Slava @ RethinkDB here.<p>The challenge with database systems is that essentially they&#x27;re complete runtimes -- the user can send a huge variety of queries which are programs that need to be executed by the runtime. So there is no way to fix performance once and for all -- it&#x27;s a continuous process that never stops. We&#x27;ve worked out a lot of performance issues since then, and keep working on them every day. For anyone reading this, if there is a particular workload that&#x27;s slow, please let us know and we&#x27;ll work to prioritize it ASAP.