HTTP caching basics

Learn the basics of HTTP caching and learn how to control the behavior of a web cache by using conventional HTTP headers

Avoiding HTTP to HTTPS redirect loops in Varnish

How to avoid HTTP to HTTPS redirect loops in Varnish by creating protocol-based cached variations.

Object lifetimes: TTL, Grace, Keep

Learn how object lifetimes work in Varnish: from TTL, to Grace and Keep.