Testing later today. Thanks @U1C36HC6N

(with-out-str (time (d/pull-many @conn [:db/id :url-link :noted] (range 10 400))))
; => "Elapsed time: 7.547708 msecs"

😄

You can think of this function as a compatibility check between the configuration you supply and the one that has been used to create the database. Changing cache sizes should be fine, since they are only runtime caches right now.