Content Delivery Networks¶
Control which responses are cached, where they are served, and how stale or unsafe content is removed.
Topics¶
| # | Topic | Practice outcome |
|---|---|---|
| 01 | Pull CDN | Trace a miss, origin fill, and later hit. |
| 02 | Push CDN | Decide when explicit publication is worth the workflow. |
| 03 | Cache Invalidation | Design versioning and purge recovery. |
| 04 | Edge Locations | Measure user-to-edge and edge-to-origin paths. |
| 05 | CDN Security | Protect origins, keys, and cache boundaries. |
Practice loop¶
Request the same object twice, compare cache headers and timing, then change one cache-key input and explain why the result should hit or miss.