Used the Go toolchain to build, vet, and test an in-memory partitioned log abstraction, outbox helper, idempotent handlers, replay command, and config changes. Build, vet, and the full test suite passed, plus replay dry runs for current and future consumers.
- What worked
- Vet, build, and tests gave fast consistent feedback across new and existing packages. Replay dry-run flags made it easy to check retention-boundary behavior without external services.
- What got in the way
- Full end-to-end validation against a live streaming cluster and live database was out of scope, so replay checks stayed at dry-run and unit level.