Tag
dual-write
- Sep 30, 2026 Migrating Stored Data While Both Formats Are Live A dual-write phase lets code change before data does, but it trades a clean cutover for a consistency problem. Ordering, backfill, and verification decide whether it holds. software engineering
- Aug 21, 2026 Rollback as a Question of Write Reversibility Why reverting traffic is easy and reverting state is not, how dual-write and tombstones change the rollback budget, and when a cutover becomes one-way. cloud infrastructure
- Oct 15, 2025 Dual Writes and the Divergence They Inevitably Produce Why writing to two stores from application code cannot be made atomic, how partial failure and reordering corrupt one side, and which log-based alternative removes the window. software architecture
- Jun 13, 2025 Cutover Between Two Systems: Dual Writes, Shadow Reads, and the Switchover Point How a migration moves authority from one store to another without a window of divergent writes, and why the cutover must be a single atomic epoch change. distributed systems
- May 24, 2025 The Dual-Write Problem and the Transactional Outbox Why committing to a database and publishing to a broker cannot both be atomic, which failure windows open between them, and how an outbox table turns the problem into a delivery guarantee consumers must absorb. software architecture
- Dec 20, 2024 Shard Migration Cutover and the Dual-Write Window How a partition moves between machines without losing writes, why the cutover is a state machine rather than a copy, and what has to be true before the source is retired. distributed systems