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If you've ever been browsing the internet and noticed how quickly and seamlessly websites load, you might be surprised to know that it's not just your internet connection that's responsible. Behind the scenes, a complex network of servers and routing…

What is HTTP/2? HTTP/2 is the second major version update to the HTTP protocol since HTTP/1.1 which was released more than 15 years ago. The HTTP/2 protocol was developed due to the ever-evolving digital world and the need to load more resource…

Have you ever experienced slow website loading times? Or maybe you've encountered a frustrating delay when streaming videos online? These issues can be caused by various factors, but one possible culprit is the protocol used to transfer data between…

What is OCSP stapling? OCSP stapling is an alternative approach to the original Online Certificate Status Protocol (OCSP) for determining whether an SSL certificate is valid or not. It does this by allowing the web server to query the OCSP responder…

What is HTTP Keep-Alive? Keep-Alive is an HTTP header that allows for the connection between a browser and a server to stay open, allowing the transfer of multiple files over a single connection. Without the HTTP Keep-Alive header, a new TCP…

One of the most important HTTP headers is the Vary header. Depending on your setup, this must be configured to ensure the right content is delivered to the right browser. When requesting content, browsers include HTTP headers to let the server decide…

RUM, also known as, real user monitoring, is an approach to capturing and analyzing every user interaction on your website. It is a form of passive monitoring that determines whether or not users are being served quickly. If the system determines…

HAR, short for HTTP Archive, is a format used for tracking information between a web browser and a website. A HAR file is primarily used for identifying performance issues, such as bottlenecks and slow load times, and page rendering problems. The HAR…