From the FAQ (http://www.datomic.com/faq.html http://www.datomic.com/faq.html): When is Datomic not a good fit? Datomic is not a good fit if you need unlimited

From the FAQ (http://www.datomic.com/faq.html http://www.datomic.com/faq.html): When is Datomic not a good fit? Datomic is not a good fit if you need unlimited write scalability, or have data with a high update churn rate (e.g. counters). And, at present, Datomic does not have support for BLOBs.