expressjsHow do I keep my Express.js application alive?

Keeping an Express.js application alive is an important step in ensuring that your application performs as expected. There are several ways to keep your application alive, depending on your hosting environment.

1. Using Forever: Forever is a popular Node.js package that allows you to keep a Node.js application running even after it crashes or is stopped. To use Forever, you need to install it as a global package and then run your application using the Forever command.

$ npm install -g forever
$ forever start myApp.js

2. Using PM2: PM2 is another popular Node.js package that can be used to keep your Express.js application running. It allows you to configure application settings such as CPU and memory usage, as well as restart policies. To use PM2, you need to install it as a global package and then run your application using the PM2 command.

$ npm install -g pm2
$ pm2 start myApp.js

3. Using Systemd: Systemd is a popular Linux service manager that can be used to keep your Express.js application running. To use Systemd, you need to create a service file for your application and then enable and start the service.

$ systemctl enable myApp.service
$ systemctl start myApp.service

These are just a few of the ways you can keep your Express.js application alive. Depending on your hosting environment, there may be other solutions available.

## Helpful links

• Forever
• PM2
• Systemd

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