Real patterns, real trade-offs — from systems that had to keep running while they changed underneath.
Most teams avoid migration because they imagine one terrifying big-bang cutover. Here's the pattern that avoids that entirely — a facade, one slice at a time, shadow traffic to prove each cutover before it happens, and a product team that never had to stop shipping.
Read the post →Swapping a message broker under a live, high-throughput system sounds simple until you hit duplicate orders, silent failures, and a monitoring gap nobody noticed until it mattered. Here's the approach that worked — idempotent receivers, Outbox, Saga, and a migration order that didn't require a maintenance window.
Read the post →In the meantime, if your system has a similar shape, a 20-minute call is a good place to start.