loro-dev/loro
Fork: 78 Star: 4215 (更新于 2024-12-04 07:22:08)
license: MIT
Language: Rust .
Make your JSON data collaborative and version-controlled with CRDTs
最后发布版本: loro-crdt@0.16.12 ( 2024-09-07 19:46:26)
Loro
Make your JSON data collaborative and version-controlled 🦜
Documentation | Getting Started | Rust Doc
https://github.com/loro-dev/loro/assets/18425020/fe246c47-a120-44b3-91d4-1e7232a5b4ac
✨ Loro 1.0 is out! Read the announcement.
Loro is a CRDTs(Conflict-free Replicated Data Types) library that makes building local-first and collaborative apps easier. You can now use it in Rust, JS (via WASM), and Swift.
Features
Features Provided by CRDTs
- P2P Synchronization
- Automatic Merging
- Local Availability
- Scalability
- Delta Updates
Supported CRDT Algorithms
- 📝 Text Editing with Fugue
- 📙 Peritext-like Rich Text CRDT
- 🌲 Moveable Tree
- 🚗 Moveable List
- 🗺️ Last-Write-Wins Map
Advanced Features in Loro
- 🚀 Fast Document Loading
- ⏱️ Fast Time Travel Through History
- 🏛️ Version Control with Real-Time Collaboration
- 📦 Shallow Snapshot that Works like Git Shallow Clone
https://github.com/user-attachments/assets/68e0017a-4987-4f71-b2cf-4ed28a210987
In this example, we demonstrate importing an entire Loro codebase into a Loro-powered version controller, preserving the complete Git DAG history while enabling fast version switching.
Example
import { expect, test } from 'vitest';
import { LoroDoc, LoroList } from 'loro-crdt';
test('sync example', () => {
// Sync two docs with two rounds of exchanges
// Initialize document A
const docA = new LoroDoc();
const listA: LoroList = docA.getList('list');
listA.insert(0, 'A');
listA.insert(1, 'B');
listA.insert(2, 'C');
// Export all updates from docA
const bytes: Uint8Array = docA.export({ mode: 'update' });
// Simulate sending `bytes` across the network to another peer, B
const docB = new LoroDoc();
// Peer B imports the updates from A
docB.import(bytes);
// B's state matches A's state
expect(docB.toJSON()).toStrictEqual({
list: ['A', 'B', 'C'],
});
// Get the current version of docB
const version = docB.oplogVersion();
// Simulate editing at B: delete item 'B'
const listB: LoroList = docB.getList('list');
listB.delete(1, 1);
// Export the updates from B since the last sync point
const bytesB: Uint8Array = docB.export({ mode: 'update', from: version });
// Simulate sending `bytesB` back across the network to A
// A imports the updates from B
docA.import(bytesB);
// A has the same state as B
expect(docA.toJSON()).toStrictEqual({
list: ['A', 'C'],
});
});
Credits
Loro draws inspiration from the innovative work of the following projects and individuals:
- Ink & Switch: The principles of Local-first Software have greatly influenced this project. The Peritext project has also shaped our approach to rich text CRDTs.
- Diamond-types: The Event Graph Walker (Eg-walker) algorithm from @josephg has been adapted to reduce the computation and space usage of CRDTs.
- Automerge: Their use of columnar encoding for CRDTs has informed our strategies for efficient data encoding.
- Yjs: We have incorporated a similar algorithm for effectively merging collaborative editing operations, thanks to their pioneering work.
- Matthew Weidner: His work on the Fugue algorithm has been invaluable, enhancing our text editing capabilities.
- Martin Kleppmann: His work on CRDTs has significantly influenced our comprehension of the field.
最近版本更新:(数据更新于 2024-09-21 22:45:26)
2024-09-07 19:46:26 loro-crdt@0.16.12
2024-09-07 19:46:24 loro-wasm@0.16.12
2024-09-05 14:33:11 loro-crdt@0.16.11
2024-09-05 14:33:08 loro-wasm@0.16.11
2024-08-28 00:12:35 loro-crdt@0.16.10
2024-08-28 00:12:32 loro-wasm@0.16.10
2024-08-27 21:36:29 loro-crdt@0.16.9
2024-08-27 21:36:27 loro-wasm@0.16.9
2024-08-27 21:10:18 loro-crdt@0.16.8
2024-08-27 21:10:16 loro-wasm@0.16.8
主题(topics):
collaborative-editing, crdt, local-first, offline-first, p2p, privacy-first, rich-text
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