The datomic website says datomic requires jdk 7 or 8. Still true, or is website out of date? https://docs.datomic.com/on-prem/get-datomic.html

@puzzler On-Prem ?

https://forum.datomic.com/t/datomic-cloud-482-8794/1117

Also an important notice on the latest release:

https://forum.datomic.com/t/issue-with-t2-instances-important/1118

Is there a performance / speed benefit when querying on attributes that reference a :db/ident rather than a keyword attribute value? For example:

; schema
[
 ; installed :db/ident
 {:db/ident :season/winter}
 ; a reference attribute to point to the :season/winter :db/ident
 {:db/ident :year/season-ref :db/cardinality :db.cardinality/one :db/valueType :db.type/ref}
 ; a generic keyword attribute 
 {:db/ident :year/season-kw :db/cardinality :db.cardinality/one :db/valueType :db.type/keyword}
 ]

Changes link for latest free release is broke