According to a Cisco forecast, by 2020 global mobile traffic will bypass desktop traffic, projected to reach 30.6 exabytes, approximately 30 billion gigabytes.
These days, almost nothing happens online without authentication. It goes without saying that it has become extremely important. Whether you run a very small internal website or a huge e-commerce platform, it’s almost a guarantee that you will have an authentication layer somewhere in your architecture. The reason is simple: you don't want just anyone to be able to change or access the content or your web application layer.
The Varnish Configuration Language (VCL) is a small domain-specific language designed to be used to define request handling within Varnish. It is extremely flexible and allows you to let Varnish do exactly whatever you want or need it to do.
As you might already know Varnish Cache Plus is a Varnish Plus product that is built on the top of the open source project Varnish Cache. Varnish Cache is usually a little ahead with regard to versioning because it may have some experimental features.