Individual skill

nodejs-graceful-shutdown

Use when asked to implement or fix service termination: SIGTERM or SIGINT, connection draining, health-check signaling. Not for general service scaffolding: use nodejs-service-foundations.

.devin/skills/nodejs-graceful-shutdown/SKILL.md

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# Node.js graceful shutdown

## Contract

| Field | Bound contract |
|---|---|
| Trigger | Implementing or fixing service termination handling: SIGTERM or SIGINT, connection draining, health-check shutdown signaling, zero-downtime deploys. |
| Authority | Reversible local: writes only the service shutdown handler and a companion test; rollback is version control. No remote mutation. |
| Side effect | Edits server shutdown code; runs a short-lived server to verify drain. |
| Done | On signal the service stops accepting new connections, drains active requests within the deadline, closes external dependencies, exits with code 0 on success or non-zero on deadline, and the companion test passes. |

## Inputs

- `DRAIN_TIMEOUT_MS`: integer milliseconds to wait for in-flight requests to complete before forcing exit. Required; must be positive. Default `10000`.