*IMPORTANT* Please remember to close after using
jedis who is a connection for a given key
initialHost's auth
selected db number
host whose slots should involve key
any redis endpoint of a cluster or a single server
list of nodes
start slot number
end slot number
a list of RedisNode whose slots union [sPos, ePos] is not null
RedisConfig holds the state of the cluster nodes, and uses consistent hashing to map keys to nodes