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AWS CloudFront Cache Invalidation

This is a small function that can be invoked to invalidate the cache of a CloudFront Distribution.

Updated slightly from the aws-cloudfront-cache-invalidation script to send a response to CodePipeline on success.

The purpose of this function is to be called as required as a standalone function when you need your cache invalidated and the functionality is not in-built to the tool or service you are using. Example: This function is called during the Deploy stage of a CodePipeline to invalidate the cache of a CloudFront Distribution for a static website hosted in Amazon S3

How to use

  1. Create a new Lambda function
  2. Select Python 3.8 as the runtime
  3. Copy the source code into your function
  4. Create execution role and assign permissions to your cloudfront distribution
  5. Create an Environment Variable with a key of DISTRIBUTION_ID and a value of your CloudFront Distribution
  6. Deploy function

Note This function invalidates the entire cache. To select paths update the *items sections within the function