October 9, 2014 3:52 am | 2 Comments A “webview” is a browser bundled inside of a mobile application producing what is called a hybrid app. Using a webview allows mobile apps to be built using Web technologies (HTML, JavaScript, CSS, etc.) but still package it as a native app and put it in the app store. In addition to allowing devs to work with familiar technologies, other advantages of building

May 9, 2013 12:05 am | 9 Comments [This blog post is based on my keynote at the HTML5 Developer Conference. The slides are available on SlideShare and as PPTX.] I enjoy evangelizing web performance because I enjoy things that are fast (and efficient). Apparently, I’m not the only one. Recent ad campaigns, especially for mobile, tout the virtues of being fast. Comcast uses the words “speed”, “fast

February 26, 2013 5:35 pm | 16 Comments Two performance best practices are to add a far future expiration date and to delay loading resources (esp. scripts) until after the onload event. But it turns out that the combination of these best practices leads to a situation where it’s hard for users to refresh resources. More specifically, hitting Reload (or even shift+Reload) doesn’t refresh these cac

February 16, 2013 11:22 am | 2 Comments Over the last two months I’ve been coding on the HTTP Archive. I blogged previously about DB enhancements and adding document flush. Much of this work was done in order to add several new metrics. I just finished adding charts for those stats and wanted to explain each one. Note: In this discussion I want to comment on how these metrics have trended over the