{:ok, "Joel Jucá"}
@joeljuca.com
SWE. Founder & CM @elug-ce.github.io
👉 https://joeljuca.com
#elixirlang #golang #ruby #javascript #typescript #nodejs #scheme #lisp #react #postgres #sqlite #couchdb #linux #freebsd #opensource
👉 https://joeljuca.com
#elixirlang #golang #ruby #javascript #typescript #nodejs #scheme #lisp #react #postgres #sqlite #couchdb #linux #freebsd #opensource
Pinned
{:ok, "Joel Jucá"}
@joeljuca.com
· Jan 1
Ok, it’s 2025 already and I’d like to state my 2025 indie-hacking goals:
- get into the founder mode
- launch my small business app
- launch at least a 2nd app
- deploy AI at work & life
- at least 1K USD ARR
- write articles (at least, monthly)
- get into the founder mode
- launch my small business app
- launch at least a 2nd app
- deploy AI at work & life
- at least 1K USD ARR
- write articles (at least, monthly)
I’m learning Chinese, because yes 😂 I’ve failed to learn French, Italian, and German — so failing at a new language ain’t this hard anymore.
But MAAAN Chinese is hard. I feel like I’m not smart to learn a new language anymore. 😩 But I felt like this while learning English and so here I am.
But MAAAN Chinese is hard. I feel like I’m not smart to learn a new language anymore. 😩 But I felt like this while learning English and so here I am.
October 25, 2025 at 2:57 PM
I’m learning Chinese, because yes 😂 I’ve failed to learn French, Italian, and German — so failing at a new language ain’t this hard anymore.
But MAAAN Chinese is hard. I feel like I’m not smart to learn a new language anymore. 😩 But I felt like this while learning English and so here I am.
But MAAAN Chinese is hard. I feel like I’m not smart to learn a new language anymore. 😩 But I felt like this while learning English and so here I am.
Interesting SWE read. Contains good advices on how to build great software fast, resilient to changes, and how to focus on value-oriented engineering.
charemza.name/blog/posts/a...
charemza.name/blog/posts/a...
It's not a hack to satisfy known requirements
And you should even take pride in doing less
charemza.name
October 21, 2025 at 3:18 PM
Interesting SWE read. Contains good advices on how to build great software fast, resilient to changes, and how to focus on value-oriented engineering.
charemza.name/blog/posts/a...
charemza.name/blog/posts/a...
You know what came to mind these days? #CoffeeScript. A language that brought some elegance of #Ruby to #JavaScript, and made the DX of writing front end code WAY better. I miss it.
I honestly think CS, as a language, did great, and deserved to be preserved and reside amongst us till these days.
I honestly think CS, as a language, did great, and deserved to be preserved and reside amongst us till these days.
October 21, 2025 at 10:57 AM
You know what came to mind these days? #CoffeeScript. A language that brought some elegance of #Ruby to #JavaScript, and made the DX of writing front end code WAY better. I miss it.
I honestly think CS, as a language, did great, and deserved to be preserved and reside amongst us till these days.
I honestly think CS, as a language, did great, and deserved to be preserved and reside amongst us till these days.
Really nice 101 on what MCP is about.
youtu.be/FLpS7OfD5-s
youtu.be/FLpS7OfD5-s
Why MCP really is a big deal | Model Context Protocol with Tim Berglund
YouTube video by Confluent Developer
youtu.be
October 13, 2025 at 3:34 PM
Really nice 101 on what MCP is about.
youtu.be/FLpS7OfD5-s
youtu.be/FLpS7OfD5-s
Reposted by {:ok, "Joel Jucá"}
Hey folks! We have a CVE up for #AshFramework bypass policies. It's a *highly unlikely edge case*. But, as always, we take security extremely seriously and will always follow proper procedure here. Props to @maennchen.dev for reporting and resolving 🙇
October 10, 2025 at 4:05 PM
Hey folks! We have a CVE up for #AshFramework bypass policies. It's a *highly unlikely edge case*. But, as always, we take security extremely seriously and will always follow proper procedure here. Props to @maennchen.dev for reporting and resolving 🙇
This is such a GREAT comparison over performance of different Python versions over Linux, macOS – and even against Node.js 24 and Rust! Interesting times for Python developers.
blog.miguelgrinberg.com/post/python-...
blog.miguelgrinberg.com/post/python-...
Python 3.14 Is Here. How Fast Is It?
