One Weird Trick to Switch from Polling to Push—with Zero Downtime!

Pivotal Tracker is an always-up-to-date tool that you leave open all day. When Tracker was young, the only way to accomplish that was some variation of HTTP polling. But the web has evolved since then, and so have the protocols. Websockets are supported by every major browser, and server-sent events are supported by most (with hacks for ones that don’t). Push technologies are a viable option for change propagation. Read more...