signalR的集群與負載均衡

signalR是相當不錯的websocket應用，最近要做集群和負載均衡

主要用到了redis進行集群，signalR的backplane集成redis。

細節，訂閱redis之后注意database號

再使用nginx進行負載均衡。

細節，設置websocket（我是用websocket的傳輸）的配置參數，Upgrade 頭的處理

http {
    map $http_upgrade $connection_upgrade {
        default upgrade;
        '' close;
    }

    upstream websocket {
        server 192.168.100.10:8010;
    }

    server {
        listen 8020;
        location / {
            proxy_pass http://websocket;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection $connection_upgrade;
        }
    }
}

參考文章如下：

https://docs.microsoft.com/en-us/aspnet/signalr/overview/performance/scaleout-with-redis
https://www.nginx.com/blog/websocket-nginx/
http://www.cnblogs.com/liqiao/p/4396194.html