rnewman
commented
6 years ago Worth mentioning why this is useful: if you wanted to build a list of entities that had changed since you last did something — e.g., since you last implemented some kind of sync — this is how you'd do it. You can't just query the datoms table for entities with a tx greater than some value, because retractions and excisions will be missed.
Datomic supports a neat API for examining the log:
https://docs.datomic.com/on-prem/log.html
We're not far from having this in Tolstoy, so I think this is quite achievable.