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Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

health gate

The checks, with a deadline, a new image must pass before it is marked valid.

A health gate is the set of runtime checks (connectivity, sensors, peers) and the deadline within which a new image must pass them to be marked valid rather than rolled back.

Examples

  • A fan controller's health gate checks it joined Wi-Fi, reached the broker and got a heartbeat acknowledged, that sensors read in range, and that it stays up for minutes.

  • If the checks haven't passed within about five minutes, the gate gives up and rolls back rather than leaving the image on trial forever.

See also

trial boot rollback heartbeat
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