If you’re familiar at all with Varnish, you know it improves content delivery performance by storing a copy of your content in cache, and every request thereafter is fulfilled by the cached content.

Hammering home the performance-performance-performance theme again and again, we’ve told the story of caching and protecting your backend many times. We’ve talked a lot about the ways in which Varnish Streaming Server lets you scale up to serve live and VoD streaming content no matter the demand on your platform. But a big part of this story is maximizing the power of the capacity you already have. Ultimately that is what caching is all about: you make copies of content you need to deliver so the copies are delivered, much faster than roundtrips to the backend could achieve while protecting the backend from overload.