yjs
state
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yjs
- Show HN: Collaborate on your YC Application with CRDT-powered forms
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Making CRDTs 98% More Efficient
One idea is just to use fewer random bits in peerIDs. Yjs (https://docs.yjs.dev/) gets away with just 32 random bits. If you compromise and use 64 random bits, then even a very popular doc with 1 million lifetime peerIDs will have a < 10^-7 lifetime probability of collision.
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An Interactive Intro to CRDTs
I've seen it come up often in collaborative text editors.
Also see: https://github.com/yjs/yjs
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JSON Schema Store
You are absolutely right that XML is better for document structures.
My current theory is that Yjs [0] is the new JSON+XML. It gives you both JSON and XML types in one nested structure, all with conflict free merging via incremental updates.
Also, you note the issue with XML and overlapping inline markup. Yjs has an answer for that with its text type, you can apply attributes (for styling or anything else) via arbatary ranges. They can overlap.
Obviously I'm being a little hypabolic suggesting it will replace JSON, the beauty of JSON is is simplicity, but for many systems building on Yjs or similar CRDT based serialisation systems is the future.
https://github.com/yjs/yjs/
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Launch HN: Tiptap (YC S23) – Toolkit for developing collaborative editors
Note: https://github.com/yjs/yjs for collaborative "document edition, and user cursors"; has WebRTC, web socket, matrix.org backend
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Wormholers, what can CCP and wormholers do to improve J-Space?
CCP needs to revamp proto anyway, due to recent exploits... practically, nothing really prevents 'em from using some sort of CRDT's to make the state of the sig view eventually consistent (yjs lib, if we're speaking frontendian).
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How to use Yjs with Ruby on Rails?
Yjs framework: Because it is a CRDT implementation which provides collaborative editing and offline-first capability.
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🐑🐑🐑 EweserDB, the user-owned database 🐑🐑🐑
No problem. The database CRUD features are just helpers as an abstraction on top of yjs: https://docs.yjs.dev/. Eweser adds schemas in the form of typescript types to make using it simpler, more structured, and interoperability easier.
- Ask HN: What is new in Algorithms / Data Structures these days?
- How does Google docs send the changes done by other users in real-time?
state
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Show HN: SyncedStore CRDT – build multiplayer collaborative apps for React / Vue
Hi! Great questions :)
First of all, SyncedStore does not implement any CRDT algorithms. Credits for this go to Yjs [1] (and its author Kevin), which it uses as underlying CRDT.
Yjs and Automerge are (afaik) the two most commonly used CRDT implementations. Both have their pros and cons, but Yjs has focused a lot on performance [2].
Automerge has a bit friendlier "Immer style" [3] API. I'm not too familiar with @localfirst/state, but it seems to add a Redux style API on top of Automerge.
My approach with SyncedStore was really to provide an API on top of Yjs that's as simple as possible to use in React / Vue / Svelte or plain JS app. I.e.: only use a single React Hook to observe changes, and use regular Javascript assigments to update values. The API is inspired mostly by Reactive Programming libraries such as MobX [4] (from the same author as Immer).
Hope you're still following along :) Maybe it helps to compare the TODO-MVC applications, as both SyncedStore (https://github.com/YousefED/SyncedStore/tree/main/examples) and @localfirst/state (https://github.com/local-first-web/state/tree/main/examples/...) have implemented these as examples!
[1]: https://github.com/yjs/yjs
What are some alternatives?
automerge - A JSON-like data structure (a CRDT) that can be modified concurrently by different users, and merged again automatically.
liveblocks - Liveblocks is a platform to ship collaborative features like comments, notifications, text editors in minutes instead of months.
SyncedStore - SyncedStore CRDT is an easy-to-use library for building live, collaborative applications that sync automatically.
automerge-rs - Rust implementation of automerge [Moved to: https://github.com/automerge/automerge]
MobX - Simple, scalable state management.
crdt-woot - Implementation of collaborative editing algorithm CRDT WOOT.
swarmbase - swarmbase is a peer-to-peer dweb database with access control
milkdown - 🍼 Plugin driven WYSIWYG markdown editor framework.
crdt-benchmarks - A collection of CRDT benchmarks