google app engine - Use of memcache with NDB -

i'm going db ndb , have little doubt.

i've read caching docs need clarification or confirmation: db using memcache save "views" , avoid hitting datastore. ndb "caches" entities reads , writes, but, read can do?

e.g.: items = item.query().fetch(100) gives me items. query cached ndb automatically? if 2 users wants see items in list, second read hit ndb cache?

ndb caches get() calls, fetch entities key.

queries not cached.