Jany Koščo
@s7anley.bsky.social
Senior Staff Engineer at Productboard
We have a full day to learn and explore today. Someone showed me buildermethods.com/agent-os and it really fits how I work: staged execution, fix and improve each phase, stay in control while it handles the heavy lifting.
Agent OS | The system for spec-driven development with AI coding agents
Agent OS is a popular system spec-driven development with AI coding agents. It's a free open-source framework from Builder Methods, created by Brian Casel.
buildermethods.com
November 7, 2025 at 12:54 PM
We have a full day to learn and explore today. Someone showed me buildermethods.com/agent-os and it really fits how I work: staged execution, fix and improve each phase, stay in control while it handles the heavy lifting.
Recently, I've started looking into architecture. Browsing the competition for the best building of 2025 is bringing me a lot of joy. Fun fact: I can't walk around Prague now because all I do is look at buildings. 😅
www.stavbaroku.cz/stavba-roku/
www.stavbaroku.cz/stavba-roku/
Stavba roku
NOMINAČNÍ VEČER STAVBA ROKU 2025 se uskuteční v pondělí 8. září 2025 v Dopravní hale Národního technického muzea v Praze. GALAVEČER STAVBA ROKU 2025 se uskuteční v úterý 4. listopadu 2025 v Rudolfinu…
www.stavbaroku.cz
November 5, 2025 at 12:36 PM
Recently, I've started looking into architecture. Browsing the competition for the best building of 2025 is bringing me a lot of joy. Fun fact: I can't walk around Prague now because all I do is look at buildings. 😅
www.stavbaroku.cz/stavba-roku/
www.stavbaroku.cz/stavba-roku/
My first thought after reading about the heist in the Louvre was, "Is this a promo for the some new season of La Casa de Papel?" 😅
October 20, 2025 at 5:55 AM
My first thought after reading about the heist in the Louvre was, "Is this a promo for the some new season of La Casa de Papel?" 😅
I have been waiting for this for a long, long time. 🥳
github.blog/changelog/20...
github.blog/changelog/20...
Pull request "Files changed" public preview now supports commenting on unchanged lines - GitHub Changelog
We have a major update to announce to the new pull request “Files changed” page: you can now comment anywhere in a changed file! 🎉 This feature and the new…
github.blog
September 26, 2025 at 9:05 AM
I have been waiting for this for a long, long time. 🥳
github.blog/changelog/20...
github.blog/changelog/20...
TIL UUID5 generates IDs deterministically. Knowing this before, would've saved us from a bit of over-engineering during tenant provisioning and merges.
www.sohamkamani.com/uuid-version...
www.sohamkamani.com/uuid-version...
A Complete Guide to UUID Versions (v1, v4, v5) - With Examples
This post will describe UUID v1, v4, and v5, with examples. We will go through their implementation and differences, and when you should use them
www.sohamkamani.com
September 25, 2025 at 7:36 AM
TIL UUID5 generates IDs deterministically. Knowing this before, would've saved us from a bit of over-engineering during tenant provisioning and merges.
www.sohamkamani.com/uuid-version...
www.sohamkamani.com/uuid-version...
PostgreSQL 18 is going to be huge. I'll try to monitor and later share how Async I/O helped us in production. Additionally, B-tree skip scans are something that could help us prevent some degradations we've seen in the past.
www.crunchydata.com/blog/get-exc...
www.crunchydata.com/blog/get-exc...
Get Excited About Postgres 18 | Crunchy Data Blog
New to Postgres 18, features like asynchronous i/o, uuid v7, b-tree skip scans, and virtual generated columns.
www.crunchydata.com
September 15, 2025 at 12:12 PM
PostgreSQL 18 is going to be huge. I'll try to monitor and later share how Async I/O helped us in production. Additionally, B-tree skip scans are something that could help us prevent some degradations we've seen in the past.
www.crunchydata.com/blog/get-exc...
www.crunchydata.com/blog/get-exc...
Reposted by Jany Koščo
It's so hard to be opinionated in programming
September 15, 2025 at 5:42 AM
It's so hard to be opinionated in programming
This is a really nice summary – I see it the same way. LLMs let me try different approaches more easily and work on multiple things at once, but they don't solve the core problem because I can only work once I know what I need to do. ordep.dev/posts/writin...
Writing Code Was Never The Bottleneck
LLMs make it easier to write code, but understanding, reviewing, and maintaining it still takes time, trust, and good judgment.
ordep.dev
September 5, 2025 at 7:29 AM
This is a really nice summary – I see it the same way. LLMs let me try different approaches more easily and work on multiple things at once, but they don't solve the core problem because I can only work once I know what I need to do. ordep.dev/posts/writin...
Stuck with Arc despite Dia and fewer dev vibes… but Atlassian buying it? Uf 😅
Your Tuesday in 2030
Or why The Browser Company is being acquired to bring Dia to the masses.
browsercompany.substack.com
September 4, 2025 at 1:49 PM
Stuck with Arc despite Dia and fewer dev vibes… but Atlassian buying it? Uf 😅
Reposted by Jany Koščo
I am looking for a job. Are you looking for a hands-on technical leader in Java and Kotlin ecosystem? You have unique opportunity to snatch me. More details here blog.krecan.net/2025/08/25/i...
