信号器是否为同一应用程序内的每个集线器创建连接，或者所有集线器共享相同的连接？
Does signalr create connection for each hub inside same app or all the hubs share same connection?
如果答案是每个集线器都有自己的连接，那么这些连接到底有多贵，假设我们有 3 个集线器连接 3 万个用户，如果我将它们减少到一个集线器真的会有性能提升吗？
Each connection object that you create encapsulates information about
a connection to a SignalR service that contains one or more Hub
classes. To communicate with a Hub class, you use a proxy object which
you create yourself (if you're not using the generated proxy) or which
is generated for you.
All clients will use the same URL to establish a SignalR connection
with your service ("/signalr" or your custom URL if you specified
one), and that connection is used for all Hubs defined by the service.
如果答案是每个集线器都有自己的连接，那么这些连接到底有多贵，假设我们有 3 个集线器连接 3 万个用户，如果我将它们减少到一个集线器真的会有性能提升吗？
Each connection object that you create encapsulates information about a connection to a SignalR service that contains one or more Hub classes. To communicate with a Hub class, you use a proxy object which you create yourself (if you're not using the generated proxy) or which is generated for you.
All clients will use the same URL to establish a SignalR connection with your service ("/signalr" or your custom URL if you specified one), and that connection is used for all Hubs defined by the service.