Lari Hotari
@lhotari.bsky.social
OSS contributor https://github.com/lhotari, Distributed Systems Engineer. Principal Engineer at StreamNative. Apache Pulsar PMC member. Apache Software Foundation member. 🇫🇮🇨🇦🇺🇦
Reposted by Lari Hotari
"This is a different way of thinking, different values, a different view of the world and of their own culture. We are on entirely different pages of civilization with them, on different pages even of our basic understanding of what life is," "Fidel" said.
📹: Unmanned Systems Forces
📹: Unmanned Systems Forces
September 8, 2025 at 1:05 PM
"This is a different way of thinking, different values, a different view of the world and of their own culture. We are on entirely different pages of civilization with them, on different pages even of our basic understanding of what life is," "Fidel" said.
📹: Unmanned Systems Forces
📹: Unmanned Systems Forces
Reposted by Lari Hotari
"They [Russians] have no concept that your freedom ends where another person's freedom begins." -"Fidel", Founder of the 14th Separate Unmanned Aerial Vehicle Regiment
The Ukrainian Defender emphasized that they plan operations to avoid losses, whereas the Russians do the opposite.
The Ukrainian Defender emphasized that they plan operations to avoid losses, whereas the Russians do the opposite.
September 8, 2025 at 1:05 PM
"They [Russians] have no concept that your freedom ends where another person's freedom begins." -"Fidel", Founder of the 14th Separate Unmanned Aerial Vehicle Regiment
The Ukrainian Defender emphasized that they plan operations to avoid losses, whereas the Russians do the opposite.
The Ukrainian Defender emphasized that they plan operations to avoid losses, whereas the Russians do the opposite.
Reposted by Lari Hotari
While the world seeks a path to peace, Russia responds with missiles.
The overnight attack on Kyiv shows a deliberate choice to escalate and mock the peace efforts.
Russia must stop the killing and negotiate.
The overnight attack on Kyiv shows a deliberate choice to escalate and mock the peace efforts.
Russia must stop the killing and negotiate.
August 28, 2025 at 6:49 AM
While the world seeks a path to peace, Russia responds with missiles.
The overnight attack on Kyiv shows a deliberate choice to escalate and mock the peace efforts.
Russia must stop the killing and negotiate.
The overnight attack on Kyiv shows a deliberate choice to escalate and mock the peace efforts.
Russia must stop the killing and negotiate.
Reposted by Lari Hotari
I've decided to translate for you a post from the Russian Telegram channel "Nezygar" about the current state of Russian refineries and fuel market⤵️:
August 23, 2025 at 11:22 AM
I've decided to translate for you a post from the Russian Telegram channel "Nezygar" about the current state of Russian refineries and fuel market⤵️:
Reposted by Lari Hotari
Russia's Fuel Crisis Will Change the World
YouTube video by Jay in Kyiv
youtu.be
August 24, 2025 at 2:59 AM
Reposted by Lari Hotari
🇫🇷 "Putin is a predator, an ogre at our gates", – Macron
Putin has rarely kept his commitments. He has been a power of destabilization, seeking to revise borders to extend his power.
Russia has lastingly become a destabilizing force and a potential threat. We must not be naive.
Putin has rarely kept his commitments. He has been a power of destabilization, seeking to revise borders to extend his power.
Russia has lastingly become a destabilizing force and a potential threat. We must not be naive.
August 20, 2025 at 6:58 AM
🇫🇷 "Putin is a predator, an ogre at our gates", – Macron
Putin has rarely kept his commitments. He has been a power of destabilization, seeking to revise borders to extend his power.
Russia has lastingly become a destabilizing force and a potential threat. We must not be naive.
Putin has rarely kept his commitments. He has been a power of destabilization, seeking to revise borders to extend his power.
Russia has lastingly become a destabilizing force and a potential threat. We must not be naive.
