Reegine polling system

[iscifoni]

his is a reengine proposal.

Goal

• To decrease traffic on redis server.
  AS IS
  today every client executes an info command to redis server.

We can achieve this goal using SignalR hub. A single instance will execute an info command on redis and will send the response to all clients on SignalR hub. In this way we'll can optimize the number of connections to Redis server (by adopting signalr there will be always 1 connection).

@engineering87 what do you think?