Hi folks ! I’m a CS student in the 6th semester at...

# feed

[alexandrepiveteau]

Hi folks ! I’m a CS student in the 6th semester at HEIG-VD.

I’ve been working on my bachelor thesis for the last weeks, and thought it might be interesting to share, since it’s a Kotlin multiplatform (JVM + JS) project. I’ve made an online collaborative Markdown editor, using Kotlin/JS for the frontend and with a replication server in Kotlin/JVM. The editor uses some CRDTs to sync text across the clients. Messages are Protobuf-serialized with kotlinx.serialization, and sent / received through websockets with Ktor.

An interesting challenge was to design a nice abstraction layer around CRDTs with first-class support for coroutines and flows (in order, for instance, to collect editor state changes through a StateFlow).

My thesis is ending soon, but I’d love to get some feedback on my work (especially if you’re interested in CRDTs and distributed systems) and my usage of KMM, so I can integrate it in the project !

The project is available on Github : https://github.com/markdown-party/mono
Feedback (via email or Slack) : [e-mail]

[nfrankel]

hop svizz 🇨🇭
j’ai enseigné à la HEG 😄

[nfrankel]

quand mes élèves alignaient trois lignes de java en fin de 3ème année, j’étais content
(j’exagère, mais à peine)
du coup, bravo pour les CRDTs 👏
on vous enseigne kotlin à l’école ou vous vous y êtes mis par vous même ?

[alexandrepiveteau]

Merci haha 🇨🇭 Kotlin est abordé dans le cadre des cours de systèmes mobiles, mais ça reste assez superficiel et vraiment orienté Android. À titre personnel, ça fait déjà quelques années que je m’y suis mis

[nfrankel]

chapeau !

[nfrankel]

ils sont tous comme vous à vaud ?

[nfrankel]

si oui, je me suis trompé de canton 😅

[rocketraman]

Very cool. I implemented a similar project a few years ago [1] with JavaScript, but its great to see a clean Kotlin-based implementation. If I ever picked this up again, I'd definitely look into re-using / building on your work.

[1] https://github.com/ritzyed/ritzy.