web app mvc
DESCRIPTION
TRANSCRIPT
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