Orleans学习总结(一)

A straightforward approach to building distributed, high-scale applications in .NET

一个简单直接的大规模分布式的.Net应用

Orleans is a framework that provides a straightforward approach to building distributed high-scale computing applications, without the need to learn and apply complex concurrency or other scaling patterns. It was created by Microsoft Research and designed for use in the cloud.

Orleans 是一个提供简单直接的大规模分布式的计算应用，而不需要去了解复杂的高并发和其他相关。由微软研究和设计用于云端。

Orleans has been used extensively in Microsoft Azure by several Microsoft product groups, most notably by 343 Industries as a platform for all of Halo 4 and Halo 5 cloud services, as well as by a growing number of other companies.

Orleans 已经被几个微软的产品组用在Microsoft Azure云。值得一提的就是343公司《光环4》和《光环5》的云平台服务，和越来越多的其他公司

Orleans as a Stateful Middle Tier

Orleans 作为一个有状态的中间层

Orleans provides an intuitive way of building a stateful middle tier, where various business logic entities appear as sea of isolated globally addressable .NET objects (grains) of different application defined types distributed across a cluster of servers (silos).

Orleans提供一个直观的方式建造一个有状态的中间层，各种业务逻辑对象存在于一个可以全局定位的独立的不通应用类型.NET对象 的集群海洋里。

二、用法

public interface IMyGrain : IGrainWithStringKey
{
    Task<string> SayHello(string name);
}

public class MyGrain : IMyGrain
{
    public Task<string> SayHello(string name)
    {
        return Task.FromResult($"Hello {name}");
    }
}

var grain = GrainClient.GrainFactory.GetGrain<IMyGrain>("grain1");
await grain.SayHello("World");