Building protocols in a way that anticipates future change in order to prevent ossification is critical. Because it’s impossible to upgrade everyone on the internet at the same time; it…

Many people think that the 103 Early Hints HTTP status code can help web performance in certain situations, but we won’t know until we get data about it, and without that data, browsers won…

The Cache-Control response header is one of HTTP’s more widely known header fields; it allows a site to control how caches handle their data in CDNs, browsers, and elsewhere

The HTTP community has been busy modernizing the web’s protocol over the last decade, with multiple revisions of the core specification, a number of extensions, HTTP/2, and now HTTP/…

Content delivery networks (CDNs) have been around for a long time, but they’re not all built in the same way. While Fastly’s edge cloud platform goes beyond traditional content delivery…

CDNs all use HTTP caching to optimize performance, but sometimes different CDNs do it in slightly different ways and that can make things more complicated for our customers. This blog post…