Big software companies use private npm registries to ensure security, control, and reliability. These registries allow them to vet and manage dependencies, avoid risks from malicious or unstable public packages, and host custom internal libraries securely. Private registries also improve performance with faster installs, ensure stable builds, support compliance with industry regulations, and integrate seamlessly with CI/CD workflows.
npm config set registry <url>npm set registry https://registry.npmjs.org/npm install --registry=https://your.registry.local/npm install --registry=https://registry.npmjs.org/sudo npm cache clean --force