https://tungdadev.com/blog A personal space on the cloud where I document my programming journey, sharing lessons, insights and resources for fellow developers. en-us bthanhtung.ite@gmail.com (TungDaDev) bthanhtung.ite@gmail.com (TungDaDev) Mon, 31 Aug 2026 00:00:00 GMT https://tungdadev.com/blog/zero-downtime-database-migration-expand-contract https://tungdadev.com/blog/zero-downtime-database-migration-expand-contract Cẩm nang toàn diện của Database Solution Architect về Zero-Downtime Migration: Phân tích ma trận AccessExclusiveLock, Chiến lược Expand-Contract 5 pha, Kỹ thuật Dark Launching Shadow Reads, Throttled Keyset Backfill và So sánh gh-ost vs pg_repack. Mon, 31 Aug 2026 00:00:00 GMT bthanhtung.ite@gmail.com (TungDaDev) databasesystem-designflywaypostgresqlmysqlzero-downtimesoftware-architecturevietnamese