Lukáš Křečan
@lukas-krecan.bsky.social
SW engineer, maintaner of JsonUnit and ShedLock
Reposted by Lukáš Křečan
One analytical model shows that, as of November 5th, the dismantling of U.S.A.I.D. has already caused the deaths of 600,000 people, two-thirds of them children. https://newyorkermag.visitlink.me/jUzNSc
The Shutdown of U.S.A.I.D. Has Already Killed Hundreds of Thousands
The short documentary “Rovina’s Choice” tells the story of what goes when aid goes.
newyorkermag.visitlink.me
November 6, 2025 at 9:00 PM
One analytical model shows that, as of November 5th, the dismantling of U.S.A.I.D. has already caused the deaths of 600,000 people, two-thirds of them children. https://newyorkermag.visitlink.me/jUzNSc
Reposted by Lukáš Křečan
It's Halloween. So here's a story about the horror of replacing your developers with AI:
accu.org/journals/ove...
accu.org/journals/ove...
Judgment Day
What if AI takes your job? Teedy Deigh finds out.
accu.org
October 31, 2025 at 7:27 AM
It's Halloween. So here's a story about the horror of replacing your developers with AI:
accu.org/journals/ove...
accu.org/journals/ove...
Reposted by Lukáš Křečan
Reposted by Lukáš Křečan
Why does everyone keep calling it “The Epstein Ballroom?” Please stop repeating “The Epstein Ballroom” because it is not called “The Epstein Ballroom!” Don’t tell the news that it’s called “The Epstein Ballroom” and please don’t repost this!!!!!
October 22, 2025 at 10:33 PM
Why does everyone keep calling it “The Epstein Ballroom?” Please stop repeating “The Epstein Ballroom” because it is not called “The Epstein Ballroom!” Don’t tell the news that it’s called “The Epstein Ballroom” and please don’t repost this!!!!!
Reposted by Lukáš Křečan
Feel the AGI!
October 19, 2025 at 10:42 AM
Feel the AGI!
Reposted by Lukáš Křečan
Forward in a Caimh McDonnell book...
🤣😆
🤣😆
October 12, 2025 at 8:15 PM
Forward in a Caimh McDonnell book...
🤣😆
🤣😆
JsonUnit 5 has been released:
- Jackson 3 support
- Support for Spring 7 RestTestClient
- JSpecify nullability annotations
- Jackson 3 support
- Support for Spring 7 RestTestClient
- JSpecify nullability annotations
October 13, 2025 at 6:51 AM
JsonUnit 5 has been released:
- Jackson 3 support
- Support for Spring 7 RestTestClient
- JSpecify nullability annotations
- Jackson 3 support
- Support for Spring 7 RestTestClient
- JSpecify nullability annotations
Reposted by Lukáš Křečan
Fun factoid to start the day: regardless of the difficulty of the topic, the compute (and energy) overhead of an interaction with an LLM is a function of the total number of tokens (input + output) involved.
Bit of a clue, dontcha think?
Bit of a clue, dontcha think?
October 10, 2025 at 5:46 AM
Fun factoid to start the day: regardless of the difficulty of the topic, the compute (and energy) overhead of an interaction with an LLM is a function of the total number of tokens (input + output) involved.
Bit of a clue, dontcha think?
Bit of a clue, dontcha think?
Reposted by Lukáš Křečan
I'm surprised that there wasn't more noise around the license change of #Liquibase from Apache License 2.0 to Functional Source License (FSL) in Liquibase 5.0.0.
github.com/liquibase/li...
Is just nobody using it anymore? 😅
#Java #OSS #licensing
github.com/liquibase/li...
Is just nobody using it anymore? 😅
#Java #OSS #licensing
Release Liquibase v5.0.0 · liquibase/liquibase
Liquibase Community 5.0 is a major release
See the Liquibase Community 5.0 Release Notes for the complete set of release information.
⚠️ MAJOR CHANGES IN COMMUNITY AND COMMERCIAL DISTRIBUTIONS
Liqu...
github.com
October 5, 2025 at 8:56 PM
I'm surprised that there wasn't more noise around the license change of #Liquibase from Apache License 2.0 to Functional Source License (FSL) in Liquibase 5.0.0.
github.com/liquibase/li...