Reposted by Lari Hotari
Hi All, Just sent out this post about today. August 18 could be one of the most important days in modern European history. Decisions will be made and leaders will stand up or not. This cannot be avoided now--and what is decided will determine a great deal. open.substack.com/pub/phillips...
August 18--A Historic Day?
Will Europe's Leaders Rise To The Challenge?
open.substack.com
August 18, 2025 at 6:20 AM
Hi All, Just sent out this post about today. August 18 could be one of the most important days in modern European history. Decisions will be made and leaders will stand up or not. This cannot be avoided now--and what is decided will determine a great deal. open.substack.com/pub/phillips...
Reposted by Lari Hotari
With vibe coding tools going mainstream, it’s entirely predictable we’ll keep seeing many of these cases.
Eventually, the “better” vibe coding apps will patch most of these (not all!). Till then we’ll see all information leaks, security issues and trivial to “hack” such sites
Eventually, the “better” vibe coding apps will patch most of these (not all!). Till then we’ll see all information leaks, security issues and trivial to “hack” such sites
July 20, 2025 at 8:20 AM
With vibe coding tools going mainstream, it’s entirely predictable we’ll keep seeing many of these cases.
Eventually, the “better” vibe coding apps will patch most of these (not all!). Till then we’ll see all information leaks, security issues and trivial to “hack” such sites
Eventually, the “better” vibe coding apps will patch most of these (not all!). Till then we’ll see all information leaks, security issues and trivial to “hack” such sites
Reposted by Lari Hotari
An actual blog post: www.cottongeeks.com/articles/202...
Fun with uv and PEP 723
www.cottongeeks.com
June 24, 2025 at 9:17 AM
An actual blog post: www.cottongeeks.com/articles/202...
"Software Is About Promises", blog post by Bram Adams: www.bramadams.dev/software-is-...
"What are you promising your users? And how is this promise testable?" - Great questions to ask yourself when building software solutions.
"What are you promising your users? And how is this promise testable?" - Great questions to ask yourself when building software solutions.
Software is About Promises
(to JS programmers: not that kind)
www.bramadams.dev
June 9, 2025 at 12:40 PM
"Software Is About Promises", blog post by Bram Adams: www.bramadams.dev/software-is-...
"What are you promising your users? And how is this promise testable?" - Great questions to ask yourself when building software solutions.
"What are you promising your users? And how is this promise testable?" - Great questions to ask yourself when building software solutions.
Reposted by Lari Hotari
“Not just Putin — Russia.”
In this powerful statement, Garry Kasparov
@garrykasparov.bsky.social calls out the collective responsibility of Russian society for the war & genocide in #Ukraine.
"This is a fascist dictatorship —&crucially,it’s supported by the overwhelming majority of the population"
In this powerful statement, Garry Kasparov
@garrykasparov.bsky.social calls out the collective responsibility of Russian society for the war & genocide in #Ukraine.
"This is a fascist dictatorship —&crucially,it’s supported by the overwhelming majority of the population"
June 7, 2025 at 5:30 PM
“Not just Putin — Russia.”
In this powerful statement, Garry Kasparov
@garrykasparov.bsky.social calls out the collective responsibility of Russian society for the war & genocide in #Ukraine.
"This is a fascist dictatorship —&crucially,it’s supported by the overwhelming majority of the population"
In this powerful statement, Garry Kasparov
@garrykasparov.bsky.social calls out the collective responsibility of Russian society for the war & genocide in #Ukraine.
"This is a fascist dictatorship —&crucially,it’s supported by the overwhelming majority of the population"
Reposted by Lari Hotari
Using LLMs for "smart duck" talk about coding problems, I also do that all the time.
Human coders are still better than LLMs: antirez.com/news/153
Human coders are still better than LLMs - <antirez>
antirez.com
May 29, 2025 at 7:47 PM
Using LLMs for "smart duck" talk about coding problems, I also do that all the time.