I am looking for a job
I am looking for a job. In short, I am looking for a hands-on tech leadership role, ideally around the JVM ecosystem. I can offer Pragmatic approach to software design and system architecture I hav…
blog.krecan.net
August 25, 2025 at 8:44 AM
I am looking for a job. Are you looking for a hands-on technical leader in Java and Kotlin ecosystem? You have unique opportunity to snatch me. More details here blog.krecan.net/2025/08/25/i...
Working with agents in CLI is definitely my preferred way how to work on changes. I still love working in IntelliJ IDEA and I never wanted to adopt a different IDE. Now I see that others are jumping on the wagon. Today, there's cursor.com/cli.
Cursor CLI | Cursor - The AI Code Editor
Install and use the Cursor command-line interface to run AI coding workflows and automate tasks from your terminal.
cursor.com
August 8, 2025 at 11:47 AM
Working with agents in CLI is definitely my preferred way how to work on changes. I still love working in IntelliJ IDEA and I never wanted to adopt a different IDE. Now I see that others are jumping on the wagon. Today, there's cursor.com/cli.
Bar charts are hard. 😅
August 7, 2025 at 7:49 PM
Bar charts are hard. 😅
TIL: After 15 years with Git, I finally learned about worktree. Why? Because trying to run multiple Claude sessions simultaneously and cloning the repo 3 times felt like really bad idea. 🤦 😅
August 4, 2025 at 8:50 PM
TIL: After 15 years with Git, I finally learned about worktree. Why? Because trying to run multiple Claude sessions simultaneously and cloning the repo 3 times felt like really bad idea. 🤦 😅
I'm testing WisprFlow – wisprflow.ai for about a week now, and it's definitely a game changer for me. It helps me write prompts way more productively. Recognition works great, even in different languages. Definitely something I'll start paying for.
Wispr Flow | Effortless Voice Dictation
Flow makes writing quick and clear with seamless voice dictation. It is the fastest, smartest way to type with your voice.
wisprflow.ai
July 10, 2025 at 3:21 PM
I'm testing WisprFlow – wisprflow.ai for about a week now, and it's definitely a game changer for me. It helps me write prompts way more productively. Recognition works great, even in different languages. Definitely something I'll start paying for.
I'm testing o3 and o3-Pro with the same prompt to see if there's any extra value. So far, o3 seems good enough — the Pro responses don’t add much, even with the longer wait.
How it works for you?
How it works for you?
June 25, 2025 at 1:22 PM
I'm testing o3 and o3-Pro with the same prompt to see if there's any extra value. So far, o3 seems good enough — the Pro responses don’t add much, even with the longer wait.
How it works for you?
How it works for you?
I'm playing with Socratic-style prompt for learning I found in @mitsuhiko.at last article. So far I tested it with B-Tree and really enjoyed how it builds understanding step by step. Shame that switching to voice mode broke the flow in GPT.
gist.github.com/Dowwie/5a66c...
gist.github.com/Dowwie/5a66c...
Following is a prompt for effective learning with an LLM. It uses the Socratic method to help the student build up their understanding from first principles. Replace the topic in the prompt and then...
Following is a prompt for effective learning with an LLM. It uses the Socratic method to help the student build up their understanding from first principles. Replace the topic in the prompt and t...
gist.github.com
June 10, 2025 at 9:33 PM
I'm playing with Socratic-style prompt for learning I found in @mitsuhiko.at last article. So far I tested it with B-Tree and really enjoyed how it builds understanding step by step. Shame that switching to voice mode broke the flow in GPT.
gist.github.com/Dowwie/5a66c...
gist.github.com/Dowwie/5a66c...
Picked up some vibe-coding exercises around a topic that’s been on my mind for a while: being prepared for emergencies.
Before going further, I’d love to understand how others think about it, so put together a 1 minute survey – app.youform.com/forms/lr2toomb.
Thanks!
Before going further, I’d love to understand how others think about it, so put together a 1 minute survey – app.youform.com/forms/lr2toomb.
Thanks!
Emergency Preparedness at Home
Fill out my Youform
app.youform.com
June 8, 2025 at 7:52 PM
Picked up some vibe-coding exercises around a topic that’s been on my mind for a while: being prepared for emergencies.
Before going further, I’d love to understand how others think about it, so put together a 1 minute survey – app.youform.com/forms/lr2toomb.
Thanks!
Before going further, I’d love to understand how others think about it, so put together a 1 minute survey – app.youform.com/forms/lr2toomb.
Thanks!
Great video on the rise of the V60 and why it's so popular –
www.youtube.com/watch?v=BfNo.... Perfect companion for your morning brew.
www.youtube.com/watch?v=BfNo.... Perfect companion for your morning brew.
