The Redis HA guide incorrectly states that sharding is supported by 3scale.

It is not possible to achieve this without some custom implementation using intermediate proxy solutions that provide Redis filters such as twemproxy, redis cluster proxy or envoy proxy. However, in any of these cases there is still some custom configuration the customer would be expected to perform to get this working and so our documentation is currently inaccurate and misleading so this should be removed entirely as 3scale does not support it out of the box.