https://newsletter.pragmaticengineer.com/p/real-world-engineering-challenges
tl;dr Migration plan What do we need to consider?
- Downtime
- Data consistency
- Rollback plan
- Observable and measurable
- Team awareness
Common steps
- Dual reads / writes -> old database is primary
- Backfilling
- Compare and validate the new database
- Dual reads / writes -> new database is primary
- Remove old database
