices need to access these databases.

To manage this, I created a shared npm package that handles MongoDB/Mongoose connections, and I import and call it in every service inside the index.ts file.

The problem is: every time a service starts, it creates multiple MongoDB connections, and after some time I can see a lot of open connections in MongoDB, which is not efficient.

I want to handle this in a professional way, like:

reusing the same connection (singleton)

preventing duplicate connections

handling reconnect logic properly

managing multiple DBs with one connection

Can someone guide me on the best practice for managing MongoDB/Mongoose connections in a microservice architecture?

DEV Community: Anshul Attri

Hi everyone, I need some help.