crdt-map-synchronizer

A synchronizer for a CRDT Map.

Table of Contents

• Install
• Usage
• API
  • createCRDTMapSynchronizer
• Building
• Testing
• Improvements

Install

npm i @organicdesign/crdt-map-synchronizer

Usage

import { createCRDTMapSynchronizer } from "@organicdesign/crdt-map-synchronizer";

createCRDTMap({
	synchronizers: [createCRDTMapSynchronizer(options)]
});

API

createCRDTMapSynchronizer

createCRDTMapSynchronizer([options])(components);

• options <Object> An optional object with the following properties:
  • protocol <string> Specifies the name of the protocol to sync crdts over. Default: "/stateless-crdt-map/0.1.0".
• components <Object> An object with the following protperties:
  • keys <() => Iterable<string>> A function that gets the list of keys.
  • get <(key: string) => CRDT> A function that gets a CRDT by key.
  • getId <() => Uint8Array> A function that returns the CRDT ID.
• Returns: <CRDTMapSynchronizer> The CRDT map synchronizer instance.

Creates a CRDT map synchronizer.

Building

To build the project files run:

npm run build:protos && npm run build

Testing

To run the tests:

npm run test

To lint files:

npm run lint

Improvements

There are a number of things that could improve this synchronizer to increase it's efficiency:

• [ ] Make it stateful - holding a little bit of state reduces the size of the data needed to be sent through the channel.
• [ ] Parallel - running the requests in parallel instead of series would reduce round trips needed to synchronize it.
• [ ] Keep track of accepted crdt/protocol matches - if we know a peer has accepted a crdt/protocol pair then it is likely that it would accept it again.

Other things that need to be done:

• [ ] Testing.
• [ ] Better error handling.