In November of 2024 I wrote a blog post titled "Is Python Really That Slow?", in which I tested several versions of Python and noted the steady progress the language has been making in terms of…
blog.miguelgrinberg.com
October 9, 2025 at 9:26 PM
This is such a GREAT comparison over performance of different Python versions over Linux, macOS – and even against Node.js 24 and Rust! Interesting times for Python developers.
blog.miguelgrinberg.com/post/python-...
blog.miguelgrinberg.com/post/python-...
Nix is a great piece of tech — but these constant political fires being lighted up makes me wonder a bit how stable are the collective of people behind it. It feels like there’s a need for some people to learn how to work collaboratively.
October 8, 2025 at 7:29 PM
Nix is a great piece of tech — but these constant political fires being lighted up makes me wonder a bit how stable are the collective of people behind it. It feels like there’s a need for some people to learn how to work collaboratively.
I'm having a good chat w/ ma friend ChatGPT over a distributed system issue and he recommended me using bloom filter over HyperLogLog (my first assumption over a possible/best solution for the problem), and
🤯 OMG – Bloom filters are this absolutely mind-blowing super-clever thing! I am literally 🤯!
🤯 OMG – Bloom filters are this absolutely mind-blowing super-clever thing! I am literally 🤯!
October 6, 2025 at 3:40 PM
I'm having a good chat w/ ma friend ChatGPT over a distributed system issue and he recommended me using bloom filter over HyperLogLog (my first assumption over a possible/best solution for the problem), and
🤯 OMG – Bloom filters are this absolutely mind-blowing super-clever thing! I am literally 🤯!
🤯 OMG – Bloom filters are this absolutely mind-blowing super-clever thing! I am literally 🤯!
Reposted by {:ok, "Joel Jucá"}
Interesse em mestrado em Elixir e Computação de Alto Desempenho no Ceará ou no Paraná
forms.gle/zgpuvtYEyUhF...
forms.gle/zgpuvtYEyUhF...
October 3, 2025 at 5:50 PM
Interesse em mestrado em Elixir e Computação de Alto Desempenho no Ceará ou no Paraná
forms.gle/zgpuvtYEyUhF...
forms.gle/zgpuvtYEyUhF...
Interesting piece of advise for SWEs over AI and code/engineering.
Write the Damn Code, by Anton Zhiyanov.
👉 antonz.org/write-code/
"(...) Get involved with the code, don't leave it all to AI." 👌
Write the Damn Code, by Anton Zhiyanov.
👉 antonz.org/write-code/
"(...) Get involved with the code, don't leave it all to AI." 👌
Write the damn code
You are a software engineer. Don't become a prompt refiner.
antonz.org
September 30, 2025 at 5:16 PM
Interesting piece of advise for SWEs over AI and code/engineering.
Write the Damn Code, by Anton Zhiyanov.
👉 antonz.org/write-code/
"(...) Get involved with the code, don't leave it all to AI." 👌
Write the Damn Code, by Anton Zhiyanov.
👉 antonz.org/write-code/
"(...) Get involved with the code, don't leave it all to AI." 👌
And Torvalds strikes again, now against the "stupid helper" 😂
👉 lkml.org/lkml/2025/8/...
I'm a big fan of Torvalds – he's a GREAT engineer and personality, and I do fear what the world will be after he's gone. But he can't be taken as a role model when it comes to communication. 🤦♂️😅
👉 lkml.org/lkml/2025/8/...
I'm a big fan of Torvalds – he's a GREAT engineer and personality, and I do fear what the world will be after he's gone. But he can't be taken as a role model when it comes to communication. 🤦♂️😅
LKML: Linus Torvalds: Re: [GIT PULL] RISC-V Patches for the 6.17 Merge Window, Part 1
lkml.org
September 29, 2025 at 1:32 PM
And Torvalds strikes again, now against the "stupid helper" 😂
👉 lkml.org/lkml/2025/8/...
I'm a big fan of Torvalds – he's a GREAT engineer and personality, and I do fear what the world will be after he's gone. But he can't be taken as a role model when it comes to communication. 🤦♂️😅
👉 lkml.org/lkml/2025/8/...
I'm a big fan of Torvalds – he's a GREAT engineer and personality, and I do fear what the world will be after he's gone. But he can't be taken as a role model when it comes to communication. 🤦♂️😅
Among other #Postgres feats beings released in v18, one stood out for me: UUIDv7 is not built-in. What a great news! 👌
www.postgresql.org/about/news/p...
www.postgresql.org/about/news/p...
PostgreSQL 18 Released!
