node.js version inspired by igrigorik's any ruby object, as a webapp! 'cause we can too.

README.js

#!/usr/bin/env node

var http = require('http')
  , webapp = require('webapp');

http.createServer(webapp.bind([])).listen(8000);
//                ^^^^^^^^^^^^^^^
//                       |            (x)
//                  ROFLSCALE DEQUE ---/

// http://localhost:8000/push/1    -> 1
// http://localhost:8000/push/2/3  -> 3
// http://localhost:8000/unshift/4 -> 4

// http://localhost:8000/          -> [ "4", "1", "2", "3" ]

// http://localhost:8000/pop       -> "3"
// http://localhost:8000/shift     -> "4"

function Thing() { }
Thing.prototype.set = function(k, v) { return this[k] = v; };
Thing.prototype.get = function(k) { return this[k]; };
http.createServer(webapp.bind(new Thing())).listen(8001);
//                ^^^^^^^^^^^^^^^^^^^^^^^^
//                            |               (x)
//                       ROFLSCALE NOSQL DB ---/

// http://localhost:8001/set/name/joe -> "joe"
// http://localhost:8001/set/age/30   -> "30"

// http://localhost:8001/             -> {"name":"joe","age":"30"}

// http://localhost:8001/get/age      -> "30"

package.json

{
  "name": "webapp",
  "version": "0.0.2",
  "author": "visnup <visnupx@gmail.com> (http://visnup.com)",
  "main": "./webapp.js",
  "engines": {
    "node": "*"
  },
  "directories": {
    "lib": "."
  },
  "files": [
    ""
  ],
  "description": "Make a webapp out of anything",
  "homepage": "https://gist.github.com/700995",
  "repository": {
    "type": "git",
    "url": "git@gist.github.com:700995.git"
  }
}

webapp.js

module.exports = function webapp(req, res) {
  var s = 200, path = req.url.split('/'), r;
  try { r = path[1] === '' ? this : this[path[1]].apply(this, path.slice(2)); }
  catch(e) { s = 500; r = e; }
  res.writeHead(s, { 'Content-Type': 'application/json' });
  res.end(JSON.stringify(r));
};

It's missing the roflcopter! :)

brought back by popular demand!

fyi, roflscale = ~500 pushes before "writes" get slow..