本节介绍了路由器的一些更高级的功能和处理复杂异步逻辑的能力. 一.A word on promises 1. 在Ember的Router中Ember使用了大量的Promises概念来处理异步逻辑.简而言之,promises就是一个代表最终值的对象.一个promise可以fulfill(成功解析值)或者reject(解析值失败). 2. 检索这个最终值的方法或者当promise reject的时候处理这些情况是通过promise的then方法.then方法接受两个可选的回调,一个是为了fulfil…

http://www.cnblogs.com/HuiTai/archive/2012/07/24/2597875.html 接着前面继续学习分享我们的路由. 现在我们把Global.asax文件里的RegisterRoutes方法还原至原来的样式,具体代码如下: using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; using Syste…

Source routing Followed by book_Principles and Practices of Interconnection Networks, p204. With source routing, all routing decisions for a packet are made entirely in the source terminal by table lookup of a precomputed route. Each source node cont…

BACKGROUND OF THE INVENTION FIG. 1A is a simplified block diagram schematically representing a typical prior art network router 10. Packet forwarding router 10 includes two major subsystems: control plane 12 and data plane 11. Data plane 11 provides…

In one embodiment, a computing device (e.g., border router or network management server) transmits a discovery message into a computer network, such as in response to a given trigger. In response to the discovery message, the device receives a unicas…

In one embodiment, a local node in a communication network determines a set of its neighbor nodes, and determines a respective occurrence frequency at which each particular neighbor node is to be probed based on a rate of change in distance between t…

当索引一个文档的时候,文档会被存储到一个主分片中. Elasticsearch 如何知道一个文档应该存放到哪个分片中呢?当我们创建文档时,它如何决定这个文档应当被存储在分片 1 还是分片 2 中呢?首先这肯定不会是随机的,否则将来要获取文档的时候我们就不知道从何处寻找了.实际上,这个过程是根据下面这个公式决定的:shard_num = hash(routing) % number_of_primary_shardsrouting 是一个可变值,默认是文档的 _id ,也可以设置成一个自定义的值.…

How endless looping of packets in a TCP/IP network might occur? Router is a device used to interconnect two or more computer networks and routing is the process of properly, forwarding traffic between related computer networks. Endless looping of pac…

由于线上elasticsearch集群数据量越来越大,优化已经已经是重中之重. 优化的方式有很多中,网上一大堆,自行百度. 优化方案中有个叫routing的方案是个需要熟悉业务日志才能使用.于是我就研究了routing方式. 网上有一大堆routing 的方法.但是大部分都是在mapping中加入_routing,required,path等参数工作的,但是我使用后发现有错误.如下: reason": Mapping definition for [_routing] has unsupport…

Routing在ASP.NET MVC中是非常核心的技术,属于ASP.NET MVC几大核心技术之一,在使用Routing之前,得先引入System.Web.Routing,但其实不用这么麻烦,因为在创建ASP.NET MVC项目时,编译器已经自动添加该引入了. 首先来看看Routing有什么能力使得它是ASP.NET MVC的几大技术之一,即Routing的两大作用: 1.在客户端浏览器将URL提交到服务器后,先经过Routing,Routing把URL(如:http://localhost:…