The [PostgreSQL Global Development Group](https://www.postgresql.org) today announced the release of [PostgreSQL 18](https://www.postgresql.org/docs/18/release-18.html), the latest version of the worl...
www.postgresql.org
September 25, 2025 at 5:51 PM
Among other #Postgres feats beings released in v18, one stood out for me: UUIDv7 is not built-in. What a great news! 👌
www.postgresql.org/about/news/p...
www.postgresql.org/about/news/p...
Every single time I open #LinkedIn to check if there are smt worth reading, I get myself upset by reading BS that's so absurd, so cuckoo crazy, so non-logical that I doubt these absurdities are made out of lack of knowledge.
They're not. These are posts made out of a pure desire to mislead people.
They're not. These are posts made out of a pure desire to mislead people.
September 25, 2025 at 4:15 PM
Every single time I open #LinkedIn to check if there are smt worth reading, I get myself upset by reading BS that's so absurd, so cuckoo crazy, so non-logical that I doubt these absurdities are made out of lack of knowledge.
They're not. These are posts made out of a pure desire to mislead people.
They're not. These are posts made out of a pure desire to mislead people.
TIL how to take full-page screenshots on both Chrome n Firefox (and their variants):
In Chrome, open DevTools → Cmd+Shift+P → type "screenshot" → choose "Capture full size screenshot"
In Firefox, right-click the page → "Take Screenshot" → "Save full page"
These feats were there, all the time... 🤯
In Chrome, open DevTools → Cmd+Shift+P → type "screenshot" → choose "Capture full size screenshot"
In Firefox, right-click the page → "Take Screenshot" → "Save full page"
These feats were there, all the time... 🤯
September 23, 2025 at 2:52 PM
TIL how to take full-page screenshots on both Chrome n Firefox (and their variants):
In Chrome, open DevTools → Cmd+Shift+P → type "screenshot" → choose "Capture full size screenshot"
In Firefox, right-click the page → "Take Screenshot" → "Save full page"
These feats were there, all the time... 🤯
In Chrome, open DevTools → Cmd+Shift+P → type "screenshot" → choose "Capture full size screenshot"
In Firefox, right-click the page → "Take Screenshot" → "Save full page"
These feats were there, all the time... 🤯
Hoje tropecei nessa talk excepcional do Renan – nosso querido Milhouse, sobre a runtime Elixir/Erlang, no @elug-ce.github.io.
#elixirlang #myelixirstatus
Excepcional é pouco pra descrever! O Renan explica *no detalhe* o porquê de Elixir/Erlang ser tão bom em paralelismo. 😍
👇 youtu.be/ZOQzS3wEBCo
#elixirlang #myelixirstatus
Excepcional é pouco pra descrever! O Renan explica *no detalhe* o porquê de Elixir/Erlang ser tão bom em paralelismo. 😍
👇 youtu.be/ZOQzS3wEBCo
It's About Runtime: Elixir Além do Hype por Renan Ranelli (Milhouse) | 10º Meetup Elug CE
YouTube video by Elug CE
youtu.be
September 23, 2025 at 12:44 PM
Hoje tropecei nessa talk excepcional do Renan – nosso querido Milhouse, sobre a runtime Elixir/Erlang, no @elug-ce.github.io.
#elixirlang #myelixirstatus
Excepcional é pouco pra descrever! O Renan explica *no detalhe* o porquê de Elixir/Erlang ser tão bom em paralelismo. 😍
👇 youtu.be/ZOQzS3wEBCo
#elixirlang #myelixirstatus
Excepcional é pouco pra descrever! O Renan explica *no detalhe* o porquê de Elixir/Erlang ser tão bom em paralelismo. 😍
👇 youtu.be/ZOQzS3wEBCo
I recently had issues with insanely high disk usage in macOS, and I tried a multitude of approaches to solve it somehow. After *months* in struggle, the two actions that got free space back was:
1. remove WhatsApp Desktop (30~40GB for cached conversations; ???)
2. rebuild Spotlight index (~30GB!)
1. remove WhatsApp Desktop (30~40GB for cached conversations; ???)
2. rebuild Spotlight index (~30GB!)
September 19, 2025 at 4:20 PM
I recently had issues with insanely high disk usage in macOS, and I tried a multitude of approaches to solve it somehow. After *months* in struggle, the two actions that got free space back was:
1. remove WhatsApp Desktop (30~40GB for cached conversations; ???)
2. rebuild Spotlight index (~30GB!)
1. remove WhatsApp Desktop (30~40GB for cached conversations; ???)
2. rebuild Spotlight index (~30GB!)
I'm not one of these blind fans of AI/LLMs who think they'll take all the jobs, run the world, bla bla bla – they're tools, quite useful and very powerful, but still, tools!
