I like that it’s bitemporal (datomic isn’t). There’s a project that adds bitemporal queries/inserts/etc to postgres, but it’s kind of clunky to use and no ORM that I know of supports it.

I’d be interested in reading a practical comparison between xtdb and other database systems (bugs; ease of use; performance under real-world load).

Related Lobsters threads:

• https://lobste.rs/s/sxlefb/datomic_is_free_as_beer
• https://lobste.rs/s/hlaxtt/announcing_xtdb_2_x_early_access
• https://lobste.rs/s/qu379e/why_did_prolog_lose_steam_2010 ¹
• https://lobste.rs/s/o2qvt1/project_mentat

¹ not as closely related, but I figure it could be useful for someone in the absence of a prolog tag

Its fun to see EDN get used. https://docs.xtdb.com/tutorials/essential-edn/