title: Is there a way to share streams connections between gRPC servers
body: <p>I have multiple gRPC server instances run behind a load balancer and, a large number of clients each client subscribe to one of the instances.</p>
  <p>I have a use case when I need to stream a message from server to group of clients and am wondering can I store all the client's streams in central DB ie. Redis then when I want to stream a message one of the instances will fetch all the stream connections belonging to the clients' group and use them to send a message?</p>