The preconnect HTML hint allows the application to tell the browser which sockets it will need ahead of initiating the actual requests; preconnect eliminates DNS, TCP, and TLS roundtrips from the request's critical path.| www.igvita.com
TLS is not slow, it's unoptimized. A hands-on tour of optimizing nginx to deliver one-RTT Time To First Byte (TTFB) with TLS.| www.igvita.com
Page transfer size is not normally distributed. There is no 'average page' and mobile pages are more similar to desktop pages than you think. Let's dig into the data...| www.igvita.com
You cannot rely on pagehide, beforeunload, and unload events to fire on mobile platforms. This is not a bug in your favorite browser; this is due to how all mobile operating systems work. Use Page Visibility API.| www.igvita.com
Script-injected scripts block on CSS and delay script execution. Their era has passed, and we now have a much better, cleaner, and faster solution: add an async attribute to your script tags.| www.igvita.com