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MVC framework making it easy to write realtime, collaborative applications that run in both Node.js and browsers

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README.md

Derby

Derby is a reactive MVC framework for writing realtime applications in Node.js. It leverages Racer to automatically sync model data among all clients and servers, and it automatically binds models and views based on logic-less templates.

Derby not only simplifies writing applications, it also makes them load as fast as a static web page. Traditional web frameworks, such as Rails, Django, and PHP, render application views on the server. This approach provides fast load times but complicates adding interactivity in the browser. Often, code written with these frameworks eventually turns into a mess of complex, interdependent server code that renders an initial state and jQuery, Prototype, etc. code that manipulates state in the browser.

To avoid this problem, most interactive web application frameworks, such as SproutCore, YUI, Dojo, Google Closure, GWT, etc., render applications entirely in the browser. In this architecture, the server mostly sends resources and data back and forth. This makes writing complex apps a lot easier, but it also means that as a code base becomes more complex, page loads get slower and slower. It also can make it difficult for search engines to index such pages.

Racer and Derby are both designed to run the same code equally well on the server and client from the get-go. This means that applications are rendered into HTML on the server and also include the code to update the page as things change in realtime. Thus, pages load quickly, provide immediate interaction, and continue to work offline.

Disclaimer

Neither Derby nor Racer are ready for use, so please do not report bugs or contribute pull requests yet. Lots of the code is being actively rewritten, and the API is likely to change substantially.

If you have feedback, ideas, or suggestions, feel free to leave them on the wiki. If you are interested in contributing, please reach out to Brian and Nate first.

Demos

Chat

http://chat.derbyjs.com/lobby

A very simple chat demo. Note that as you edit your name, it updates in realtime. Check out the source in the examples directory to see how these bindings are created automatically.

Usage

Like, Racer, Derby is not fully baked yet. It only has the basic structure and enough specifics to handle the chat demo. More will come soon!

MIT License

Copyright (c) 2011 by Nate Smith and Brian Noguchi

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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