Start by making module boundaries real inside the monolith: each module owns its domain, application API, and data access; other modules use contracts rather than its tables. Add observability and identify a boundary with an independent business need, scaling profile, team ownership, and acceptable failure semantics. Extract one capability using a strangler approach. Define a versioned API/event contract, move data ownership, use an outbox for reliable events, route a small percentage, compare outcomes, then retire the old path. Avoid a shared database after extraction. Account for latency, retries, idempotency, security, deployment, and operations. Microservices add failure modes, so extraction should solve a measured problem rather than follow fashion.
Backbencher Developer · · 0 likes