Varnish

Varnish is an HTTP accelerator that sits in front of a web server and answers repeated requests from memory. This tag collects guides about caching RSS and Atom feeds with Varnish. Articles explain how to remove cookies for feed paths, set a short lifetime with a long grace period and compress XML responses. They also cover purge requests when an article is published, ETag and Last-Modified validators, health probes for the backend and header checks that show hits and misses. The advice helps site owners keep feeds fast during traffic peaks and share every new article on social networks automatically.