TwistingTwists
Journal : Designing Elixir systems with OTP
This is my Journal for readings on Designing Elixir Systems with OTP.
Will post chapter 01 tomorrow! Stay tuned!
Most Liked
AstonJ
Nice one TT! Another book I am interested in reading at some point! 
3
TwistingTwists
Chapter 01
Concepts / RE-Thinks:
DFTwBLWB : Do Fun things with Big Loud Worker Bees - acronym to think about layering application.
DFT = for building blocks of project
BLWB = for letting components work together.
Why layers?
- Testing each component with SIMILAR functions together (because they are grouped together! )
- Healing - supervisors
- the concept is (called
lifecycle) as simple as turn-off the TV and restart tofixit! - So, shut down CLEANLY (note,emphasis)!
- the concept is (called
Managing state :
- recursion and message passing to manage state.
- This is new! = message passing is usually an advanced concept and not ‘generally’ used to manage state, unless - Elixir or MVC model.
3
TwistingTwists
Chapter 02 : Know Your Elixir Datatypes
Types and pro-cons
| DataType | Properties | Pro | Cons |
|---|---|---|---|
| Atoms | are integer + constant + NOT garbage collected | use = name concepts + constant tables type lookup | NOT convert user-input to atom |
| Arrays = NOT in Elixir! | - | random access is cheap + traversing O(n) + | |
| Lists | NOT arrays! + singly linked-lists + | pattern matching on head is O(1) | Appending at END of lists or LARGE lists |
| Maps | random access O(log n) => useful for heavily edited data | use MapSet when only Keys (uniqueness) | |
| Strings | are binaries => efficiently stored + copy is a FULL copy (unlike lists) | DO NOT LET processes hold references to long string => may cause memory leaks + NOT use long strings for storing info + DONT concatenate | |
| Tuples | fixed length data structure | use for tagging data + read chunks of data like csv | slow append => don’t edit (if need to, use Maps) |
| Functions | send function to data, NOT data to function | ||
| PATTERN matching | allows multiple dimension inheritance (sort of) => better than inheritance!! |
3
Popular Community topics
My first contact with Erlang was about 2 years ago when I used RabbitMQ, which is written in Erlang, for my job. This made me curious and...
New
So I have enough money to last a year. Realistically I’m still going to have to work part time painting. I’m so done with it though!
I h...
New
Crystal recently reached version 1. I had been following it for awhile but never got to really learn it. Most languages I picked up out o...
New
The very first time I’ve seen a line of Elixir I was in awe. Coming from Ruby the syntax was familiar.
But I wanted to know what was thi...
New
TL;DR I am reading “Domain Modeling Made Functional” and discussing and keeping a journal of what I learned from it, any co-readers welco...
New
I have read first chapter. Will add my notes / code tries / self exploration as I go along!
Thank you @AstonJ for encouraging to start ...
New
I would love to begin a book club with Mike Amundsen’s (@mamund) book
Design and Build Great Web APIs.
It seems that building new syste...
New
This is my Journal for readings on Designing Elixir Systems with OTP.
Will post chapter 01 tomorrow! Stay tuned!
New
Agile Web Development with Rails 6 Chapter 11. Task F
Currently reading and working through AWDR6 by Sam Ruby, David Bryant Copeland, a...
New
https://fs.blog/mental-models/
I’ve been reading Farnham Street for a while, and this topic is the recommended starting point for new re...
New
Other popular topics
Hello Devtalk World!
Please let us know a little about who you are and where you’re from :nerd_face:
New
Write Elixir tests that you can be proud of. Dive into Elixir’s test philosophy and gain mastery over the terminology and concepts that u...
New
Which, if any, games do you play? On what platform?
I just bought (and completed) Minecraft Dungeons for my Nintendo Switch. Other than ...
New
I’m thinking of buying a monitor that I can rotate to use as a vertical monitor?
Also, I want to know if someone is using it for program...
New
Build highly interactive applications without ever leaving Elixir, the way the experts do. Let LiveView take care of performance, scalabi...
New
I have always used antique keyboards like Cherry MX 1800 or Cherry MX 8100 and almost always have modified the switches in some way, like...
New
Build modern server-driven web applications using htmx. Whatever programming language you use, you’ll write less (and cleaner) code.
...
New
Explore the power of Ash Framework by modeling and building the domain for a real-world web application.
Rebecca Le @sevenseacat and ...
New
Node.js v22.14.0 has been released.
Link: Release 2025-02-11, Version 22.14.0 'Jod' (LTS), @aduh95 · nodejs/node · GitHub
New
Fight complexity and reclaim the original spirit of agility by learning to simplify how you develop software. The result: a more humane a...
New
Sponsor Spotlight
Real-time error tracking, performance insights, and observability for devs.
Latest in Designing Elixir Systems with OTP
Categories:
Sub Categories:
Popular Portals
- /elixir
- /rust
- /wasm
- /ruby
- /erlang
- /phoenix
- /keyboards
- /python
- /js
- /rails
- /security
- /go
- /swift
- /vim
- /java
- /clojure
- /emacs
- /haskell
- /typescript
- /svelte
- /onivim
- /kotlin
- /c-plus-plus
- /crystal
- /tailwind
- /react
- /gleam
- /ocaml
- /elm
- /flutter
- /vscode
- /html
- /ash
- /deepseek
- /opensuse
- /zig
- /centos
- /php
- /scala
- /react-native
- /lisp
- /sublime-text
- /textmate
- /nixos
- /debian
- /agda
- /deno
- /django
- /kubuntu
- /arch-linux
- /nodejs
- /spring
- /ubuntu
- /revery
- /manjaro
- /julia
- /diversity
- /lua
- /quarkus
- /laravel
Devtalk Sponsors
Practical resources that improve the lives of professional developers.
We build trusted fault-tolerant systems that scale to billions of users.
Real-time error tracking, performance insights, and observability for devs.
Supporting innovation across the BEAM ecosystem.
We build reliable cloud platforms for business-critical systems.
Develop your skills with books, videos, and courses.
Catch errors, track performance, monitor hosts and more.
Enabling companies to succeed by building software people love.
Courses that move you from confusion to "Aha, now I get it!"
Publishing Linux Magazine, ADMIN, and MakerSpace for 25+ years.