General Strategies and CRP Diagrams

General Strategies and CRP Diagrams

INSTRUCTOR NOTE:

Learn more about optimizing the Critical Rendering Path
Review the Critical Rendering Path performance patterns

The script tag can also take a defer attribute, in the same way that it can take an async attribute. The difference is that with defer, the script waits to execute until after the document has been parsed, whereas async lets the script run in the background while the document is being parsed. Learn more about the script tag here.

Check out the PageSpeed mobile analysis documentation on guidance for how to deliver a page that can be rendered in one second or less. To learn more about TCP Slow Start, check out Ilya's book, High Performance Browser Networking.

At the end of the course, you'll find a tough bonus question on TCP slow start. Give it a shot if you want to learn the math behind calculating how long files will take to download with TCP slow start.

Follow your instructors!

+Ilya Grigorik, @igrigorik

@cwpittman