On this week’s Elixir live stream archive, Eric continues with rate limiting, adding it to more places and setting up a new global rate limit.

https://www.youtube.com/watch?v=tzoGkrQLuBQ&feature=youtu.be&t=131

In this episode of ElixirMix, we talk with Arkadiusz Gil about the Erlang Ecosystem Foundation, how Telemetry got started, the goals, how it’s integrated into Ecto and Phoenix, the cool way it works internally, how to leverage it for application monitoring and much more!

Podcast Episode

The Call for Talks for the “Erlang, Elixir and friends” devroom at FOSDEM 2020 is now live:

https://beam-fosdem.org

Submit your proposal and come enjoy a weekend with the BEAM community, the free software community and lots of good beers in Brussels!

I had reason to dive into dynamic repos for a project. Multi-tenancy was trickier than I thought it would be but is also very much doable with the APIs Ecto provides for it. This post covers the basics with more to come.

I wrote a small introduction to Stream.unfold/2: https://dev.to/lasseebert/stream-unfold-2-3a1h

Committee is a supercharged git hooks manager in pure Elixir

It allows you to manage your git hooks like pre_commit by writing just Elixir

Give it a whirl and let me know what you think :)

https://github.com/edisonywh/committee

Enhancements

• Add ExUnit describe block template.

Bug Fixes

• Don’t error on runtume in mix deps. guardian is too common of a dependency and too many users have the version with the typo installed.
• Fix IEx Mix Run/Debug Configuration for asdf by using absolute path to mix.
• Add OTP 22 and 23 opcodes to Code BEAM Chunk Viewer
  • put_tuple/2
  • bs_get_tail/3
  • bs_start_match3/4
  • bs_get_position/3
  • bs_set_position/2
  • swap/2

Installation Instructions

Elixir is great at handling database transactions with the ubiquitous Ecto library. Read Michal’s article to learn why it’s important and how the functional nature of Elixir helps manage transactional pipelines.

I published a new tutorial on PrismJS: https://alchemist.camp/articles/phoenix-prism-syntax-highlighting

It’s a quick guide to get it set up on Phoenix (or just about any back-end framework that takes an agnostic approach towards JS). The code shown in the tutorial itself uses this setup.

PrismJS is a great option for code syntax highlighting. It supports a vast array of plugins and the total script weighs in at just 2k, gziped. Extra programming languages add 0.3-0.5KB each and themes are around 1KB. It’s used by Stripe, along with many other companies that deeply value documentation.

In this post, I explain some of the actions we took to improve both reliability and speed of our CI build, on an Elixir + Phoenix application.

How we improved our Elixir build speed by 5x

In this episode of ElixirMix, we talk with Travis Elnicky about how Podium hires, trains, and runs a large Elixir shop. We learn why they chose Elixir, how they grew to 130 engineers, how they structure teams, organizing internal training, use their CI setup to give feedback, and much more!

Podcast Episode

I just released a new version, 0.4.0, of Incident, a library that provide abstractions to implement Event Sourcing and CQRS in your application.

In this release, I introduced a mix task to generate events table during setup, new commands and events for the Bank example app and better documentation.

Check it out: https://hex.pm/packages/incident

This week the hosts discuss Strangeloop, Unison, handling breaking changes, refactoring and how to build open systems. https://elixiroutlaws.com/55

In this episode we’ll look at how you can write tests using ExVCR.

https://elixircasts.io/writing-tests-with-exvcr

A new blog post giving an overview of what I’m up to. It teases some of what I expect to write about in the future and lays down some basic info on what I might be releasing and publishing later. A lot of Elixir these days (nice) and also some Vue (actually quite nice).

I implemented the Kalman Filter in Elixir. Cees de Groot made it more user friendly. If your are doing a Nerves project with sensors, signal strength (think Bluetooth) or something similar Kalman is your friend! You’ll find the package on Hex.

Elixir’s Struct mechanism is extensively used and it’s both simple and powerful. And it’s sometimes good to cheat on it a bit, especially in library development. Read Michal’s new article at Curiosum.dev.

Walkthru from Dan on how to prototype a complex search with Dynamic Conditionals in Ecto: https://blog.smartlogic.io/dynamic-conditionals-with-ecto/

How to complete the timing task quickly and efficiently? Here are three common ways to implement timing tasks and their advantages and disadvantages.

In this episode of ElixirMix, we talk with Chris Keathley about Design by Contract, his library Norm. We discuss the what and how, compare it to using Changesets and using it with testing. We set the record straight on Bleacher Report’s early use of Elixir and much more!

Podcast Episode