Simple LB is the simplest Load Balancer ever created.
It uses RoundRobin algorithm to send requests into set of backends and support retries too.
It also performs active cleaning and passive recovery for unhealthy backends.
Since its simple it assume if / is reachable for any host its available
How to use
Usage: -backends string Load balanced backends, use commas to separate -port int Port to serve (default 3030)
To add followings as load balanced backends