Erlang: The coding language that finance forgot

1. aws-lambda-elixir-runtime

   1 1 127 0.0 Elixir

   Example implementation of a custom runtime for running Elixir on AWS Lambda.

   

   Well I remember this announcement[0] and there was this [1] but I'm not sure that went anywhere.

   [0] https://aws.amazon.com/fr/blogs/aws/new-for-aws-lambda-use-a...

   [1] https://github.com/aws-samples/aws-lambda-elixir-runtime

2. InfluxDB

   www.influxdata.com featured

   InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.

   

3. CouchDB

   2 41 6,598 9.6 Erlang

   Seamless multi-primary syncing database with an intuitive HTTP/JSON API, designed for reliability

   

   I just turns out you can't always do that in a real codebase. For example see here:

     https://github.com/apache/couchdb/blob/23efd8e5b1aa96ef01640fec03a5fedc945ba8b9/src/couch_mrview/src/couch_mrview_http.erl#L228

4. erllambda

   3 1 195 2.5 Erlang

   AWS Lambda in Erlang

   

   I've run plenty of things in AWS Lamba using Erlang FWIW.

   https://github.com/alertlogic/erllambda

   It is interesting in as much as the lambda functions stay hot for a period of time.

5. april

   4 55 627 8.8 Common Lisp

   The APL programming language (a subset thereof) compiling to Common Lisp.

   

   The one big use case was RabbitMQ in a messaging app, not HFT. I doubt Elixir even with Nx can compete with low-level HFT code. Python DL/ML code libraries are just wrappers around C too. Maybe if BeamAsm and Nx are used Elixir could be used for more numerical or not just distributed applications.

   I've programmed in Python and Julia, and when I worked at an engineering (mechanical, entertainment engineering) company, Julia was great for its similarity to Matlab. I am a self-taught engineer, so I did not get pulled into Matlab in college.

   Personally, I took to Erlang, so I could write plugins for Wings3D back in the early 2000s, but I never stuck with Erlang, or Wings3D (Blender3D was my choice and I even contributed to have it go opensource way back when). I like Erlang's syntax better for some reason, although Elixir's is beautiful too. I was not a Ruby programmer, and I had delved into Haskell and Prolog, so I think Erlang made more sense to me. I think Elixir has a lot more momentum behind it than Erlang, but at the root it's Erlang, so I think I'll stick with Erlang for BEAM apps. My favorite language is April[1] (APL in Lisp), and given my love of J, would be a better fit for any finance apps I might write. I am trying to convert some of the Lisp code in this book, "Professional Automated Trading: Theory and Practice" to April.

   Maybe I'll write some equivalent Elixir code to compare.

   [1] https://github.com/phantomics/april

6. otp

   5 34 11,767 10.0 Erlang

   Erlang/OTP

   

7. beam_languages

   6 7 762 0.0

   Languages, and about languages, on the BEAM

   

   Have I got a link for you!

   https://github.com/llaisdy/beam_languages

   See you down the rabbit hole!

8. eqwalizer

   7 11 531 9.3 Scala

   A type-checker for Erlang

   

9. Stream

   getstream.io featured

   Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.

   

10. secdb

    8 1 39 10.0 C++

    Timeseries market data database

    

    A comment to the posted-article, from "Frellus", who identifies as ex-Goldman, suggests RabbitMQ might not have been used so extensively:

    Ex-Goldman person here. To the best of my knowledge, RabbitMQ was used in spots but not where reliability was critical. Instead the main message brokers were IBM MQ and TIBCO. RabbitMQ would certainly lose messages in the event of a crash, and I'm not sure it would have been used for the main message bus given the rate of events. Additionally, Erlang was used for SecDB queries quite heavily. This was the bread-and-butter of the firm (https://github.com/saleyn/secdb)

11. purerl

    9 7 343 3.9 Haskell

    Erlang backend for the PureScript compiler

    

    I will put in a good word for PureScript for the beam with `purerl`. It's my go-to for writing BEAM code nowadays. Notably PureScript tooling including LSP, package management, etc., just works, so you are able to just get to work in internalizing the way OTP and other Erlangy things are expressed in a statically typed, pure language.

    https://github.com/purerl/purerl & https://purerl-cookbook.readthedocs.io/ for more information. Join the PureScript discord and the #purerl channel if you want help.

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