The URL used had the path /management/heapdump, possibly a Spring Boot app. I never imagined that my contribution github.com/spring-proje... in 2016 would result in this disaster 9 years later. In Spring Boot, you should set management.server.port and never expose management endpoints externally.
May 20, 2025 at 2:11 PM
The URL used had the path /management/heapdump, possibly a Spring Boot app. I never imagined that my contribution github.com/spring-proje... in 2016 would result in this disaster 9 years later. In Spring Boot, you should set management.server.port and never expose management endpoints externally.
Reposted by Lari Hotari
DDoSecrets publishes 410 GB of heap dumps, hacked from TeleMessage's archive server micahflee.com/ddosecrets-p...
May 19, 2025 at 4:54 PM
DDoSecrets publishes 410 GB of heap dumps, hacked from TeleMessage's archive server micahflee.com/ddosecrets-p...
Reposted by Lari Hotari
Eighty years ago, enemies laid down their arms.
Since then, we, Europeans, have built something extraordinary: a Union of peace, democracy, and solidarity. An anchor of stability.
Our Union was born as a peace project, and it remains one today.
Since then, we, Europeans, have built something extraordinary: a Union of peace, democracy, and solidarity. An anchor of stability.
Our Union was born as a peace project, and it remains one today.
May 8, 2025 at 7:33 AM
Eighty years ago, enemies laid down their arms.
Since then, we, Europeans, have built something extraordinary: a Union of peace, democracy, and solidarity. An anchor of stability.
Our Union was born as a peace project, and it remains one today.
Since then, we, Europeans, have built something extraordinary: a Union of peace, democracy, and solidarity. An anchor of stability.
Our Union was born as a peace project, and it remains one today.
Reposted by Lari Hotari
Tomorrow (Thursday) you can join me, Tim O'Reilly, Addy Osmani, Kent Beck, Chip Huyen, Birgitta Boeckeler, Jay Parikh and several other tech professionals giving our take on how AI will change software engineering - but why software engineers won't be "replaced" by AI or "AI sw engineers."
(cont'd)
(cont'd)
May 7, 2025 at 12:22 PM
Tomorrow (Thursday) you can join me, Tim O'Reilly, Addy Osmani, Kent Beck, Chip Huyen, Birgitta Boeckeler, Jay Parikh and several other tech professionals giving our take on how AI will change software engineering - but why software engineers won't be "replaced" by AI or "AI sw engineers."
(cont'd)
(cont'd)
Reposted by Lari Hotari
New blog post on the mental model I've used when working through complex or confusing papers on transactional systems.
transactional.blog/b...
transactional.blog/b...
April 17, 2025 at 6:36 PM
New blog post on the mental model I've used when working through complex or confusing papers on transactional systems.
transactional.blog/b...
transactional.blog/b...
Reposted by Lari Hotari
My story breaking this news exclusively was 7K+ words and had almost all of this in it, and more:
www.npr.org/2025/04/15/n...
www.npr.org/2025/04/15/n...
April 18, 2025 at 1:58 AM
My story breaking this news exclusively was 7K+ words and had almost all of this in it, and more:
www.npr.org/2025/04/15/n...
www.npr.org/2025/04/15/n...
Reposted by Lari Hotari
New blogpost published! "So, You Want to Learn More About Deterministic Simulation Testing?"
So, You Want to Learn More About Deterministic Simulation Testing?
A curated collection of resources about deterministic simulation testing for distributed systems.
pierrezemb.fr
April 11, 2025 at 2:51 PM
New blogpost published! "So, You Want to Learn More About Deterministic Simulation Testing?"
Gave a guest lecture today at Aalto University on 'Autoscaling challenges of multi-tenant SaaS platforms.'