Is just nobody using it anymore? 😅
#Java #OSS #licensing
github.com/liquibase/li...
Is just nobody using it anymore? 😅
#Java #OSS #licensing
Reposted by Lukáš Křečan
Please join me in congratulating Woman on her appointment
Woman named as new Archbishop of Canterbury in historic first
Woman named as new Archbishop of Canterbury in historic first
Bishop of London Dame Sarah Mullally, a former nurse, has been named as the next Archbishop of Canterbury - the first time a woman has been appointed to the role in the Church of England's history.
news.sky.com
October 3, 2025 at 11:02 AM
Please join me in congratulating Woman on her appointment
Reposted by Lukáš Křečan
BBC news: "Denmark says 'professional actor' behind drone incursions over its airports"
Me: I bet AmDram societies all over Europe are breathing a sigh of relief.
...
Me: Oh, *that* kind of professional actor.
Me: I bet AmDram societies all over Europe are breathing a sigh of relief.
...
Me: Oh, *that* kind of professional actor.
September 25, 2025 at 2:24 PM
BBC news: "Denmark says 'professional actor' behind drone incursions over its airports"
Me: I bet AmDram societies all over Europe are breathing a sigh of relief.
...
Me: Oh, *that* kind of professional actor.
Me: I bet AmDram societies all over Europe are breathing a sigh of relief.
...
Me: Oh, *that* kind of professional actor.
Reposted by Lukáš Křečan
Reposted by Lukáš Křečan
Folks telling me that the larger context windows of LLMs means they "remember" more, I can only assume either didn't check the output or haven't actually tried it.
For scale, a 100 LOC source file I checked had > 1000 tokens.
For scale, a 100 LOC source file I checked had > 1000 tokens.
August 26, 2025 at 7:42 AM
Folks telling me that the larger context windows of LLMs means they "remember" more, I can only assume either didn't check the output or haven't actually tried it.
For scale, a 100 LOC source file I checked had > 1000 tokens.
For scale, a 100 LOC source file I checked had > 1000 tokens.
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...
Reposted by Lukáš Křečan
Among the books in this year’s Software Architecture humble bundle:
@andrewhl.bsky.social : Facilitating Software Architecture
and
@dianamontalion.com : Learning Systems Thinking
Software Architect Books from Humble Bundle
www.humblebundle.com/books/softwa...
@andrewhl.bsky.social : Facilitating Software Architecture
and
@dianamontalion.com : Learning Systems Thinking
Software Architect Books from Humble Bundle
www.humblebundle.com/books/softwa...
Humble Tech Book Bundle: Software Architecture 2025 by O'Reilly
Pay what you want for the latest Humble Tech Bundle: Software Architecture 2025 and help support Code for America with your purchase!
www.humblebundle.com
August 24, 2025 at 4:26 AM
Among the books in this year’s Software Architecture humble bundle:
@andrewhl.bsky.social : Facilitating Software Architecture
and
@dianamontalion.com : Learning Systems Thinking
Software Architect Books from Humble Bundle
www.humblebundle.com/books/softwa...
@andrewhl.bsky.social : Facilitating Software Architecture
and
@dianamontalion.com : Learning Systems Thinking
Software Architect Books from Humble Bundle
www.humblebundle.com/books/softwa...
Reposted by Lukáš Křečan
Reposted by Lukáš Křečan
Reposted by Lukáš Křečan
Five Practical Tips for Any Team to Reduce Risks, Increase Agility, and Deliver Value
www.jrothman.com/mpd/2025/08/...
#AgilePrinciples #Collaboration
www.jrothman.com/mpd/2025/08/...
#AgilePrinciples #Collaboration
Five Practical Tips for Any Team to Reduce Risks, Increase Agility, and Deliver Value - Johanna Rothman
A colleague recently asked me how a team can deliver something useful in the next four to five weeks. “That's all? Just four to five weeks?” I asked. Yes, that was all the time they had remaining. The...
www.jrothman.com
August 5, 2025 at 7:23 PM
Five Practical Tips for Any Team to Reduce Risks, Increase Agility, and Deliver Value
www.jrothman.com/mpd/2025/08/...
