As the primary sponsors and developers behind the open-source Varnish Cache project, and providers of the commercial Varnish Enterprise software, we are often asked:
Until recently, most users of private CDN solutions have had unique use cases, requiring flexibility and customizability without the costs and challenges of building from scratch or relying solely on public/commercial CDNs. And in fairness, the features of a private CDN, such as custom PoP placement and custom configuration, aren’t for everyone. After all, commercial CDNs deliver what they promise: efficiency and performance in content delivery at large scale.
Until they don't.
This episode of Two Minute Tech Tuesdays is about request coalescing, a core feature in Varnish that is used to reduce the stress on origin servers when multiple requests are trying to fetch the same uncached content.
As principal members of the Streaming Video Alliance (SVA), Varnish Software supports all standardization and interoperability work related to Open Caching. Of course, more broadly, we are also committed to open standards.