A Common Phoenix.Socket check_origin error and its Simple Fix revelry.co/insights/dev...

This one goes out to everyone who no longer has a mother to celebrate the holidays with.

Creating is faster than searching commaok.xyz/ai/just-in-t...

I was not able to get this to work. Still half baked.

Even if you’re not into event sourcing and perhaps think it’s the same as using a message queue, Kafka, or Phoenix PubSub, which it’s not, you will be a better engineer if you read this article. It is actually not about CQRS. BTW - a “variant” is a class of ticket for a show, such as VIP.

2026 will be the year of ditching MCP servers

Please remember to dispose of your one-off apps in the appropriate bins

Seeing one black family in In and Out Burger and realizing you have never seen a single black person in any In-N-Out Burger in California means we have utterly failed to extend middle classness to anyone who looks like they may have descended from slaves who were tortured on US plantations.

A new post in my series on the Ash Framework. This one explores the underlying mechanics of Ash validation and where Funx can help when checks need more structure or concurrency. www.joekoski.com/blog/2025/11... #elixirlang @pragprog.com

Event Streaming: Like events flowing down the river. Consumers process them as they pass by, but they eventually fall over the waterfall at the end. Gone. Event Sourcing: Events flowing down the river, but they're collected at the riverbank. Stored permanently. Same river. Different approach.

I’m all for FP’s bias towards unary functions but that one parameter should be a map. Accepting one or two “important” arguments followed by an extra “oops - options” looks and feels like a hack. Elixir and JavaScript both fall into this trap. Ironically, React functional components got it right.

TanStack Start and shadcn are the current best ways to start a new React app but you should also try Svelte 5. medium.com/@aldiiii/goo...

Functional programming doesn’t have to need all relevant data to be loaded into memory but this is a requirement for most FP libraries. This is why the Ash framework succeeds where other approaches fail, since calculations in Ash are declarative but work with distributed databases such as Postgres.

This is a fast way to learn functional programming in #elixirlang . www.funxlib.com/tutor.html

Today is photo liberty day for those who aren’t feeling it this year.

The color of that cloud was not doctored

I've built an app to better coordinate/document events for our school's parent council. Ash, Phoenix, DaisyUI, Fly.io + a good chunk of Claude Code assisted building. People in the day job were very surprised by Phoenix/Elixir standards like PubSub + Presence 😅 Parents love it. #elixirlang

Finally! youtube.com/shorts/zq9gp...

And a crane in a pine tree

Last year I hoped that Kotlin would provide a well-worn path for our Java developers to transition to functional programming. Although the team embraced data objects, they questioned the value of Arrow given velocity pressure.🧵https://www.funxlib.com/book.html

Elixir/Erlang/Gleam is an important solution to the many puzzles posed by highly available services. The BEAM was designed to maximize uptime. But there’s a lot more to mitigating inevitable failures and self-inflicted bugs than deploying on OTP. authress.io/knowledge-ba...

Sorry you need Apple news for this one. apple.news/KVObEsex5Pt6...

The US is speed running into the dark ages thanks not to this maladministration (one of many) but instead wholly to the ignorant, gullible, superstitious, angry, and suicidal electorate that enabled them.

Advice for mentees: Listen to the old people who are willing to help you. Ask questions. You will remember the long conversations that you didn’t anticipate for the rest of your life. Later, pay it forward.

I wonder what I’m missing by not embracing Google’s new dev tools. #2025goals

Better error handling by expressing intent with the Either DSL, by @jkwa.bsky.social www.joekoski.com/blog/2025/12... #elixirlang def change(changeset, _opts, _context) do Ash.Changeset.after_action(changeset, fn changeset, assignment -> either assignment.superhero_id, as: :tuple do

An example of implicit context is "DELETE /foo" where the thing to delete depends on the authenticated context. Seriously. NEVER DO THIS.

If I could make this for you and jam it into the Internet, I would. www.onceuponachef.com/recipes/chai...

Type 5 diabetes is one result of hunger during childhood. You know. The kind of hunger that MAGA Christians are perfectly fine with if the kids are darker than a grocery bag. www.huffpost.com/entry/type-5...

Combining funx and Ash is The Way now if only we could agree on a way to do error handling well without throwing exceptions and no, the solution isn’t :ok tuples.

Part 39: How to Use Ash Generic Actions and Avoid Repeating Your Business Logic #elixirlang medium.com/@lambert.kam...

Unit and property-based testing in #elixirlang

The grinch who stole healthcare

Adding a column to a NestJS project and making it searchable: 40 files changed. Controller, service, migrations, dto, entity, tests, and on and on. Even in the age of AI, the nicest adjective I can use is “insanity.” A shameful waste of money. Stupidity repeated by smart people. Use Ash instead.

Why go to the trouble to learn Ash? 1. Hand coding table stakes is a rookie mistake. Sure — do that on a hobby project for fun learning 2. Believing that hard things - like authorization - are easy is the hallmark of inexperience 3. Don’t take my word for it #elixirlang youtube.com/clip/UgkxfwP...

Plate tectonics really needs to finish its job.

I would not choose to code Elixir if it weren’t for the BEAM. Elixir is a quirky mix of good and bad ideas, the worst of all by far being {:ok} tuples. We overlook its flaws and embrace the rest because Elixir is a door to supervision trees, inboxes, ultralight processes, and Ash — without Erlang.

About building AI features in real apps and how Elixir is the bomb #elixirlang www.youtube.com/live/EcHhhP5...

Testing server-rendered HTML: Make a request, look at the result. Testing React et al: Make a request. Receive HTML. Ignore it! It also contains a string. The string is attached to a bird The bird speaks latin Find an antiquities professor He can distract the bird While you build a fake browser

Implicit context is never a good idea whether it’s an application or real life. Be explicit. Never assume the other entity knows what you’re talking about. Defend against CSRF everywhere.

Frontend is much harder than backend. That’s why frontend will be eliminated by voice except for the hearing impaired which includes every elderly person. I have no doubt that those who can afford better hearing aids (better because of AI) will get them. That’s not to say Everything’s Wonderful.

I only use Opus 4.5 and my specs are not that great. I don’t write code. At all. simonwillison.net/2025/Dec/15/...

Coding? Writing? Put this fantastic show from WTJU’s classical marathon in the background. Furniture music www.wtju.net/recent-shows...

Separating side effects from your code so AI can test it without lying or creating mock slop. interjectedfuture.com/what-is-alge...

Rebasing is a choice and not a good one.

Experiencing nonconsensual downtime? It's a unique and brief opportunity to learn about: 1. Event Sourcing @martin.eventmodeling.org leanpub.com/eventmodelin... 2. Elixir @josevalim.bsky.social elixir-language-tour.swmansion.com/introduction 3. Ash framework for Elixir @zachdaniel.dev ash-hq.org

Use pg-squeeze ! #postgres boringsql.com/posts/vacuum...

Every software company has steaks and potatoes. If you’re not working on the steaks, you’d better have a plan to get there.