How do I deploy a Node.js app on Heroku?

How do I deploy a Node.js app on Heroku?

To deploy a Node.js app on Heroku, first ensure you have the Heroku CLI installed. Then, follow these steps: 1. Create a Heroku account and log in using heroku login. 2. Navigate to your app's directory in the terminal. 3. Initialize a Git repository if you haven't already with git init. 4. Create a new Heroku app using heroku create. 5. Add your files to the Git repository with git add . and commit them using git commit -m 'Initial commit'. 6. Deploy your app with git push heroku master. 7. Finally, open your app in the browser using heroku open.

What if I encounter errors during deployment?

If you encounter errors, check the Heroku logs using heroku logs --tail to see what went wrong. Common issues include missing dependencies or incorrect buildpacks.

How can I set environment variables on Heroku?

You can set environment variables on Heroku using the command heroku config:set VARIABLE_NAME=value. This is useful for storing sensitive information like API keys.

Is there a way to scale my app on Heroku?

Yes, you can scale your app by adjusting the number of dynos. Use the command heroku ps:scale web=1 to set the number of web dynos. You can increase this number based on your app's needs.