Full Stack Developer
hardschema-migrations-fullstack
How do you evolve schemas and migrate data safely while shipping features?
Answer
Schema changes must remain compatible during deployment.
**Process:**
- Make backward-compatible schema changes first
- Deploy code that supports old + new
- Backfill data in batches
- Switch reads/writes
- Remove old fields later
Coordinate UI and API changes via feature flags and staged rollouts to avoid breaking clients.
Related Topics
DatabasesDeploymentArchitecture