Monitoring concept guide
Dead Man's Switch Monitoring Explained
The dead man's switch pattern monitors expected evidence of life. When the expected report goes quiet, the surrounding system can investigate.
Why silence matters
Many failures produce no useful event. A scheduler disappears, a worker is killed, a private machine loses connectivity or a process stops before writing its normal log. There may be nothing to push into an incident system.
The monitoring loop
- Define the expected interval or execution window.
- Send a report after the work reaches its meaningful checkpoint.
- Store and inspect the evidence of life.
- Investigate when the expected report is absent.
What it is not
A dead man's switch is not a replacement for uptime checks, error monitoring, logs, metrics or restore tests. It answers a narrower question: did the expected process report recently?
Applying it to applications
Applications, workers, imports, backups and synchronization jobs can all send outbound heartbeats. HeartbeatHook adds authenticated signal creation, polling and ACK when a second application also needs a controlled return path.
For the product implementation, see dead man's switch monitoring.