32: Circuit Breaker and Elixir Patterns with Allan MacGregor

We talk with Allan MacGregor about implementing the Circuit Breaker pattern in Elixir and compare that to just using a job library. We get into a fun discussion about design patterns in Elixir and designing for failure. Allan is creating a project called Site Guardian using the PETAL stack and shares his experiences with it and much more!

Show Notes online - http://podcast.thinkingelixir.com/32

Elixir Community News

• https://elixir-lang.org/blog/2021/01/13/orchestrating-computer-vision-with-elixir/ – New Elixir case study features the company V7 where they use Elixir for orchestrating computer vision.


• https://www.phoenixframework.org/blog/improving-testing-and-continuous-integration-in-phoenix – Phoenix is using Earthly for running tests on CI and locally


• https://github.com/sasa1977/ci – Sasa Juric releases a hex package to run CI


• https://hexdocs.pm/oban/web-changelog.html#v2-5-0-2021-01-15 – Oban Web v2.5.0 is out with new features


• https://hex.pm/blog/hex-v0.21-released – Hex 0.21 released. Adds registry self-hosting and more!


• https://hex.pm/docs/self_hosting – Documentation on self-hosting Hex


• https://twitter.com/josevalim/status/1350004900973981699 – Jose Valim is requesting written guides or blog posts from people who have used "mix phx.gen.auth" and customized it


• https://github.com/erlang-ls/erlang_ls/releases/tag/0.8.0 – Erlang-LS - Language server 0.8 was released along with a VS Code extension


• https://thinkingelixir.com/petal-stack-in-elixir/ – ThinkingElixir post on PETAL stack


• https://changelog.com/posts/petal-the-end-to-end-web-stack – Lars Wikman post on PETAL stack


• https://redrapids.medium.com/petal-liveview-and-lamp-eb5e9f81a804 – Bruce Tate post on PETAL stack


• https://www.lambdadays.org/lambdadays2021/thinking-elixir – ThinkingElixir podcast will record live at LambdaDays 2021 - Feb 16th

Do you have some Elixir news to share? Tell us at @ThinkingElixir or email at [email protected]

Discussion Resources

• https://allanmacgregor.com/posts/circuit-breaker-pattern-in-elixir


• https://siteguardian.dev


• https://www.humi.ca/


• https://en.wikipedia.org/wiki/Flow-based_programming


• https://hex.pm/packages/flowex


• https://www.youtube.com/watch?v=BJVzwaTiOdk


• https://hex.pm/packages/ok


• https://www.amazon.com/Design-Patterns-Elements-Reusable-Object-Oriented/dp/0201633612/


• https://bernheisel.com/blog/nostalgia-programming


• https://dashbit.co/ebooks/the-little-ecto-cookbook – The Little Ecto Cookbook


• https://microservices.io/


• https://www.youtube.com/watch?v=z4p4e9Uwn6I

Guest Information

• https://twitter.com/allanmacgregor – on Twitter


• https://github.com/amacgregor – on Github


• https://allanmacgregor.com – Blog

Find us online

• Message the show - @ThinkingElixir


• Email the show - [email protected]


• Mark Ericksen - @brainlid


• David Bernheisel - @bernheisel


• Cade Ward - @cadebward