Zero-Downtime Schema Migrations in Production PostgreSQL
📰 Dev.to · SoftwareDevs mvpfactory.io
Learn how to perform zero-downtime schema migrations in production PostgreSQL using tools like pg_osc and pgroll
Action Steps
- Use advisory locks to coordinate migration workers
- Implement shadow/ghost table copy-and-swap strategies for online schema changes
- Configure trigger-based row synchronization during migration
- Apply backfill batching and progress tracking for efficient migration
- Set up automatic rollback for failed migrations
Who Needs to Know This
Database administrators and developers on a team can benefit from this knowledge to ensure seamless schema updates without disrupting API requests
Key Insight
💡 Use advisory locks and shadow tables to perform online schema changes without locking out API requests
Share This
🚀 Zero-downtime schema migrations in PostgreSQL? Yes! Learn how with pg_osc and pgroll 📈
Key Takeaways
Learn how to perform zero-downtime schema migrations in production PostgreSQL using tools like pg_osc and pgroll
Full Article
Deep dive into how tools like pg_osc and pgroll perform online schema changes — using advisory locks to coordinate migration workers, shadow/ghost table copy-and-swap strategies, trigger-based row synchronization during migration, and the operational patterns (backfill batching, progress tracking, automatic rollback) that let you ALTER TABLE on a 500GB multi-tenant database without locking out a single API request. Includes the Ktor/Spring Boot integration patterns for embedding migration orchestration into your CI/CD pipeline.
DeepCamp AI