datomic 2026-09-17

Is there a book dedicated to Datomic out there? I see some Clojure books with Datomic chapters, and some blog post series dedicated to Datomic, but so far I haven't come across any Datomic-specific printed works. Mebbe someone in the channel has some dusty half-written drafts stashed in a markdown doc somewhere?

I wish! If anyone wants to write it I'd collab and help review and make Dev help (wouldn't have to twist their arms too hard)

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I fantasize about such a project often 🙂 I'd love to do it in an incremental style. Write a chapter, put it up online somewhere, get the community to weigh in for comments and edits, proceed ... This guy did a similar process for his book, and it was cool to watch it take shape over time: https://abuseofnotation.github.io/category-theory-illustrated/

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There is also a big win in identifying where the reference documentation fails to satisfy an end user’s curiosity. Posts in the past like unofficial guide to datomic internals are excellent resources that many folks use. I feel like a list of those things that are a gap would form the basis of a book beyond the introductory chapters

And some of these things we have complementary blog posts about but it needs a narrative and more info for users… I.e “partitions, when and how should I use them”

A book could knock this stuff out of the park

Yeah, exactly. The info is out there, but it can be hard to bring it together to build a cohesive picture, especially for a newbie.

You'll find it if you look, but you have to look, and you kind of have to know what you're looking for in the first place, or discover it along the way. Maybe later than would have been ideal.

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I personally also would love to have some historical “why” for certain features… that is largely opinion and background information but I do think it's interesting to understand what motivated certain features and why they came along when they did… sort of a “tell all”

we recommend our colleagues, who are new to datomic, to watch both 2014 and 2016, ~6 hour stuart halloway presentations: https://docs.datomic.com/resources/day-of-datomic.html