this post was submitted on 01 Jan 2026
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Programming
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Conflict free replicated data types, I don’t know if I’d call them obscure but they’re definitely cool and less often used. They’re for shared state across computers, like in collaborative apps
They were pretty obscure until recently! I would say most people still don’t know about them.
From just the name my mind instantly thought of the conflict as "conflict diamonds", and I began to wonder what constitutes a conflict free boolean or integer.
If anyone wants to take a crack at writing up why primitives are unfortunate, and we should move on to new "conflict free data types"™ I will cheer you on!
Also, very interesting read about actual conflict free replicated days types. Cheers!
This sounds like document collaboration software like Google sheets where multiple people can edit a document at the same time
Yes exactly, collaborative editing is probably the number one use case people actually use them for. I doubt Google docs actually uses a real CRDT behind the scenes but they do have some big brains over there in the chocolate factory