Which CDN providers support stale-while-revalidate?
Last week, I talked about the benefits of and how you can test for stale-while-revalidate support (RFC 5861). This week, I’ve done the testing for you.
Hypertext
FeedThe web runs on a really powerful protocol,which is often misunderstood and underused. Here I explore the Hyper Text Transfer Protocol to help you make better websites.
How-to test for HTTP stale-while-revalidate support?
stale-while-revalidate is a useful extension to the HTTP Cache-Control response header. The header instructs intermediary caches that they can fulfill requests by returning resources that have expired from the cache for some additional time. The cache can then…
Save-Data aware HTTP/2 server push
Server initiated push is a new feature in HTTP/2 that can greatly improve page load performance by pushing critical resources to the client without requiring the client to request the download first. The only caveat by preemptively pushing…
Accelerate redirects with HTTP/2 server push
You can achieve low-latency responses to redirects with HTTP/2 by pushing the resource at the redirected location along with the response that informs the web browser about the redirect. It’s even easy to setup.
How caching affects internet connectivity tests
Windows 8.1 and older did a better job of detecting “captive portals” (Wi-Fi networks that require logins) and determining whether the state of a computer’s internet connection than Windows 10. Android has never been good at it. I…
Embed a JavaScript CDN in your web browser with Decentraleyes
Decentraleyes is a browser extension for Mozilla Firefox and Google Chrome that acts as a content delivery network (CDN) for popular JavaScript libraries right from within your own browser. This reduces page load times and bandwidth costs as…
Do private bug trackers leak data on security vulnerabilities and other known issues?
Private bug trackers disclose data about bug reports to any website that publishes information about security vulnerabilities or other issues that affect the organization.
New Save-Data HTTP header tells websites to reduce their data usage
Some users are okay with a slightly degraded user experience and lower image quality in exchange for lower data usage and costs savings. There haven’t been a standard way of letting websites know about this preference before, but…
Network speed testing apps on Windows 10: Ookla or Microsoft?
Which is the better network speed testing app for Windows: Microsoft Network Speed Test or Ookla Speedtest? One wins by default as the other is entirely incompetent and created without much knowledge of decades old technologies!
How-to use the same Host header for origin and proxy server using Apache mod_proxy
An origin server should use the same hostname as any [caching] reverse-proxy gateways that are made available to the public web. Otherwise, you can end up leaking the hostname or IP address of the origin server, and get…