Shared insights on capacity management, the dreaded 'noisy neighbor' problem, and workload aggregation. Simulation and slides: github.com/lhotari/workload-aggregation-visualizer
Shared insights on capacity management, the dreaded 'noisy neighbor' problem, and workload aggregation. Simulation and slides: github.com/lhotari/workload-aggregation-visualizer
GitHub - lhotari/workload-aggregation-visualizer: A visualization tool demonstrating the effects of workload aggregation on system load
A visualization tool demonstrating the effects of workload aggregation on system load - lhotari/workload-aggregation-visualizer
github.com
March 18, 2025 at 2:18 PM
Gave a guest lecture today at Aalto University on 'Autoscaling challenges of multi-tenant SaaS platforms.'
Shared insights on capacity management, the dreaded 'noisy neighbor' problem, and workload aggregation. Simulation and slides: github.com/lhotari/workload-aggregation-visualizer
Shared insights on capacity management, the dreaded 'noisy neighbor' problem, and workload aggregation. Simulation and slides: github.com/lhotari/workload-aggregation-visualizer
Reposted by Lari Hotari
Psychological safety is NOT about lack of disagreement.
Psychological safety REQUIRES:
* disagreement and debate
* setting standards for behavior and performance, and enforcing them
* telling people things they don't want to hear
* courage, from the bottom up
* humility, from the top down
Psychological safety REQUIRES:
* disagreement and debate
* setting standards for behavior and performance, and enforcing them
* telling people things they don't want to hear
* courage, from the bottom up
* humility, from the top down
Controversial take: teams that never argue are often the most dysfunctional ones.
Here's why your team should be fighting more.
terriblesoftware.org/2025/03/12/w...
Here's why your team should be fighting more.
terriblesoftware.org/2025/03/12/w...
Why Your ‘Harmonious’ Team Is Actually Failing
Teams often confuse psychological safety with everyone getting along perfectly. I see leaders bragging about teams where nobody ever raises their voice, where meetings wrap up with everyone nodding…
terriblesoftware.org
March 13, 2025 at 11:07 PM
Psychological safety is NOT about lack of disagreement.
Psychological safety REQUIRES:
* disagreement and debate
* setting standards for behavior and performance, and enforcing them
* telling people things they don't want to hear
* courage, from the bottom up
* humility, from the top down
Psychological safety REQUIRES:
* disagreement and debate
* setting standards for behavior and performance, and enforcing them
* telling people things they don't want to hear
* courage, from the bottom up
* humility, from the top down
Reposted by Lari Hotari
Worth noting that all these American business leaders who write whole books about courage and leadership are real quiet right now as this madness unfolds. They don’t dare to say boo. Silence of the lambs.
March 5, 2025 at 12:57 PM
Worth noting that all these American business leaders who write whole books about courage and leadership are real quiet right now as this madness unfolds. They don’t dare to say boo. Silence of the lambs.
Reposted by Lari Hotari
I stand with Ukraine
Proud to live in a country (the Netherlands) that unconditionally supports Ukraine.
Europe needs to re-arm, to support Ukraine and defend itself and democracy.
Ukraine is the one defending Europe from Russian aggression. Ukraine should be part of the EU.
Slava Ukraini 🇺🇦
Proud to live in a country (the Netherlands) that unconditionally supports Ukraine.
Europe needs to re-arm, to support Ukraine and defend itself and democracy.
Ukraine is the one defending Europe from Russian aggression. Ukraine should be part of the EU.
Slava Ukraini 🇺🇦
March 2, 2025 at 12:51 PM
I stand with Ukraine
Proud to live in a country (the Netherlands) that unconditionally supports Ukraine.
Europe needs to re-arm, to support Ukraine and defend itself and democracy.
Ukraine is the one defending Europe from Russian aggression. Ukraine should be part of the EU.
Slava Ukraini 🇺🇦
Proud to live in a country (the Netherlands) that unconditionally supports Ukraine.
Europe needs to re-arm, to support Ukraine and defend itself and democracy.
Ukraine is the one defending Europe from Russian aggression. Ukraine should be part of the EU.
Slava Ukraini 🇺🇦