ClusterInvalidator implementation based on Redis replacing the SQL one.
To use it edit the repository contrib and add:
Invalidations are sent and received using the Redis pubsub messaging on the channel: nuxeo:inval:default:channel.
(default being the name of the repository)
There is a Redis HSET created for each Nuxeo node with the following key: nuxeo:inval:default:nodes:<nodeId>
The gain can be seen here (around x2) on heavy write operations: