Using pm2 in cluster mode allows you to scale your Next.js application by starting multiple processes that all listen on the same port, improving performance with higher traffic.
To set up pm2 for a Next.js application, a pm2.json configuration file is created where you define the app, execution mode, number of instances, and log management.
In a Docker environment, using pm2-runtime is essential to manage your Next.js application correctly as it prevents the container from exiting prematurely, resolving the issue of built file paths.
To start the Next.js application in Docker, first initiate the pm2 process, followed by pm2-runtime executing your application, ensuring the correct path for the built files.
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