Glossary/

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Dead man's switch Scheduled Jobs Dead man's switch Dead man's switch is a control that alerts when an expected signal stops arriving. What is dead man's switch? Dead man's switch describes a control that alerts when an expected signal stops arriving.

In reliability work, the label is useful only when it maps to a measurable check, a clear owner, and a next action when expectations break. Without that operational meaning, the phrase becomes decoration in dashboards and status updates. Why it matters Dead man's switch matters because teams need a precise shared meaning for a control that alerts when an expected signal stops arriving.

Vague language turns incidents into arguments about words instead of fixes. When everyone uses the same definition, alerts, status updates, and post-incident reviews stay aligned. How it works In practice, a control that alerts when an expected signal stops arriving shows up as a concrete signal you can measure or communicate.

Operators define what good looks like, watch for deviations, and record what happened when expectations break. The useful version of dead man's switch is operational: it changes who gets notified, what customers see, or which metric a team reviews after an incident.



Practical example Imagine a team operating around alert if the reporter job stops pinging daily.

When observed behavior stops matching the definition of dead man's switch, the team treats that change as a reliability event with a clear owner and next step. Common misconception Dead man's switches are only physical hardware That reading usually collapses distinct ideas into one slogan. Keep dead man's switch tied to observable behavior so the definition stays useful under pressure.

How Fajita handles this Heartbeat monitoring is a software dead man's switch for scheduled work. Reading tip This glossary page explains the concept. Product steps live in the documentation links below.

The applicable agreement controls Fajita’s contractual obligations when a topic touches billing, privacy, or service commitments. Related terms Heartbeat monitoring

Cron job Related documentation Heartbeat monitoring Monitor your first endpoint with Fajita Create a website, API, certificate, or heartbeat monitor and test it before monitoring begins. Start monitoring Was this definition explicit? PreviousCustom status-page domainNextDead-letter queue On this page Why it matters

How it works

Practical example

Common misconception

Dead man's switches are only physical hardware

How Fajita handles this

📌 Dead man's switch (Dead Man's Flats)
🏢 Fajita
📍 Dead Man's Flats