convex-migrations

To safely add a required field to a live Convex schema, introduce it as optional first, backfill existing records in batches, and finalize the schema only after all documents are updated. This staged approach prevents broken production documents during live traffic.

The best way to rename a field in Convex without downtime is using a staged schema migration. You add the new property, update queries with fallback logic for old and new data, backfill records, then remove the deprecated field.

Yes, you can change a field type in Convex while queries are running by applying a staged rollout pattern. This involves moving between field types with fallback logic so old and new data coexist without breaking active queries.

When introducing indexes in Convex, add the indexes before using them and backfill existing records in batches. This ensures the index is populated and queries remain functional during the transition.

Use a staged schema update for Convex migrations when evolving application data without downtime. It is required for adding fields, backfilling records, removing deprecated fields, renaming properties, and changing field types in live apps.

To handle fallback logic for old and new data during a Convex migration, design queries to check both the old and new property names. This fallback handling protects production deployments while batch backfills and completion checks are underway.