AWS::CodeBuild::Project ProjectCache - AWS CloudFormation

AWS::CodeBuild::Project ProjectCache

ProjectCache is a property of the AWS CodeBuild Project resource that specifies information about the cache for the build project. If ProjectCache is not specified, then both of its properties default to NO_CACHE.


To declare this entity in your AWS CloudFormation template, use the following syntax:


{ "Location" : String, "Modes" : [ String, ... ], "Type" : String }


Location: String Modes: - String Type: String



Information about the cache location:

  • NO_CACHE or LOCAL: This value is ignored.

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

Required: No

Type: String

Update requires: No interruption


An array of strings that specify the local cache modes. You can use one or more local cache modes at the same time. This is only used for LOCAL cache types.

Possible values are:


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.


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.


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.

Required: No

Type: Array of String

Update requires: No interruption


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.

Required: Yes

Type: String

Allowed values: NO_CACHE | S3 | LOCAL

Update requires: No interruption

See also