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Ethan Gunderson

@ethangunderson.com
206 followers 104 following 141 posts

Elixir and observability stuff. Principal engineer at Cars Commerce. Weird coffee person. Food enthusiast. Father to two 👦, living in Minnesota, USA.

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Ethan Gunderson @ethangunderson.com · 21/09/2026
Both, but if I had to pick one I’d pick Telemetry.
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Ethan Gunderson @ethangunderson.com · 15/09/2026
I don't know where the gaps are yet, but swapping my cowork usage over to Hermes is on my short list.
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Ethan Gunderson @ethangunderson.com · 14/09/2026
I do like this use case is now covered by multiple different price points. 😂
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Ethan Gunderson @ethangunderson.com · 14/09/2026
Didn't Apple already solve for that use case with the iPad?
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I’m a Ghoul’s Girl @saraghaleb.bsky.social · 04/09/2026
You should be allowed to leave work early if the vibes are off
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Ethan Gunderson @ethangunderson.com · 28/08/2026
Taking my kid to a Tame Impala concert tonight and I can only assume this will be me.
static.klipy.com
Jon Hamm Jonhamm
ALT: Jon Hamm Jonhamm
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Ethan Gunderson @ethangunderson.com · 12/08/2026
Just get an AI to learn the role and train the other AIs.
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Ethan Gunderson @ethangunderson.com · 19/07/2026
Spending $400 to save $10 by not having to purchase another poorly done 3d printed thing for my kids.
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Ethan Gunderson @ethangunderson.com · 04/07/2026
I still can’t figure out how to get custom sleep screens though. 😅
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Ethan Gunderson @ethangunderson.com · 04/07/2026
FWIW, I think crosspoint helps with a lot of that. At least getting books on it becomes drag and drop from a browser.
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Ethan Gunderson @ethangunderson.com · 18/06/2026
Working with my 8 year old on designing a game to teach him how to type has been a good counterpoint to LLM induced anxiety and dread.
A pokemon learn-to-type game
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ElixirConf @elixirconf.bsky.social · 15/06/2026
⚡ Metrics. Traces. Telemetry. Learn how to instrument Elixir applications and build a stronger observability foundation with @ethangunderson.com and Zack Kayser. A practical training focused on understanding and debugging production systems. 📍 In-person only: Sept 9 elixirconf.com
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Ethan Gunderson @ethangunderson.com · 12/06/2026
I've had much better luck using openspec's propose skill instead of built in plan mode. It seems to do a better job of poking at my ideas and assumptions.
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Ethan Gunderson @ethangunderson.com · 12/06/2026
So far, Fable is the only model to take my "reply to me like you are Carmy from The Bear" comment in my Claude file seriously. However, it does not pick up on my The West Wing references. So, there is still room for LLM improvement.
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Ethan Gunderson @ethangunderson.com · 08/06/2026
I needed a world map for a project. Asked Claude to render one. I wish I didn't.
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Peter Ullrich @peterullrich.com · 25/05/2026
🚨 Update hackney 🚨 A **bunch** of vulnerabilities I reported in hackney were just disclosed. Please upgrade to 4.0.1 ASAP. I know this is gonna start dependency hell so please take some time for this. Please RT for reach. #ElixirLang cna.erlef.org/cves/
cna.erlef.org
List of Issued CVE’s
This project handles the CVE Numbering Authority (CNA) for the Erlang Ecosystem Foundation (EEF).
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Ethan Gunderson @ethangunderson.com · 25/05/2026
I didn’t realize how much I wanted this meal until reading this.
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Ethan Gunderson @ethangunderson.com · 04/05/2026
I really don't remember the last time I had a workday that wasn't interrupted by a third party incident of some sort. Time to refresh that XKCD.
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Ethan Gunderson @ethangunderson.com · 30/04/2026
Just walking through downtown Chicago triggered that feeling for me recently. Walking to different companies, meetups, whatever was peak 2010-2014 for me.
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Tyler A. Young ⚗️🧑🏻‍💻 @tylerayoung.com · 28/04/2026
This post from @josevalim.bsky.social is such important context for anyone trying to evaluate the performance of LLMs. They're super useful in lots of cases! ...but they're absolutely a hindrance in many others. nitter.net/josevalim/st... #ElixirLang
nitter.net
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Ethan Gunderson @ethangunderson.com · 27/04/2026
Today I was reminded of one of my favorite pages on the internet. wiki.c2.com?PokemonExcep...
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Bernie Michalik @berniemichalik.ca · 18/04/2026
My not so humble opinion in dealing with Security Architects and Spdcialists over four decades is that many hold users in contempt and do not care that their products and solutions are painful to use.
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Accented Cinema @accentedcinema.bsky.social · 17/04/2026
Why do the Japanese like their buns askew (2026)
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Ethan Gunderson @ethangunderson.com · 18/04/2026
39 seconds into the Clojure documentary and I can already tell that this is going to be amazing.
Rich, in a hammock, in a forest.
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Ethan Gunderson @ethangunderson.com · 17/04/2026
The answer is in the question.
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Ethan Gunderson @ethangunderson.com · 09/04/2026
"It’s painfully obvious that nobody was attempting to use this software." As in they have no customers or no one was dogfooding it?