How We All Got Obsessed With A $6 Dripper
YouTube video by James Hoffmann
www.youtube.com
June 8, 2025 at 6:45 AM
Great video on the rise of the V60 and why it's so popular –
www.youtube.com/watch?v=BfNo.... Perfect companion for your morning brew.
www.youtube.com/watch?v=BfNo.... Perfect companion for your morning brew.
If you’re looking for a great game and haven’t played Slay the Spire yet, it’s insanely cheap right now on Steam and Humble Bundle.
I’ve got 100+ hours in it – total insta-buy at the current price.
I’ve got 100+ hours in it – total insta-buy at the current price.
June 7, 2025 at 5:53 PM
If you’re looking for a great game and haven’t played Slay the Spire yet, it’s insanely cheap right now on Steam and Humble Bundle.
I’ve got 100+ hours in it – total insta-buy at the current price.
I’ve got 100+ hours in it – total insta-buy at the current price.
After many years, Getpocket.com is shutting down. The good news, is that you can switch to Instapaper under 10 minutes.
If you’re using a feed reader, here’s how you can route Instapaper in – www.devontechnologies.com/blog/2023071...
If you’re using a feed reader, here’s how you can route Instapaper in – www.devontechnologies.com/blog/2023071...
DEVONtechnologies | How to Get Instapaper as RSS
DEVONtechnologies develops DEVONthink, DEVONagent, and other Mac and iOS apps for document and information management and web research.
www.devontechnologies.com
June 7, 2025 at 11:29 AM
After many years, Getpocket.com is shutting down. The good news, is that you can switch to Instapaper under 10 minutes.
If you’re using a feed reader, here’s how you can route Instapaper in – www.devontechnologies.com/blog/2023071...
If you’re using a feed reader, here’s how you can route Instapaper in – www.devontechnologies.com/blog/2023071...
Reposted by Jany Koščo
Katie Leonard (one of our eng managers) recently wrote a 🔥killer🔥 piece on the current obsession with cutting middle management in the name of "efficiency".
"Efficiency is not the same as effectiveness. An org running at 100% capacity is brittle, not agile."
www.linkedin.com/pulse/cuttin...
"Efficiency is not the same as effectiveness. An org running at 100% capacity is brittle, not agile."
www.linkedin.com/pulse/cuttin...
Cutting Middle Management Is Costing Your Capacity for Change
Over the last year, the tech industry has seen a wave of layoffs targeting middle management. Executives at companies like Meta, Shopify, and Amazon have framed this as a push toward efficiency.
www.linkedin.com
March 6, 2025 at 6:23 AM
Katie Leonard (one of our eng managers) recently wrote a 🔥killer🔥 piece on the current obsession with cutting middle management in the name of "efficiency".
"Efficiency is not the same as effectiveness. An org running at 100% capacity is brittle, not agile."
www.linkedin.com/pulse/cuttin...
"Efficiency is not the same as effectiveness. An org running at 100% capacity is brittle, not agile."
www.linkedin.com/pulse/cuttin...
I've been using GPT to replace many of my Google searches, even though it's not always the best fit. Today, I finally started using Perplexity. Curious to see how this will change my daily routines.
February 5, 2025 at 10:04 PM
I've been using GPT to replace many of my Google searches, even though it's not always the best fit. Today, I finally started using Perplexity. Curious to see how this will change my daily routines.
Did you ever accidentally DDoS your own service and wonder why it doesn't bounce back after you fix the root cause? Good retry logic can go bad. This deep dive shows why “just add backoff” often fails—and how to fix it. I love how they explore this in depth. medium.com/yandex/good-...
Good Retry, Bad Retry: An Incident Story
Sometimes, a seemingly simple and obvious solution can lead to a series of problems later on. This is especially true when adding retries.
medium.com
January 6, 2025 at 9:10 AM
Did you ever accidentally DDoS your own service and wonder why it doesn't bounce back after you fix the root cause? Good retry logic can go bad. This deep dive shows why “just add backoff” often fails—and how to fix it. I love how they explore this in depth. medium.com/yandex/good-...
This is a great high-level overview of what happened in the LLM world in 2024. It’s a huge and rapidly evolving field, so keeping up with all the news is almost impossible. I’ve been focusing mostly on coding models, so this has been especially helpful.
Here's my end-of-year review of things we learned out about LLMs in 2024 - we learned a LOT of things simonwillison.net/2024/Dec/31/...
Table of contents:
Table of contents:
January 3, 2025 at 6:08 AM
This is a great high-level overview of what happened in the LLM world in 2024. It’s a huge and rapidly evolving field, so keeping up with all the news is almost impossible. I’ve been focusing mostly on coding models, so this has been especially helpful.
The LEGO app used to be one of my son’s favorites, but it’s now so slow it’s unusable on my iPad Pro 12.9-inch. It’s a reminder that performance needs ongoing care — small degradations can quietly pile up until users are frustrated and give up. Back to PDFs for us 🥲
January 1, 2025 at 12:43 PM
The LEGO app used to be one of my son’s favorites, but it’s now so slow it’s unusable on my iPad Pro 12.9-inch. It’s a reminder that performance needs ongoing care — small degradations can quietly pile up until users are frustrated and give up. Back to PDFs for us 🥲