I just released erlmacs. It’s a simple script to update your .emacs file for Erlang development
1 Like
Working on Nerlnet, an open-source library for research and development of distributed machine learning models. Nerlnet communication layer is based on Cowboy-HTTP server and Erlang. The NN library is OpenNN and it is controlled by a statem through NIF implementation.
You are more than welcome to visit our repository, give it a star, and try it yourself.
leondavi/NErlNet: Nerlnet is a distributed machine learning platform for experiments and IoT deployment. (github.com)
3 Likes
I’m not much of an Erlangist, but I did have to dig into :erl_tar yesterday. I needed to modify an Elixir release tar.gz file, and it only took me about an hour to figure out how to make the changes I needed 
. Turns out you can’t modify an archive with :erl_tar, so I had to extract the file, make a new file, and add the existing and changed files to a new tar.gz file.
It was a good experience overall, since it gave me the opportunity to familiarize myself with the Erlang documentation style (which is looking great since they switched to ExDoc!).
3 Likes
First (re)install of Erlang in about 20 years - NB it’s a different machine. Back then I only got to play around a bit, and haven’t gotten much further this time, but I’m hoping to eventually get some production service up and running.
4 Likes
I have started reading book, elixir like meta programming
1 Like
During fall 2024 I have used Erlang for back end server side for an analysis app targeted a multi tenant setup. In Erlang I have implemented:
- The server end of web sockets in Cowboy
- Data store in Mnesia
- Management worker for administration of users etc for each tenant
- Analysis worker where each session has a 100+ nodes rule engine (about 10 different type of nodes), each node in a separate process
- A parser for the rule engine so that I can update the network and make per tenant rules if customers are really really stubborn.
I have modeled the rule engine using Archi (archimatetool.com) that stores data in XML which I transfer to JSON and parse in Erlang. The result is stored as rule engine objects in Mensia. This is I think quite cool and I would love to tell you all more about it some time.
The client is written in C++/Qt and compiled into webasm. I am not skilled in JavaScript and most alternatives compiled into webasm anyway and I am skilled in C++/Qt so I gave it a go.
Current production (demo production) is on a VPS but I am diving deep into Engineering Elixir Applications and intend to run the environment as a docker cluster some how (Swarm or Kubernetes, have not yet decided).
We are planning for the first trial customer going live in test mode in January 2025.
Reflections
It has been a heck of a journey. Last time i developed in Erlang was during the Elvira project 95-98 or so. During all those years I have been certain that Erlang has a very good fit for the modern web based world and after the project I still believe in that. There has been bumps, mostly related to lack of up to date experience (and perhaps changes).
I also think that the reference documentation are, in general, very difficult for developers meeting a function of module the first time. Once you grasp the concept documentation are good. Luckily I have an OŔelly Learning account where most books about Erlang and Elixir are available and I have made good use of the money there 
Then there are examples from a handful bloggers which, without, I would never be able to reach goal. Same goes for this forum - without it I would have been forced to revert to develop the server in C++.
I have a threaded C++ sever for my solar panel installation and I am painfully aware of the frequent crashes and restarts needed. Once I have some spare time that system will be refactored into Erlang or Elixir with much needed functionality one can achieve with a database like Mnesia.
God Fortsättning as we say in Sweden and a Happy New Year Beamers!
3 Likes
Please do 
2 Likes