shelf

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Observed mentions: 2021-10-01 23:38:25 UTC to 2022-05-17 13:11:57 UTC.

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Period	Start (UTC)	End (exclusive, UTC)	Mentions	Comments
Oct 2021	2021-10-01 00:00:00 UTC	2021-11-01 00:00:00 UTC	1	1
Nov 2021	2021-11-01 00:00:00 UTC	2021-12-01 00:00:00 UTC	0	0
Dec 2021	2021-12-01 00:00:00 UTC	2022-01-01 00:00:00 UTC	0	0
Jan 2022	2022-01-01 00:00:00 UTC	2022-02-01 00:00:00 UTC	0	0
Feb 2022	2022-02-01 00:00:00 UTC	2022-03-01 00:00:00 UTC	0	0
Mar 2022	2022-03-01 00:00:00 UTC	2022-04-01 00:00:00 UTC	0	0
Apr 2022	2022-04-01 00:00:00 UTC	2022-05-01 00:00:00 UTC	1	1
May 2022	2022-05-01 00:00:00 UTC	2022-06-01 00:00:00 UTC	1	1

What Hacker News says

3 sources

jitl·May 17, 2022

I think you could encode a “shelf” last-write-wins CRDT into your HTML using data attributes without exploding your file size. You would need to add a data-version attribute, and if you want to support hand-editing or editing by programs that don’t understand the CRDT, a CRC32 or other parity as data-parity so your loader can tell when a user might have edited a row without updating data-version. Shelf is really simple - the JS implementation is tiny (https://github.com/dglittle/shelf) and a walkthrough of the algorithm here is a quick read: https://bartoszsypytkowski.com/shelf-crdt/amp/ It wouldn’t handle character level sync - but would let you merge documents at a rows/items/blocks level.

In Show HN: Bike – macOS Native Outliner

josephg·Apr 16, 2022

Hi everyone! Author here. I'm happy to answer questions. I wrote this a couple years ago. Since then I've been working on my own CRDT called Diamond Types[1], which uses a lot of these ideas to be bonkers fast. I've built several OT based collaborative editing systems, and diamond types is much faster than any of them - though rust and wasm might be the real MVPs here. I wrote a follow-up to this article last year when I got that working, talking about how some of the optimizations work. That article is here[2]. A fair bit has changed since I wrote that article. Yjs has started a rewrite in rust (called yrs[3]). And Automerge has apparently dramatically improved performance based on some of the ideas I talk about in this article. Oh, and diamond types has been rewritten from the ground up. Its now about 5x faster than it was last year, by

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completely changing the internal structure. But thats a story for another day. Unfortunately I still only support collaborative text editing. Adding full JSON support comes soon, after I document some more of the tricks I'm doing. Its really fun work! Why do I only support collaborative text editing? Because I care about performance, and text CRDT performance is hard because you have so many individual changes - generally one for each keystroke! Making text editing (and list CRDTs in general) fast opens up a lot of other design approaches for a general purpose CRDT. But we've still got to do the work itself. To make that happen, my plan is to add full JSON editing support to diamond types using shelf[4]. Shelf is a super simple CRDT which fits in 100 lines of javascript. The next piece of work is marrying them together. [1] https://github.com/josephg/diamond-types/ [2] https://josephg.com/blog/crdts-go-brrr/ [3] https://github.com/y-crdt/y-crdt/tree/main/yrs [4] https://github.com/dglittle/shelf

In I was wrong – CRDTs are the future (2020)

josephg·Oct 1, 2021

The CRDT I was referencing was Shelf by Greg Little. He's given a few talks about it at the braid meetups. When he first showed it off, Kevin Jahns (the Yjs author) was also there and was as impressed as I was: https://braid.org/meeting-8 (the shelf part with Greg starts at about 43 minutes in to the recording.) The code is all here. Its tiny: https://github.com/dglittle/shelf

In Downsides of Offline First