Cache Timestamp in HTTP Headers (NGINX Page-Caching)

Hubert Nguyen

It would be great to have a time-stamp (or an age) for WHEN an item entered the NGINX page-cache (Redis/FastCGI) to facilitate debugging.

This could run on production sites as well, making debugging caching issues much easier. Today, we know IF a page is cached, but not WHEN it entered caching.