Web App MVC

Jit Im Will 小问

Front

+

Back

JavaScript MVC+

Node.js MVC

Front

jQuery

MooTools

YUI

Prototype

ExtJS

Dojo

Mustache.js

Underscore.js

Backbone.js

Socket.iojQuery

Back

ExpressJS

Web.js

Connect

Underscore.js

Socket.io Backbone.js

JSData.jsMongoSkin

Web.js

前后端 MVC 交互传统/*PHP*/$result = mysql_query('SELECT name FROM users');while ($row = mysql_fetch_array($result)) { echo "<b>".$row['name']."</b>"; echo "<br/>";}

//jQuery$.get(location.origin + '/names.php') .done(function (data) { $('body').append(data); });

•服务器运算延迟！•HTTP 传输性能有限！•终端设备性能大大浪费！

高性能//Node.js with Web.js and MongoSkinvar getRouter = {

'names' : function (req, res, qs) {db.collection('names') .find({}) .toArray(function (err, names) {

res.sendJSON(names); })

}};

web.get(getRouter);

前后端 MVC 交互

前后端 MVC 交互高性能//jQuery, Mustache.js$.get(location.origin + '/names') .done(function (data) { var $names = JSON.parse(data); $.get(location.origin + '/tmlp/names.html') .done(function (data) { $html = Mustache.to_html(data, {names:$names}); $('body').append($html); }); });

终端性能• CPU 运算

– V8 来自 Google 的基于 C++ 的高性能 JavaScript 引擎

– Worker API 多线程 JavaScript 运行机制• GPU 硬件加速

– Canvas 绘图加速– Video API 解码加速– DOM 渲染加速

• 移动终端的超强交互性能

终端性能• 存储机制

– Cookies– localStorage– sessionStorage– Web SQL– Cache

• 交互机制– WebSocket– Message Model– Ajax Level 2– ……

不仅不能避免缓存，

而且要主动存储！

不要让 Web 成为

Long Polling 的天下！

服务端资源

￥ 5800 / 年

Xeon 双核， 1.5G 内存， 150G 存储空间，千兆带宽光纤

服务端资源

￥ 25500 元 / 年！

Xeon 八核， 16G 内存， 750G 存储空间，千兆带宽光纤

服务器资源• HTTP 资源• TCP 资源• LAN 资源• 存储资源• 内存资源• 数据库资源• CPU 资源• ……

NoSQL

垂直查询 异步通信关系链

线程运算垂直查询关系链

异步通信

NoSQL

NoSQL

关系链

前后端优化

Quick Simple Light MVC

高速架构

NoSQL

数据模型

JSON

轻量传输

JavaScript — 因为不严谨而飞速发展的脚本语言

Node.js — 基于不严谨的强悍服务器

Web.js — 基于简易的高性能Node.js 开发框架

require('webjs').run()

Simple Deployment

File System

//ExpressJSvar app = require('express').createServer();app.get('/*', function (req, res) {

res.sendfile(req.get('content-disposition', 'filename'));});app.listen(80);

//Web.jsrequire('webjs').run()

//Node.jsvar http = require('http'), fs = require('fs');………server.on('request', function (req, res) {………}).listen(80);

Node.js MVC

MModel

var Person = Backbone.Model.extend({ sayHello : function () { console.log(this.get('name')); }});

var me = new Person({name: 'Will'});

me.sayHello(); // -> 'Will'

var People = Backbone.Collection.extend({ sayHello : function () { this.map(function (person) { return this.get('name') + 'say: "Hello, I`m ' + this.get('name') + '."\n'; }); }});var w3ctech = new People;w3ctech.add({name: 'Will'}, {name: 'Foo'}, {name: 'Bar'});w3ctech.sayHello(); /** -> Will say: "Hello, I`m Will."

* Foo say: "Hello, I`m Foo." * Bar say: "Hello, I`m Bar." **/

VView

{Mustache.js

Mustache.js

<table> <tbody> {{#peoples}} {{#Man}} <tr> <td>{{Name}}</td> <td>{{Age}}</td> <td>{{Sex}}</td> </tr> {{/Man}} {{/peoples}} </tbody></table>

模版

Mustache.jsvar obj = {

peoples : [{ Name: 'Will',

Age: 15,Sex: 'Man'},

{ Name: 'Foo',Age: 30,Sex: 'Woman'},

{ Name: 'Bar',Age: 18,Sex: 'Man'}],

Man : function () {if (this.Sex == 'Man') {

return function (text, render) {render(text);

}}

}};

对象

Web.js with Mustache.js

var getRouter = { '^mans' : function (req, res, qs) { mansHtml = web.render('mans', obj);

res.send(mansHtml);}

};web.set('tmplDir', 'tmlps') .get(getRouter);

CController

Web.js

var postRouter = {

'seturlrouter': function (req, res, qs){

web.get({qs.key : qs.value});

res.send('Set success');

}

};

web.post(postRouter);

JavaScript MVC

//For IE

function parseQs() {

var qs = (location.search > 0 ? location.search.substring(1) : ''),

params = {},

items = qs.split("&"),

_item = null;

for (var i = 0; i < items.length; i++) {

item = items[i];

params[decodeURIComponent(item[0])] = decodeURIComponent(item[1]);

}

return params;

}

location.qs = parseOs();

JavaScript MVC

JavaScript MVC

//For Chrome, FireFox and more

location.__defineGetter__('qs', function() {

var qs = (location.search > 0 ? location.search.substring(1) : ''),

params = {},

items = qs.split("&"),

_item = null;

for (var i = 0; i < items.length; i++) {

item = items[i];

params[decodeURIComponent(item[0])] = decodeURIComponent(item[1]);

}

return params;

});

JavaScript MVC(function ($) {

$.getScript(location.origin + '/js/web-client.js'); //Web.js for Client

var getRouter = {'getsomething' : function () {

$('body').append(web.getData('something')

.render('someTmpl'));

}};web.conn(location.origin)

.get(getRouter)})(jQuery);

Page

JavaScript MVC

Node.js

3.Data Trans

2.Page Action Router

1.Server Router

http://www.iwillwen.comhttps://github.com/iwillwen/Web.js

Q&A