This commit represents a breaking change when the first occurrence of
"{}" is found in a key because it will produce a different hash than
previous versions of Predis, thus leading to a different partitioning.
If you really need to stick with the old behavior, you can subclass
Predis\Cluster\PredisStrategy and override extractKeyTag() using the
old implementation of this method and pass the strategy instance when
initializing the cluster connection via client options.
We also changed our wording to indentify this kind of abstraction so
instead of using "scripted commands" (kind of broken English) we now
use "scriptable commands".
Daniele Alessandri
Alexey Kupershtokh