Welcome to ElixirForum Moeblack!
code-shoily
wycliffogembo87
Just shipped sTELgano — a zero-knowledge messaging app on Phoenix 1.8 + LiveView. The premise: two people share a fake phone number saved in each other’s contacts plus a PIN, and that’s the whole credential. The server only ever sees SHA-256 hashes and AES-256-GCM ciphertext — all crypto runs in the browser via the Web Crypto API.
AGPL-3.0. Repo at GitHub - sTELgano/sTELgano: Private messaging that hides in your contacts. · GitHub, live at https://stelgano.com. Opened a separate thread over in Chat / Discussions [LINK] for anyone who wants to dig into the design — unauthenticated channel socket, N=1 message invariant, LiveView as a state machine with crypto isolated to JS hooks.
webofbits
I’ve been building mars_colony_otp, a story-driven OTP tutorial in Elixir.
The idea is to teach OTP through one cumulative system.
It starts with a raw process loop using spawn_link / send / receive, then grows step by step through:
- pure state transitions
- GenServer
- Registry
- supervision trees
- dynamic workers
- tasks
- alerts
- queue ownership
- telemetry
- GenStage
- Broadway
- persistence
- distributed outposts (final chapter)
The goal: abstractions show up when the system actually needs them.
So:
- a supervisor appears when failures must stay local
- a queue appears when work starts piling up
- Broadway shows up when the data path starts looking production-grade
Each chapter is its own standalone Mix project, but from lesson 1 onward the tutorial is cumulative.
I also kept READMEs and code comments friendly for people new to OTP, and every chapter includes :observer for runtime exploration.
Repo:
11
webofbits
From the same series, I created one for learning Jido GitHub - ccarvalho-eng/jido_class: Story-driven Jido tutorial that builds an autonomous game studio one agent at a time. · GitHub
webofbits
I am preparing one for Ash.
Curious to know what do you guys think of this kind of tutorial. For me, It’s less boring and intuitive when you can progress incrementally using geek analogy.
webofbits
I’ll be wrapping these series into an organisation: GitHub - Event-Horizon-Stories/mars_colony_otp: Learn OTP by keeping a fragile Mars colony running as things inevitably break · GitHub
webofbits
Ok. This is what I have so far:
galactic_trade_authority
An Ash tutorial series set inside the Galactic Trade Authority, where official truth is whatever passes validation.
horizon_engine
An event sourcing tutorial told through The Origin Inquiry, a reconstruction of how the universe began from fragmentary logs.
mars_colony_otp
Learn OTP by keeping a fragile Mars colony running as things inevitably break
webofbits
And this
signal_network
An Elixir tutorial series about PubSub, signals, coordination, and life on the wire.
Will add more as I build
webofbits