#AgilePrinciples #Collaboration
www.jrothman.com/mpd/2025/08/...
#AgilePrinciples #Collaboration
Reposted by Lukáš Křečan
Every time Gradle posts a major release plugins get borked.
Every. Single. Time.
Sometimes even on minor, and patch releases. All just to shave a few nano seconds from build times.
I wonder why I even bother with this broken build tool 🙄😓😡
Every. Single. Time.
Sometimes even on minor, and patch releases. All just to shave a few nano seconds from build times.
I wonder why I even bother with this broken build tool 🙄😓😡
August 2, 2025 at 9:12 AM
Every time Gradle posts a major release plugins get borked.
Every. Single. Time.
Sometimes even on minor, and patch releases. All just to shave a few nano seconds from build times.
I wonder why I even bother with this broken build tool 🙄😓😡
Every. Single. Time.
Sometimes even on minor, and patch releases. All just to shave a few nano seconds from build times.
I wonder why I even bother with this broken build tool 🙄😓😡
Reposted by Lukáš Křečan
🍃 #Spring Framework 7.0 will provide built-in support for pausing & restarting unused application contexts between test classes.
This ensures that background processes in the context are not actively running while the context is not used by tests. 👍🏻
github.com/spring-proje...
This ensures that background processes in the context are not actively running while the context is not used by tests. 👍🏻
github.com/spring-proje...
Pause unused application contexts in the TestContext framework · spring-projects/spring-framework@dbe89ab
Since the introduction of the Spring TestContext Framework in 2007,
application contexts have always been stored in the context cache in a
"running" state. However, leaving a context runn...
github.com
July 15, 2025 at 9:50 AM
🍃 #Spring Framework 7.0 will provide built-in support for pausing & restarting unused application contexts between test classes.
This ensures that background processes in the context are not actively running while the context is not used by tests. 👍🏻
github.com/spring-proje...
This ensures that background processes in the context are not actively running while the context is not used by tests. 👍🏻
github.com/spring-proje...
Reposted by Lukáš Křečan
“$110M a year on AWS? I could do it for half!”
Bro, your last infra project was making a cron job email you weather updates.
Sit down.
www.duckbillgroup.com/blog/figmas-...
Bro, your last infra project was making a cron job email you weather updates.
Sit down.
www.duckbillgroup.com/blog/figmas-...
Figma's $300k Daily AWS Bill Isn't the Scandal You Think It Is
Well, the internet did what the internet does best this week: it collectively lost its mind over a number in an S-1 filing. Figma disclosed they signed a ~$550 million contract with AWS, someone used ...
www.duckbillgroup.com
July 10, 2025 at 11:05 PM
“$110M a year on AWS? I could do it for half!”
Bro, your last infra project was making a cron job email you weather updates.
Sit down.
www.duckbillgroup.com/blog/figmas-...
Bro, your last infra project was making a cron job email you weather updates.
Sit down.
www.duckbillgroup.com/blog/figmas-...
Reposted by Lukáš Křečan
New post up, with a bunch of thoughts on what drives me personally, and my own 40-year career (h/t @lethain.com).
I have a pretty unusual life story. But one of the reasons I love the tech industry so much is how common unusual stories like mine have historically been.
charity.wtf/2025/07/09/t...
I have a pretty unusual life story. But one of the reasons I love the tech industry so much is how common unusual stories like mine have historically been.
charity.wtf/2025/07/09/t...
Thoughts on Motivation and My 40-Year Career
I’ve never published an essay quite like this. I’ve written about my life before, reams of stuff actually, because that’s how I process what I think, but never for public consumption. I’ve been pus…
charity.wtf
July 9, 2025 at 9:31 PM
New post up, with a bunch of thoughts on what drives me personally, and my own 40-year career (h/t @lethain.com).
I have a pretty unusual life story. But one of the reasons I love the tech industry so much is how common unusual stories like mine have historically been.
charity.wtf/2025/07/09/t...
I have a pretty unusual life story. But one of the reasons I love the tech industry so much is how common unusual stories like mine have historically been.
charity.wtf/2025/07/09/t...
Reposted by Lukáš Křečan
I told you we’d be back
June 12, 2025 at 4:15 PM
I told you we’d be back
Reposted by Lukáš Křečan
