If you've been uploading really high-resolution stuff to YouTube, you'll see a real payoff next week. That's when the video sharing service starts streaming videos in 1080p, wide-screen-TV-friendly, high-definition video
Yes, you read right—only Windows gets the graphics-card-powered HD acceleration for now. Even though that matches up nicely with YouTube's expected 1080p HD roll-out, it's a shame that Mac and Linux users get left out in the wilds of jerky video. All platforms get support for multi-touch, however, and tweaks that presumably make Flash a tad bit less of a resource hog.
So Google is developing a new protocol, dubbed SPDY pronounced speedy. SPDY is designed, from the ground up, to handle modern Web apps that transfer several smaller files. Without getting too technical, SPDY is able to handle multiple streams of data at once and prioritize on the fly. This means that if the background image of a site takes a long time to load, it doesnt stall the rest of the content from being fed to the browser. SPDY also compresses request and response data which asks for specific content and tells a browser what to display so that multiple requests can be sent at once using less bandwidth
Turn your Nginx server into a fully functional Comet server with the nginx_http_push_module plugin.
Instead of using a custom framework, Leo's plugin exposes two endpoints on your Nginx server: one for the subscribers, and one for the publisher. The clients open long-polling connections to a channel on the Nginx server and start waiting for data. Meanwhile, the publisher simply POST's the data to Nginx and the plugin then does all the heavy lifting for you by distributing the data to the waiting clients. This means that the publisher never actually serves the data directly, it is simply an event generator! It is hard to make it any simpler then that.