Triggering the invalidation of content in a CDN

In the Implementing a search BFF recipe, we statically serve dynamic JSON content from S3, and in the Serving static JSON from a CDN recipe, we add a cache-control header with a long max-age to further improve the performance. This technique works great for content that is dynamic, yet changes at a slow and unpredictable rate. In this recipe, we will demonstrate how to improve on this design by responding to data change events and invalidating the cache so that the latest data is retrieved.

How to do it...

1. Create the project from the following template:

$ sls create --template-url https://github.com/danteinc/js-cloud-native-cookbook/tree/master/ch4/cdn-invalidate --path cncb...