But, given this statement, omg I'm so GLAD these things exist! What a GREAT TIME to be a software engineer! 😄
But, given this statement, omg I'm so GLAD these things exist! What a GREAT TIME to be a software engineer! 😄
September 17, 2025 at 6:52 PM
I'm not one of these blind fans of AI/LLMs who think they'll take all the jobs, run the world, bla bla bla – they're tools, quite useful and very powerful, but still, tools!
But, given this statement, omg I'm so GLAD these things exist! What a GREAT TIME to be a software engineer! 😄
But, given this statement, omg I'm so GLAD these things exist! What a GREAT TIME to be a software engineer! 😄
This Projects feature in ChatGPT (and other AI chats) is a game changer!
Given that you can upload files to be used as context, set up a system prompt that’s used by all Projects chats, and have in-ctx chats grouped together makes my AI discussions over software Eng & architecture WAY better!
Given that you can upload files to be used as context, set up a system prompt that’s used by all Projects chats, and have in-ctx chats grouped together makes my AI discussions over software Eng & architecture WAY better!
September 15, 2025 at 2:14 AM
This Projects feature in ChatGPT (and other AI chats) is a game changer!
Given that you can upload files to be used as context, set up a system prompt that’s used by all Projects chats, and have in-ctx chats grouped together makes my AI discussions over software Eng & architecture WAY better!
Given that you can upload files to be used as context, set up a system prompt that’s used by all Projects chats, and have in-ctx chats grouped together makes my AI discussions over software Eng & architecture WAY better!
I’m a fan of the Game of Thrones show. I watched it many times, and I love to see flashes of the show on YouTube.
One of the characters I admire the most is Brienne of Tarth. She’s a knight in every possible way: honorable, loyal, fearless, skilled in swordplay and experienced with real battles.
+
One of the characters I admire the most is Brienne of Tarth. She’s a knight in every possible way: honorable, loyal, fearless, skilled in swordplay and experienced with real battles.
+
September 14, 2025 at 9:51 AM
I’m a fan of the Game of Thrones show. I watched it many times, and I love to see flashes of the show on YouTube.
One of the characters I admire the most is Brienne of Tarth. She’s a knight in every possible way: honorable, loyal, fearless, skilled in swordplay and experienced with real battles.
+
One of the characters I admire the most is Brienne of Tarth. She’s a knight in every possible way: honorable, loyal, fearless, skilled in swordplay and experienced with real battles.
+
Simon Willison is once more teaching us smt, w/ "LLMs are like a lossy encyclopedia." I like the analogy.
simonwillison.net/2025/Aug/29/...
simonwillison.net/2025/Aug/29/...
Lossy encyclopedia
Since I love collecting questionable analogies for LLMs, here's a new one I just came up with: an LLM is a lossy encyclopedia. They have a huge array of facts …
simonwillison.net
September 4, 2025 at 2:15 PM
Simon Willison is once more teaching us smt, w/ "LLMs are like a lossy encyclopedia." I like the analogy.
simonwillison.net/2025/Aug/29/...
simonwillison.net/2025/Aug/29/...
TIL WTF are HyperLogLogs.
TLDR: it's **pure magic!**
TLDR: it's **pure magic!**
September 3, 2025 at 9:44 PM
TIL WTF are HyperLogLogs.
TLDR: it's **pure magic!**
TLDR: it's **pure magic!**
Yep, I just cleaned a 5K+ unread emails inbox. I'm feeling so much totally entirely definitely a responsible adult right now 😂
August 28, 2025 at 9:54 PM
Yep, I just cleaned a 5K+ unread emails inbox. I'm feeling so much totally entirely definitely a responsible adult right now 😂
TIL about this insane amount of people who died on Everest. Seriously — WTF is wrong with these people? Escalating the highest and deadliest mount in the world just to… get back right after, while seriously risking your own death.
Sorry, but I prefer hobbies simpler, safer.
youtu.be/2XOD4b5uwfg
Sorry, but I prefer hobbies simpler, safer.
youtu.be/2XOD4b5uwfg
The Worst Mount Everest Deaths in Human History
YouTube video by Simple Paint
youtu.be
August 28, 2025 at 5:17 AM
TIL about this insane amount of people who died on Everest. Seriously — WTF is wrong with these people? Escalating the highest and deadliest mount in the world just to… get back right after, while seriously risking your own death.
Sorry, but I prefer hobbies simpler, safer.
youtu.be/2XOD4b5uwfg
Sorry, but I prefer hobbies simpler, safer.
youtu.be/2XOD4b5uwfg