The company went bakrupt, but the game we made[0] still lives. It uses MongoDB to store user accounts, profiles, inventories, match history and all persistent d

The company went bakrupt, but the game we made[0] still lives. It uses MongoDB to store user accounts, profiles, inventories, match history and all persistent data. I was the one who suggested to use MongoDB when we started (instead of SQL) as the game front-end was JS and back-end Node.js, meaning that having a MongoDB database we could easily type, store and retrieve data. Overall I think it was a good decision, it ran pretty well with over 200k MAU, ~2-3k concurrent. We never really had performance issues with the database, but we did have to implement our own locking system to make sure that non-atomic operations are performed correctly. I think there are only 3 VPSs running MongoDB (one master, one replica and one back-up I think), so actually the entire database (a few gigabytes with around 1M accounts) only runs on a single cheap VPS. [0]: https://curvefever.pro https://curvefever.pro