NowJS, SocketIO and Pusher.com

Question

What are pros and cons for NowJS, SocketIO and PusherApp ?

Favorite Client Language: JS

Favorite Server Language: NodeJS

Answer 1

Socket.io

Pro:

• Uses your favorite languages.
• Do it yourself solution. Could also be con.

Cons:

• Scaling could be problem. For example users have memory leaks when using websockets. Also does not have proper support(yet) if you want to scale to multiple CPU's/boxes.

nowjs

nowJS uses socket.io to provide RPC-library.

Pro:

• Simpler to use sometimes I guess.
• Uses your favorite languages.

Cons:

• Some scaling problem as socket.io

Pusher

Pro:

• Scaling easier.

Cons:

• Costs money when you get big. Maybe to much?