Courses with filters that match reality

Map ownership seams, synchronous seams, and async handoffs before code freezes a wrong split.

Design sagas, outbox patterns, and idempotent consumers with tabletop timelines instead of slide theory.

Warm paths, stampede guards, and invalidation ladders with measured tradeoffs for read-heavy systems.

Game-day scripts, bulkhead sketches, and graceful degradation paths with observability hooks baked in.

Sharding keys, hot partition radar, and autoscale policies with numbers, not slogans.

Trace budgets, metric cardinality guards, and SLO drafting with mentor review of two real services.

Long-running workflows drawn as storyboards with compensations, idempotency keys, and human checkpoints.