How many subscribed topics is too much?
I am trying to understand the performance ramifications when I have many subscribed topics on a server per user. For example, if I have 10 different subscribed topics per user and there are 1000 users logged for each subscribed topic will this have a very huge performance impact?

How would one go about gauging the performance of this web socket activity? 

In addition, for each user i  am going to want to have that user subscribe to their individual topic so I can push a notification for that user. For example, if there is a message for that user then I want the notification to be pushed to that users subscribed topic. If I have 1000 users doing this is this going to be a huge issue on performance and bandwidth?
