Pulse

Definitions

1. A periodic signal or lightweight health check emitted by a service or process to indicate it is alive and functioning. Unlike a full health check, a pulse (or heartbeat) typically carries minimal payload — just confirmation of liveness — and is used by orchestrators, load balancers, or watchdogs to detect unresponsive instances.

   In plain English: A regular 'I'm alive' signal that a program sends so other systems know it hasn't crashed.

   Example: "The worker sends a pulse to Redis every 10 seconds — if we miss three in a row, the supervisor restarts it."

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