Went to Yahoo developer meetup last week. Nicholas Zakas was the speaker that talked about how to build a scalable javascript application. There are some key points I’d like to share. First is the overall architecture diagram. Nicholas mentioned loose coupling is important to make an application scalable. A loosely coupled system is one in which each of its components has, or makes use of, little or no knowledge of the definitions of other separate components. Only the base library knows which browser is being used. Only the application core knows which base library is being used Only the sandbox knows which application core is being used The modules know nothing except that the sandbox exists No part knows about the web application The advantages of such system are Multiple different applications can be created with the same framework. Each part can be tested separately. Replace any parts do not break the application. The following link is Nicholas’ fu