Today's episode is about Varnish Discovery, but before we can talk about Discovery, we need to look back at last week's episode about Varnish Broadcaster. 

This week's episode of 2 Minute Tech Tuesdays is about the Varnish Broadcaster, a Varnish Enterprise tool that broadcasts messages to multiple servers.

In this episode we’ll be talking about Varnish High Availability.

In this post, I will explain how to create a highly available, self-routing sharded Varnish Cache cluster. This is similar to a standard sharded cluster with one exception, there is no dedicated routing tier. Each node in the cluster can route the request to the proper destination node, by itself.