AWS CodeBuild
API Reference (API Version 2016-10-06)


Information about the cache for the build project.



In the following list, the required parameters are described first.


The type of cache used by the build project. Valid values include:

  • NO_CACHE: The build project does not use any cache.

  • S3: The build project reads and writes from and to S3.

  • LOCAL: The build project stores a cache locally on a build host that is only available to that build host.

Type: String

Valid Values: NO_CACHE | S3 | LOCAL

Required: Yes


Information about the cache location:

  • NO_CACHE or LOCAL: This value is ignored.

  • S3: This is the S3 bucket name/prefix.

Type: String

Required: No


If you use a LOCAL cache, the local cache mode. You can use one or more local cache modes at the same time.

  • LOCAL_SOURCE_CACHE mode caches Git metadata for primary and secondary sources. After the cache is created, subsequent builds pull only the change between commits. This mode is a good choice for projects with a clean working directory and a source that is a large Git repository. If you choose this option and your project does not use a Git repository (GitHub, GitHub Enterprise, or Bitbucket), the option is ignored.

  • LOCAL_DOCKER_LAYER_CACHE mode caches existing Docker layers. This mode is a good choice for projects that build or pull large Docker images. It can prevent the performance issues caused by pulling large Docker images down from the network.


    • You can use a Docker layer cache in the Linux environment only.

    • The privileged flag must be set so that your project has the required Docker permissions.

    • You should consider the security implications before you use a Docker layer cache.

  • LOCAL_CUSTOM_CACHE mode caches directories you specify in the buildspec file. This mode is a good choice if your build scenario is not suited to one of the other three local cache modes. If you use a custom cache:

    • Only directories can be specified for caching. You cannot specify individual files.

    • Symlinks are used to reference cached directories.

    • Cached directories are linked to your build before it downloads its project sources. Cached items are overridden if a source item has the same name. Directories are specified using cache paths in the buildspec file.

Type: Array of strings


Required: No

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following:

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