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Package Registry - CI/CD Glossary Definition

A package registry is a repository that hosts published software packages for a language ecosystem, such as npm, PyPI, Maven Central, crates.io, or RubyGems, that tools download from at install time.

Public vs private

Public registries serve open-source packages; private registries (or scopes within a public one) host internal code. Misconfiguring which is preferred enables dependency confusion attacks.

In CI

Caching the registry download or proxying through a local mirror cuts install time and protects builds against upstream registry outages.

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