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Node.js guides

Hands-on guides that cover Node.js. Every command is run and verified on a live server before it is published.

Guide

Install Node.js and Run a Real App

See the destination first, then install the Node.js LTS on a bare slice, write a small Express node.js app, and serve it live behind nginx and in a browser.

9 min read
Guide

Run Node.js Under systemd

Turn the node.js app into a systemd service that starts on boot and restarts on failure. Kill the process by hand and watch systemd bring it back with a new PID.

6 min read
Guide

Environment, Config and Secrets

Configure a node.js app through the environment and keep node.js secrets in a 600 file only the service user can read, with NODE_ENV set to production.

6 min read
Guide

Clustering Across CPU Cores

Use the node.js cluster module to run one worker per CPU core so both cores serve traffic. See the worker PIDs and prove different workers answer different requests.

6 min read