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Yorkie

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Build Status Go Report Card CodeCov Godoc

Yorkie is an open source document store for building collaborative editing applications. Yorkie uses JSON-like documents(CRDT) with optional types.

Yorkie consists of three main components: Client, Document and Server.

 Client "A" (Go)                 Server                       MemDB or MongoDB
┌───────────────────┐           ┌────────────────────────┐   ┌───────────┐
│  Document "D-1"   │◄─Changes─►│  Project "P-1"         │   │ Changes   │
│  { a: 1, b: {} }  │           │ ┌───────────────────┐  │◄─►│ Snapshots │
└───────────────────┘           │ │  Document "D-1"   │  │   └───────────┘
 Client "B" (JS)                │ │  { a: 2, b: {} }  │  │
┌───────────────────┐           │ │                   │  │
│  Document "D-1"   │◄─Changes─►│ │  Document "D-2"   │  │
│  { a: 2, b: {} }  │           │ │  { a: 3, b: {} }  │  │
└───────────────────┘           │ └───────────────────┘  │
 Admin (CLI, Web)               │                        │
┌────────────────────┐          └────────────────────────┘
│  Query "Q-1"       │              ▲
│  P-1.find({a:2})   ├───DB Query───┘
└────────────────────┘
  • Clients can have a replica of the document representing an application model locally on several devices.
  • Each client can independently update the document on their local device, even while offline.
  • When a network connection is available, the client figures out which changes need to be synced from one device to another, and brings them into the same state.
  • If the document was changed concurrently on different devices, Yorkie automatically syncs the changes, so that every replica ends up in the same state with resolving conflict.

Server and SDKs

Quick Start

https://yorkie.dev/docs/quick-start

Documentation

Full, comprehensive documentation is viewable on the Yorkie website:

https://yorkie.dev/docs

Developing Yorkie

For building Yorkie, You'll first need Go installed (version 1.18+ is required). Make sure you have Go properly installed, including setting up your GOPATH. Then download a pre-built binary from release page and install the protobuf compiler (version 3.4.0+ is required).

Next, clone this repository into some local directory and then just type make build. In a few moments, you'll have a working yorkie executable:

$ make build
...
$ bin/yorkie # For Windows, .\bin\yorkie.exe

We need to install Golang packages to build Yorkie locally. You can run make tools to install the required packages.

Tests can be run by typing make test.

NOTE: make test includes integration tests that require local applications such as MongoDB, etcd. To start them, type docker-compose -f docker/docker-compose.yml up --build -d.

If you make any changes to the code, run make fmt in order to automatically format the code according to Go standards.

Contributing

See CONTRIBUTING for details on submitting patches and the contribution workflow.

Contributors

Thanks go to these incredible people:

contributors

Sponsors

Is your company using Yorkie? Ask your boss to support us. It will help us dedicate more time to maintain this project and to make it even better for all our users. Also, your company logo will show up on here and on our website: -) [Become a sponsor]

Backers

Please be our Backers.