MongoDB vs Supabase vs MySQL: How to Choose

Because Anested Clouds offers managed MongoDB, Supabase, and MySQL/MariaDB, customers regularly ask us which database they should pick. We host and support all three, so our answer carries no sales agenda — this is simply the framework our own engineering teams use when starting a new project.

Choose MongoDB when your data is document-shaped and your schema will evolve weekly. Product catalogs, activity feeds, event logs, and content systems love it. A document database lets an early product change its mind cheaply, which is exactly what early products do. The same flexibility becomes a liability in systems of record — if you are building a ledger, look elsewhere.

Choose Supabase when you want Postgres plus batteries. Authentication, row-level security, file storage, and realtime subscriptions come out of one instance, which makes it the fastest path we know from idea to working application. Crucially, you are still on real SQL underneath — when your app outgrows the convenience layer, the database underneath does not need replacing.

Choose MySQL or MariaDB when your team already knows it, when your data is relational and stable, or when the software you are deploying simply expects it — most of the PHP ecosystem, for instance. It is battle-tested, cheap to run, and with phpMyAdmin included on our plans, it is also the easiest option for non-developers to inspect.

There is one anti-pattern we push back on constantly: choosing a database from benchmark charts. At the scale most products operate, all three engines are fast enough. What actually determines your experience is how well your team understands the tool at three a.m. during an incident.

The honest summary: for most new projects we reach for Supabase, for content-heavy and fast-moving systems MongoDB, and for anything an existing ecosystem dictates, MariaDB. Pick for your team, not for the hype cycle.