Design of a CDN

This design separates client delivery from the work of placing and refreshing content. Trace one cache hit and one cache miss through the components, then use the API sketches to identify the information each component needs.

CDN design

We will design the CDN in two phases: first, we will define the core components, and second, we will examine the workflow of their interactions.

CDN components

The CDN consists of the following components: