Better Browser Caching is More Important than No Javascript or Fast Networks for HTTP Performance
Wednesday, January 30, 2013 at 9:30AM
Todd Hoff in Performance, Strategy

Performance guru Steve Souders gave his keynote presentation, Cache is King! (slides), at the HTML5DevCon, besides being an extremely clear explanation of how caching works on the Internet and how to optimize your use of HTTP to get the best performance, Steve ran experiments that found some surprising results on what gave the best web site performance improvements.

In his base line test, page loads took 7.65 seconds (median of three runs). What change--Fast Network, No Javascript, or Primed Cache--would make the biggest performance improvement? It was Primed Cache.

The implication being that caching is important so you must understand how HTTP caching works and how to make the best use of it. That's the rest of the talk.

Some key takeaways: 

Some room for improvement:

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