Migrating Data into Supabase Without Downtime or Loss
Because Supabase is standard Postgres, migration from another Postgres database is usually a direct pg_dump/pg_restore or logical replication operation rather than requiring a proprietary import tool -- this is a real advantage over migrating into a proprietary backend. Migrating from a non-Postgres source (MySQL, a NoSQL database) requires schema conversion first, which Supabase doesn't automate, so that mapping work needs to happen before data transfer.
Practical Details
For minimizing downtime on a live migration, Postgres logical replication can keep a Supabase instance in sync with a source database until cutover, rather than requiring a full stop-the-world dump-and-restore window. The Supabase CLI supports schema migrations as versioned SQL files, which is the recommended way to manage schema changes going forward once you're on Supabase, rather than making ad hoc dashboard changes.
Actionable Considerations
- Use pg_dump/pg_restore or logical replication for a Postgres-to-Supabase migration rather than a custom export/import script
- Plan schema conversion explicitly before migrating from a non-Postgres source, since Supabase doesn't automate that translation
- Adopt the Supabase CLI's versioned SQL migration files for ongoing schema changes post-migration, rather than making untracked changes directly in the dashboard