问题描述
我是 Angular.js 和 Node.js 的初学者，但我意识到有两种可能的方法来制作实时应用程序.第一个是使用 Socket.io，另一个是使用带有 setInterval() 函数的 RESTful 作为客户端解决方案.我使用这两种替代方法构建了我的应用程序，但我不知道为什么使用一种替代另一种更好.
I'm beginner in Angular.js and Node.js, but I've realized that there are two possible ways to make real-time applications. The first is using Socket.io and the other is using RESTful with setInterval() function as a client-side solution. I built my application using both alternatives, but I don't know why it is better to use one instead the other.
我的控制器使用 Angular.js(Socket.io 替代方案):
My controller using Angular.js (Socket.io alternative):
function MyController($scope, socket) {
socket.on('test', function(data){
$scope.data = data;
console.log($scope.data);
});
}
我的控制器使用 Angular.js(RESTful 替代方案):
My controller using Angular.js (RESTful alternative):
function MyController($scope, $http) {
setInterval(function() {
$http.get('/test.json')
.success(function(data, status, headers, config) {
$scope.data = data;
console.log($scope.data);
});
}, 1000);
}
这些做事方式之间有什么区别?提前致谢！
What would be the differences between these ways of doing things?Thanks in advance!
推荐答案
如果您想要一个完全实时的 Web 应用程序，那么套接字是不二之选.Socket.io 或 SockJS 都是非常好的客户端.当不支持网络套接字时，它们有能力优雅地降级，不过，您可以选择想要使用的传输方式.
If you want a fully real-time web application, then sockets are the way to go. Socket.io or SockJS are both extremely good clients. They have the ability to degrade gracefully when web sockets aren't supported, though, you may choose which transportation method you'd like to use.
您必须构建数据订阅服务，以便在所有用户之间传播更改.Tower.js 和 Meteor 都使用反应式方法，并且在模型更改时使用事件侦听器.根据您想要此功能的复杂程度或强大程度，它们将有不同的可用实现.
You'll have to build a data subscription service for changes to be propagated between all users. Tower.js and Meteor both use a reactive approach, and they use event listeners on model changes. Depending on how complex, or how powerful you want this feature, they'll be different implementations available.
尝试在同时连接的多个用户之间同步客户端和服务器端数据时，它确实变得越来越复杂.我建议您看看这两个框架，看看它们是如何工作的，并可能复制其中的一部分或全部功能.
It does become increasingly more complex when trying to sync client-side and server-side data across many users connected at once. I'd suggest you take a look at those two frameworks, see how they work, and possibly replicate parts of it, or all of it's functionality.
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