Docs definitely have rooms for improvement. Architecturally, It is easier to visualize this two big group: - query serving: coordinator, historical, broker -

Docs definitely have rooms for improvement. Architecturally, It is easier to visualize this two big group: - query serving: coordinator, historical, broker - ingestion: overlord, middlemanager router unifies all of Druid API together. I would start with the Helm chart to get some basic idea on tunings.