Cluster and Ring pipelines process commands for each node in its own goroutine.
6.14
Added Options.MinIdleConns.
Added Options.MaxConnAge.
PoolStats.FreeConns is renamed to PoolStats.IdleConns.
Add Client.Do to simplify creating custom commands.
Add Cmd.String, Cmd.Int, Cmd.Int64, Cmd.Uint64, Cmd.Float64, and Cmd.Bool helpers.
Lower memory usage.
v6.13
Ring got new options called HashReplicas and Hash. It is recommended to set HashReplicas = 1000 for better keys distribution between shards.
Cluster client was optimized to use much less memory when reloading cluster state.
PubSub.ReceiveMessage is re-worked to not use ReceiveTimeout so it does not lose data when timeout occurres. In most cases it is recommended to use PubSub.Channel instead.