在多个服务器上扩展Socket.IO [英] Scaling Socket.IO across multiple servers

问题描述

我一直在寻找关于为Node.js Socket.IO安装设置多服务器集群的帮助。这是我想要做的：

• 在F5负载均衡器中拥有1个VIP，指向 n 运行Express的节点服务器数量和Socket.IO


• 让客户端通过 io.connect 然后将其过滤到负载平衡器后面的一个服务器。


• 当这些服务器中的任一个发送消息时，将发送给正在监听的所有用户例如 - 如果我们在LB1（F5）后面有服务器A，服务器B和服务器C，那么该事件将通过其他服务器连接。

< ），用户A连接到服务器A，用户B连接到服务器B，用户C连接到服务器C。

在聊天场景中 - 基本上如果从服务器A发送消息到消息事件 - 服务器B和C也应该将消息发送到连接的客户端。我读到这是可以使用 socket-io.redis ，但它需要一个Redis框 - 哪个服务器应该安装？如果所有服务器都连接到相同的Redis框 - 这是否会自动工作？

  var io = require（'socket.io '）（服务器）; 
 var redis = require（'socket.io-redis'）; 
 io.adapter（redis（{host：'localhost'，port：6379}））; 
  

任何帮助都将非常感谢！

解决方案

这个问题的答案是你必须设置一个单独的Redis服务器，它不在SocketIO群集之外，并且所有节点都连接到它。

然后你只需将它添加到你的代码的顶部，它只是神奇地工作没有任何问题。

  var io = require（'socket.io'）（server）; 
 var redis = require（'socket.io-redis'）; 
 io.adapter（redis（{host：'localhost'，port：6379}））; 
  

I've been searching around looking for help on setting up a multi-server cluster for a Node.js Socket.IO install. This is what I am trying to do:

• Have 1 VIP in an F5 loadbalancer, pointing to n number of Node servers running Express, and Socket.IO
• Have client connect to that 1 VIP via io.connect and then have it filter to one the of the servers behind the loadbalancer.
• When a message is emitted on any one of those servers, it is is sent to all users who are listening for that event and connect via the other servers.

For example - if we have Server A, Server B and Server C behind LB1 (F5), and User A is connected to Server A, User B is connected to Server B and User C is connected to Server C.

In a "chat" scenario - basically if a message is emitted from Server A to message event - Server B and C should also send the message to their connected client. I read that this is possible with using socket-io.redis, but it needs a Redis box - which server should that be install on? If all the servers are connected to the same Redis box - does this work automatically?

var io = require('socket.io')(server);
var redis = require('socket.io-redis');
io.adapter(redis({ host: 'localhost', port: 6379 }));

Any help would be greatly appreciated thanks!

解决方案

The answer to this question is that you must set up a single Redis server that is either outside your SocketIO cluster - and have all nodes connect to it.

Then you simply add this at the top of your code and it just works magically without any issues.

var io = require('socket.io')(server);
var redis = require('socket.io-redis');
io.adapter(redis({ host: 'localhost', port: 6379 }));

这篇关于在多个服务器上扩展Socket.IO的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！