The devops issues aren't a valid counter-point. Tuning an RDBMS is an art. It's much easier to scale a ephemeral search service than a transactional database.

The devops issues aren't a valid counter-point. Tuning an RDBMS is an art. It's much easier to scale a ephemeral search service than a transactional database. Likely even one search node will support a higher query throughput.