Tutorials

Cache invalidation: Step-by-step tutorial on how to invalidate and purge your cache.
Caching POST requests: How to cache POST requests with Varnish.
Configuring systemd services: Step-by-step tutorial on how to manage configuration of systemd services.
DNS based GSLB (Global Server Load Balancer): This tutorial shows how PowerDNS can be configured as a Global Server Load Balancer in front of a geographically distributed cluster of Varnish nodes.
Enabling logging with varnishncsa: Step-by-step tutorial to enable request logging with varnishncsa.
Getting started: How to install and get started with Varnish.
Let's Encrypt with Hitch and Varnish (CentOS7): Step-by-step tutorial to setting up Hitch with automated and free certificates from Let's Encrypt.
Logging Hits and Misses: How to tag request type (hit, miss, pass, etc.).
Object lifetime: TTL, Grace, Keep: Tutorial to understand objects lifetime.
SELinux FAQ: Frequently asked questions about SELinux and Varnish Enterprise
Securing multi tier Varnish environments: How to make sure certain Varnish tiers are only accessible by other Varnish tiers.
VSL cheatsheet: varnishlog, varnishncsa and ready-to-use VSL queries.

Manuals
Varnish Live
Varnish Cloud
Varnish Cache Plus
Varnish High Availability
Varnish Administration Console
Varnish Custom Statistics
Varnish Broadcaster
Varnish WAF
Varnish Controller

News
Varnish HTTP/2 Request Smuggling
Varnish Broadcaster 1.5.2
Varnish Controller 2.0.3
Varnish Cache Plus 6.0.8r3
Varnish Cache Plus 6.0.8r2
News archive