queue — background queue

So a webhook can respond quickly, you offload heavy work to the background:

use queue

queue.on "send" \job -> tools.send job.ph job.body   # the handler
queue.push "send" {ph:phone body:text}               # add to the queue

• queue.on <name> <handler> — the handler for jobs with this name. The handler takes a single job argument — this is the payload given to queue.push (a map).
• queue.push <name> <payload> — adds a job to the queue. The payload is optional (if not given, nil). It does not block — it returns immediately, and the job runs in the background.
• Jobs run on a single worker thread, FIFO (in arrival order) — ordering is guaranteed. An error inside a handler does not kill the worker.
• If push is written before on, the job waits in the queue and runs once the handler is registered (order-independent).
• The worker is a background thread — it processes the queue while a server (http.serve/ws.serve) or cron.run holds the process. In a queue-only script you need one of these blocking calls to hold the process.