Node.js: Graceful shutdown

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

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When you deploy a new version of your app, the previous version receives a termination signal before shutting down. This allows your app to properly 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 as follows:

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
  // ...
});