Why My Host’s CDN Cached Login Pages and Caused 403 Loops and the Cache-Bypass Rule That Saved Authentication
In the evolving landscape of website performance optimization, Content Delivery Networks (CDNs) play a dominant role in balancing speed, reliability, and scalability. However, when misconfigured, they can introduce unexpected and baffling issues, especially around user authentication. One common and frustrating problem arises when a CDN caches login pages—intended to be dynamic and secure—and inadvertently breaks authentication systems.
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