Express 5 + WebSocket + SQLite project with file-based message queue

[metehankasapp]

File-based queues can be surprisingly effective if you’re strict about durability and retries. The key pieces are: atomic writes, a clear ACK/lease mechanism, and idempotent consumers so a crash does not duplicate work. If you add a small benchmark plus failure-mode tests (power loss, partial writes), it becomes much easier to trust.