Getting Started With Node.js and mongoDB

“Evented I/O for V8 Javascript” – http://nodejs.org
Application engine for “scalable network applications”

Really freaking fast:

One process, zero* threads

(Almost) no blocking

High concurrency with low overhead

No thread swapping or context switching

Applications must be designed from the ground up to
not block on I/O, CPU-intensive work, etc.



A full-stack web framework (a la Ruby on Rails)

But! you can get there:

ExpressJS: (http://expressjs.com/
) (Web framework
with MongoDB support built in - similar to Sinatra)

http://github.com/senchalabs/connect
(Rack-like
middleware for Node and Express)

haml.js: http://github.com/visionmedia/haml.js
(Pure
js implementation of HAML)

Great at sending large static files concurrently. (use
nginx.)

Buffer implementation in recent versions improves
this dramatically: http://nodejs.org/jsconf2010.pdf
Completely non-blocking.

CPU-intensive stuff will still block you (do it in a
worker process).

Some system calls (executed in a thread pool)



Great together! Both:

speak Javascript

understand JSON documents

are freaking fast.

So, what should you build?

You can build: Standard n-tier web applications

Great way to learn mongoDB and Node

Go build a blog engine! (Everyone does.)

Lots of libraries to help you get started: ExpressJS,
Connect, etc.

You should build:

Applications requiring high throughput and
concurrency

Applications with real-time needs

Applications with long-polling connections

Real-time multiuser chat

Web or log analytics (e.g. Hummingbird)

如果你觉得很完美那继续阅读：http://www.slideshare.net/ggoodale/getting-started-with-mongodb-and-nodejs