This clause logs statistics to Redis from all Radiator internal
objects. Statistics can later fetched from Redis for management
applications, log transport agents, such as logstash Redis input plugin,
or other use. The statistics are currently logged in JSON format. StatsLog
REDIS uses GossipRedis for communicating with a Redis server. For more
information, see Section 3.133. <GossipRedis>.
There is an example configuration file in
goodies/statslog.cfg.