While working on a side project, I got to try out a new supervision tree method for trapping processes that may never recover due to outside forces.

https://blog.oestrich.org/2018/07/otp-tether/

Another rate-limiting library https://github.com/whitered/ratekeeper

case Ratekeeper.register("myapi.org", 10_000) do
  nil -> raise "Rate limits exceeded, request not allowed in next 10 seconds"
  delay ->
    :timer.sleep(delay)
    MyApi.do_request()
end

A post with some tips and experiences about the migration of an application with a regular database to a multi-tenancy one in Elixir with Ecto.

http://dreamingecho.es/blog/a-dive-into-database-multi-tenancy-in-elixir-with-ecto

Just pushed to Hex the first cut of harnais_map, a small package in the Harnais family to test maps and their contents.

The package will compare two maps, key by key and report the differences.

http://www.jackmarchant.com/articles/composing-ecto-queries

https://minhajuddin.com/2018/07/06/7-ways-of-doing-fizz-buzz-in-elixir-and-other-clickbaity-stuff/

We have been deploying/running production applications for about two years now and the first problem that comes to mind while deploying OTP releases is Build-time vs Run-time environment configuration. While running a Mix project there isn’t much of a difference between build-time and run-time as you are running the app in the same environment in which you’re compiling (building) it. However, that might not be the case when using releases. At Annkissam, we have come up with a few solutions to that problem which I explain better in this post.

IEx.pry/0 is great for debugging Elixir applications, but can be perplexing to integrate into your tests. Here’s some quick tips.

https://adamdelong.com/iex-pry-test/

KaufmannEx is a library for building highly parallel Kafka backed services in Elixir. We’ve written a blog post looking at its features, structures.

https://medium.com/@7mind_dev/kaufmann-ex-317415c27978

A Lisp interpreter in Elixir. Implements most of the constructs included in the Scheme flavor of Lisp. https://github.com/farazhaider/lispex

You can also find a detailed blog post about the project here

A tiny wrapper on top of the awesome ferd/vmstats package which pushes a lot of useful metrics about the erlang runtime using the statix library to a StatsD server. https://github.com/tripping/vmstats_ex

Drab has changed the API, last time before the stable release. v0.9.0 is the last “big” release before upcoming holy grail, v1.0.0!

https://github.com/grych/drab/releases/tag/v0.9.0

Tree structure & hierarchy for ecto models with ltree(Postgres)

https://github.com/GreenNerd-Labs/hierarch

Check out this article on how we use the Circuit Breaker pattern at Teachers Pay Teachers to make the site more reliable.

https://medium.com/teacherspayteachers/automated-fault-tolerance-using-the-circuit-breaker-pattern-3884f6e99133

A little TIL about how to auto-generate UUID fields automatically in Phoenix with Postgresql.

http://dreamingecho.es/til/generate-uuid-fields-in-phoenix-with-postgresql

This is part 5 of a series on building a CRUD app with Elixir as the JSON REST API and Elm as the SPA.

Elixir API and Elm SPA - Part 5: Persisting session data to localStorage

Just released Ecto.Observable - an easy way to bring “observable” functionality to your Ecto.Repo’s. Hook into the life cycle of your records to expand features without muddying your contexts.

Check it out at: https://github.com/nsweeting/ecto_observable

Work in progress! PR’s and suggestions welcome!

ExVenture is a multiplayer text-based game server (aka a MUD). This month had a lot of exciting additions including an overworld map system and web client updates.

https://blog.oestrich.org/2018/06/exventure-updates/

Here is part 2 of my new tutorial about Elixir and Phoenix passwordless and databaseless authentication, which covers sending emails with the generated authentication link and connecting to the user socket using the assigned token.

http://codeloveandboards.com/blog/2018/06/20/elixir-and-phoenix-basic-passwordless-and-databaseless-authentication-pt-2/

Happy coding!

4 quick tips on how to resolve a common error in Elixir. https://adamdelong.com/elixir-module-not-available