Skip to content
Cloudflare Docs

Build caching

Improve Workers build times by caching dependencies and build output between builds with a project-wide shared cache.

The first build to occur after enabling build caching on your Workers project will save relevant artifacts to cache. Every subsequent build will restore from cache unless configured otherwise.

About build cache

Section titled “About build cache”

When enabled, build caching will automatically detect which package manager and framework the project is using from its package.json and cache data accordingly for the build.

The following shows which package managers and frameworks are supported for dependency and build output caching respectively.

Package managers

Section titled “Package managers”

Workers build cache will cache the global cache directories of the following package managers:

Package ManagerDirectories cached
npm ↗.npm
yarn ↗.cache/yarn
pnpm ↗.pnpm-store
bun ↗.bun/install/cache

Frameworks

Section titled “Frameworks”

Some frameworks provide a cache directory that is typically populated by the framework with intermediate build outputs or dependencies during build time. Workers Builds will automatically detect the framework you are using and cache this directory for reuse in subsequent builds.

The following frameworks support build output caching:

FrameworkDirectories cached
Astronode_modules/.astro
Docusaurusnode_modules/.cache, .docusaurus, build
Eleventy.cache
Gatsby.cache, public
Next.js.next/cache
Nuxtnode_modules/.cache/nuxt

Limits

Section titled “Limits”

The following limits are imposed for build caching:

  • Retention: Cache is purged 7 days after its last read date. Unread cache artifacts are purged 7 days after creation.
  • Storage: Every project is allocated 10 GB. If the project cache exceeds this limit, the project will automatically start deleting artifacts that were read least recently.

Enable build cache

Section titled “Enable build cache”

To enable build caching:

  1. Navigate to Workers & Pages Overview ↗ on the Dashboard.
  2. Find your Workers project.
  3. Go to Settings > Build > Build cache.
  4. Select Enable to turn on build caching.

Clear build cache

Section titled “Clear build cache”

The build cache can be cleared for a project when needed, such as when debugging build issues. To clear the build cache:

  1. Navigate to Workers & Pages Overview ↗ on the Dashboard.
  2. Find your Workers project.
  3. Go to Settings > Build > Build cache.
  4. Select Clear Cache to clear the build cache.