I’ve long been a fan of this sort of thing — see https://github.com/apache/couchdb/issues/1338for an example ☺️
Many of the node types are not really specific to the 4.0 architecture. I don’t know if anyone will be interested in backporting to the classic architecture, but API nodes, replicator nodes, etc. would definitely be relevant in 3.x. Adam > On Nov 19, 2019, at 11:54 AM, Nick Vatamaniuc <vatam...@gmail.com> wrote: > > >> Isn’t it an approach used by Couchbase? > https://docs.couchbase.com/server/current/clustersetup/services-mds.html > > Thanks for the link. From taking a quick look over it, I think it is? > Though I am not familiar with exact terminology like "index" vs > "query" service in that context.