signalR redis分布式聊天服务器搭建
最近在搞一个直播项目需要聊天服务器，之前是以小打小闹来做的，并没有想太多就只有一台服务器。前几天一下子突然来了5000人，服务器瞬间gg，作为开发人员的我很尴尬！ 这就是我们这篇文章的背景。
我使用的是C# Mvc4.0 来开发的，这里还需要一个redis 至于你是windows版本还是Linux版本我就不管了，反正是要有个地址一个端口，密码根据实际情况填写。
我这里用一个demo来展现分布式的情况https://git.oschina.net/908Sharp/signalR-multi-Server.git
***步：新建两mvc项目
从nuget 中添加以下几个包
Install-Package Microsoft.AspNet.SignalR
Install-Package Microsoft.AspNet.SignalR.Redis
install-package Microsoft.Owin.Cors
第二步：在App_Start目录中添加Owin StartUp类
public void Configuration(IAppBuilder app)
{
GlobalHost.DependencyResolver.UseRedis("127.0.0.1", 6379, string.Empty, "SignalRBus");
app.Map("/signalr", map =>
{
map.UseCors(CorsOptions.AllowAll);var hubConfiguration = new HubConfiguration
{
EnableJSONP = true
};
map.RunSignalR(hubConfiguration);
});
}注意引用的包啊，骚年们。
第三步：添加ChatHub 类
[HubName("chat")]
public class ChatHub:Hub
{
public void Chat(string msg)
{
Clients.All.Display("Receive Msg:" + msg);
}}
后端就算完成了。
第四步：前端页面的创建
<script src="/Scripts/hub.js"></script>
/*
signalr
1、初始化聊天服务器
*/
conn = $.hubConnection();
conn.qs = {
};
conn.start().done(function () {
console.log(signalr success);
$(#btn).click(function () {
var msg = $(#msg).val();
chat.invoke("Chat", msg)
.done(function () {
console.log(signalr send success);
$(#msg).val();
})
.fail(function (e) {
console.log(signalr send fail);
});
})
});
chat = conn.createHubProxy("chat");
chat.on("Display", function (msg) {
$(#chat-content).html($(#chat-content).html() + + msg)
});
</script>记住我上面说的demo是两个站哦，代码都一样的，正式环境的时候我们肯定是一份代码在不同服务器上部署，指向同一个redis地址
***我说一下<script src="/Scripts/hub.js"></script> 这个东西是自动生成的，你也可以手动指定，我还是把代码贴出来吧。你也可以F12自己去看。
/*!
* ASP.NET SignalR JavaScript Library v2.2.1
* http://signalr.net/
*
* Copyright (c) .NET Foundation. All rights reserved.
* Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
*
*////
///
(function ($, window, undefined) {
///
"use strict";if (typeof ($.signalR) !== "function") {
throw new Error("SignalR: SignalR is not loaded. Please ensure jquery.signalR-x.js is referenced before ~/signalr/js.");
}var signalR = $.signalR;
function makeProxyCallback(hub, callback) {
return function () {
// Call the client hub method
callback.apply(hub, $.makeArray(arguments));
};
}function registerHubProxies(instance, shouldSubscribe) {
var key, hub, memberKey, memberValue, subscriptionMethod;for (key in instance) {
if (instance.hasOwnProperty(key)) {
hub = instance[key];if (!(hub.hubName)) {
// Not a client hub
continue;
}if (shouldSubscribe) {
// We want to subscribe to the hub events
subscriptionMethod = hub.on;
} else {
// We want to unsubscribe from the hub events
subscriptionMethod = hub.off;
}// Loop through all members on the hub and find client hub functions to subscribe/unsubscribe
for (memberKey in hub.client) {
if (hub.client.hasOwnProperty(memberKey)) {
memberValue = hub.client[memberKey];if (!$.isFunction(memberValue)) {
// Not a client hub function
continue;
}subscriptionMethod.call(hub, memberKey, makeProxyCallback(hub, memberValue));
}
}
}
}
}$.hubConnection.prototype.createHubProxies = function () {
var proxies = {};
this.starting(function () {
// Register the hub proxies as subscribed
// (instance, shouldSubscribe)
registerHubProxies(proxies, true);this._registerSubscribedHubs();
}).disconnected(function () {
// Unsubscribe all hub proxies when we "disconnect". This is to ensure that we do not re-add functional call backs.
// (instance, shouldSubscribe)
registerHubProxies(proxies, false);
});proxies[chat] = this.createHubProxy(chat);
proxies[chat].client = {};
proxies[chat].server = {
send: function (message) {
return proxies[chat].invoke.apply(proxies[chat], $.merge(["send"], $.makeArray(arguments)));
},sendOne: function (toUserId, message) {
return proxies[chat].invoke.apply(proxies[chat], $.merge(["sendOne"], $.makeArray(arguments)));
}
};return proxies;
};signalR.hub = $.hubConnection("/signalr", { useDefaultPath: false });
$.extend(signalR, signalR.hub.createHubProxies());}(window.jQuery, window));
这一块是你要是想指定具体路径也是可以的哦，但是要在后台写这么一句话
结束。
我也刚刚写完，还没有放到正式环境去用，哈哈哈，捂嘴偷笑，吐血了吗？ 现在我担心我们windows版本的redis不稳定。
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