Wrote about how to safely run a globally unique process in an Elixir cluster, and a scary story from the past!
Learn about :global for registering unique processes in a cluster, and where using it can go horribly wrong. Or at least, a little bit wrong. And how to avoid weird edge cases. This was a lot of fun and nostalgic to write, hope you enjoy it
Nice article. It makes sense in retrospect, but I didn’t know you could handle global processes in the supervision tree by handling the already-started error and link+return the other pid. Cool trick 
I think it would be worth mentioning Highlander in your article as well. It provides the same functionality as the SingletonManager proposed.
Just recently I came across your blog and I really like the posts! Have read some and the rest are archived in my Readeck. 
Thank you for the story. Clustering in Elixir is easy to do but I know there might be some edge cases I can’t handle.
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