cairnq

Use cairnq, the cross-language durable task runtime that coordinates through a shared database (SQLite for one host, Postgres for many). Covers the worker side (register handlers, run them, batch delivery), the API side (submit / call / get / cancel / retry / stats by id or business key), idempotency keys, retries, cooperative cancel, and the at-least-once limits. Trigger when code imports `cairnq` (Python or TypeScript), defines a Worker or handler, calls submit/call/getByKey, batches tasks into one handler call, or the user mentions cairnq, tasks.db, a durable task queue, or an embedded SQLite job runtime.