Safe, zero-downtime database migration strategies — schema evolution, rollback planning, data migration, tooling, and anti-pattern avoidance for production systems. Use when planning schema changes, writing migrations, or reviewing migration safety.
Initial release: Safe, zero-downtime strategies for database migrations in production systems. - Covers schema evolution patterns, rollback planning, and anti-pattern avoidance. - Includes actionable tables for zero-downtime operations, migration tools, and data migration batching. - Provides detailed pre/during/post-migration checklists and CI examples. - Emphasizes testing on production-like data and safety-first practices. - "NEVER do" section warns against high-risk migration mistakes.