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Corey Quinn @quinnypig.com · 03/04/2026
I’m nostalgic for the days when the grift was behind closed doors.
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Peter Ullrich @peterullrich.com · 25/03/2026
Thanks to the increased productivity with AI, we can finally spend more time in Scrum meetings
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Andrea Leopardi @whatyouhi.de · 16/03/2026
I just released a lil @elixir-lang.org library for generating docs about telemetry events from structured data. Love me some telemetry events but they're often an underdocumented aspect of libraries. hex.pm/packages/tel... Feedback welcome 👐
hex.pm
telemetry_docs
Generates Markdown documentation from structured telemetry event definitions.
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Ethan Gunderson @ethangunderson.com · 16/03/2026
It’s also not true about every suburb. The place I live now is far more walkable than where I lived in the city. I do really miss not being surrounded by franchises though.
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Ethan Gunderson @ethangunderson.com · 07/03/2026
Tired: AI won't take your job, but someone using it will. Wired: AI won’t take your job, bad management decisions wrapped in an AI trench coat will.
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Ethan Gunderson @ethangunderson.com · 06/03/2026
But for real, what's going on over at Github?
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Ethan Gunderson @ethangunderson.com · 06/03/2026
When Claude writes test first: HAHA YES THIS IS GREAT When Claude goes off the rails, spits out code, pretends tests don't exist: Listen here you little shits.
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Ethan Gunderson @ethangunderson.com · 05/03/2026
Sounds like open source with more steps.
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Ethan Gunderson @ethangunderson.com · 05/03/2026
Reminds me of the people promoting "everyone will have their own on-demand novels, movies, music and they will love it" and similar nonsense.
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Dima Mikielewicz @dimamik.bsky.social · 04/03/2026
OpenAI published a repo to orchestrate AI agents built primarily with Elixir (96.1%): github.com/openai/symph... #elixirlang
github.com
GitHub - openai/symphony: Symphony turns project work into isolated, autonomous implementation runs, allowing teams to manage work instead of supervising coding agents.
Symphony turns project work into isolated, autonomous implementation runs, allowing teams to manage work instead of supervising coding agents. - openai/symphony
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Ethan Gunderson @ethangunderson.com · 02/03/2026
One of these days a bloom filter is going to be the solution to my problems. Today is not that day.
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Ethan Gunderson @ethangunderson.com · 18/02/2026
I have a new name for posts like this. Where every sentence is spread out. Lots of sentences. Many words. And yet, says nothing unique or of importance. And obviously written by an LLM. Chicken nugget posts.
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Ethan Gunderson @ethangunderson.com · 18/02/2026
My 7 year old introduced me to the phrase "chicken nuggets for brains" and I've never had a phrase enter my daily usage so quickly.
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Ethan Gunderson @ethangunderson.com · 16/02/2026
Sounds like they're putting their thumb on the scale for Grok.
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Ethan Gunderson @ethangunderson.com · 11/02/2026
Figured this out just yesterday when Facetiming with someone and they said my audio was shit.
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Arizona Right Watch @azrww.bsky.social · 04/02/2026
Highlighting the speaker who stood in front of the Surprise mayor and told him to consider what the Mayor of Ohrdruf must’ve thought before he died by suicide: “He might have thought ‘how is this my fault I had no jurisdiction over this’ maybe he said ‘this site was not subject to local zoning.’”
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Ethan Gunderson @ethangunderson.com · 03/02/2026
It’s pronounced claw-day, right?
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Ethan Gunderson @ethangunderson.com · 03/02/2026
Ripping a Lilo & Stitch cd so I can put it on my iPod while waiting for Claude to finish a task is apparently something I do in 2026. What a weird timeline.
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Ethan Gunderson @ethangunderson.com · 01/02/2026
Labels not including track metadata on newly manufactured CDs has to be some of the laziest shit I've seen in awhile.
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Ethan Gunderson @ethangunderson.com · 24/01/2026
Not just business too. The amount of government related stuff that’s only available of FB is a weekly rant from me.
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Ethan Gunderson @ethangunderson.com · 15/01/2026
Buying physical media every time I read an article on AI written by three LLMs in a trench coat is a fun new way to play "markets can remain irrational longer than you can remain solvent".
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Ethan Gunderson @ethangunderson.com · 09/01/2026
Oh good question. I don't really know what I'm doing, but if you go with Proxmox and Tailscale, setting up subnet routes on the Proxmox host means you don't need to setup Tailscale on each container/vm.
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Ethan Gunderson @ethangunderson.com · 09/01/2026
I'm a few weeks into having a homelab and it's seriously so much fun. Over the weekend I needed a Windows install running on x86 (long story). I thought I was stuck since I have an M1 machine...until I realized I could just spin one up in Proxmox. 30 minutes later I was good to go.
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Ethan Gunderson @ethangunderson.com · 09/01/2026
Claude Code has greatly decreased the amount of time it takes me to go from idea to abandoned project.
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