Dist Worker

DistWorker handles subscription routing and fan-out (read-heavy). It runs as a stateful service on the base-kv overlay cluster; store_name for API headers: dist.worker.

Default balancers

balancerFactory FQN	Role	Default parameters (load rules)
org.apache.bifromq.dist.worker.balance.RangeLeaderBalancerFactory	Spread range leaders evenly
org.apache.bifromq.dist.worker.balance.ReplicaCntBalancerFactory	Keep replica count per range to targets	- votersPerRange: 3 - learnersPerRange: -1

These defaults come from distWorkerConfig.balanceConfig.balancers in starter config.