Redis in Pub/Sub is quite lightweight in fact. It's just a TCP connection between your application and the Redis database. Once opened, you can get notifications almost for free.
I was thinking on adding a separate HTTP API to control the load balancer that would read and write to Redis, notifying the load balancer when changes should be applied.
I was thinking on adding a separate HTTP API to control the load balancer that would read and write to Redis, notifying the load balancer when changes should be applied.