Node.js: Graceful shutdown

This documentation is part of the Getting started guide. View the full guide here: Learn how to deploy a Node.js service on Stackhero quickly and securely.

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When you deploy a new version of your app, the previous version is given a termination signal before it shuts down. This gives your app time to close database connections and stop other services gracefully.

The termination signal SIGTERM is sent to your app. You can handle this signal in your code like this:

process.on('SIGTERM', () => {
  // This log appears on the Stackhero dashboard in the "logs" tab
  console.info('SIGTERM signal received.');

  // Close open database connections or other services here
  // ...
});