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AWS multiple services outage in us-east-1

https://health.aws.amazon.com/health/status?ts=20251020
1821•kondro•23h ago•1854 comments

A laser pointer at 2B FPS [video]

https://www.youtube.com/watch?v=o4TdHrMi6do
334•thunderbong•1d ago•66 comments

Alibaba Cloud says it cut Nvidia AI GPU use by 82% with new pooling system

https://www.tomshardware.com/tech-industry/semiconductors/alibaba-says-new-pooling-system-cut-nvi...
394•hd4•17h ago•253 comments

Production RAG: what I learned from processing 5M+ documents

https://blog.abdellatif.io/production-rag-processing-5m-documents
355•tifa2up•14h ago•86 comments

60k kids have avoided peanut allergies due to 2015 advice, study finds

https://www.cbsnews.com/news/peanut-allergies-60000-kids-avoided-2015-advice/
83•zdw•2h ago•51 comments

BERT is just a single text diffusion step

https://nathan.rs/posts/roberta-diffusion/
377•nathan-barry•15h ago•93 comments

My trick for getting consistent classification from LLMs

https://verdik.substack.com/p/how-to-get-consistent-classification
154•frenchmajesty•1w ago•33 comments

Claude Code on the web

https://www.anthropic.com/news/claude-code-on-the-web
438•adocomplete•12h ago•272 comments

When Compiler Optimizations Hurt Performance

https://nemanjatrifunovic.substack.com/p/when-compiler-optimizations-hurt
17•rbanffy•6d ago•0 comments

Show HN: I'm making a detective game built on Wikipedia

https://detective.wiki/
38•jasonsmiles•3d ago•9 comments

The scariest "user support" email I've received

https://www.devas.life/the-scariest-user-support-email-ive-ever-received/
221•hervic•5d ago•144 comments

Show HN: I created a cross-platform GUI for the JJ VCS (Git compatible)

https://judojj.com
98•bitpatch•14h ago•20 comments

Today is when the Amazon brain drain sent AWS down the spout

https://www.theregister.com/2025/10/20/aws_outage_amazon_brain_drain_corey_quinn/
523•raw_anon_1111•9h ago•236 comments

I made a small LED panel

https://www.stavros.io/posts/really-small-led-panel/
46•Brajeshwar•1w ago•10 comments

Building a CMS without programming experience

https://www.vibediary.dev/essays/cms
7•stopachka•1w ago•0 comments

ChkTag: x86 Memory Safety

https://community.intel.com/t5/Blogs/Tech-Innovation/open-intel/ChkTag-x86-Memory-Safety/post/172...
227•ashvardanian•6d ago•108 comments

A magnetic field orientation that changes the fundamental design of motors

https://www.paranetics.com/copy-of-home
35•dillonshook•5d ago•5 comments

Results from blood test for 50 cancers

https://www.bbc.com/news/articles/c205g21n1zzo
80•dabinat•3d ago•43 comments

How to stop Linux threads cleanly

https://mazzo.li/posts/stopping-linux-threads.html
195•signa11•5d ago•70 comments

x86-64 Playground – An online assembly editor and GDB-like debugger

https://x64.halb.it/
133•modinfo•12h ago•11 comments

Optical diffraction patterns made with a MOPA laser engraving machine [video]

https://www.youtube.com/watch?v=RsGHr7dXLuI
127•emsign•6d ago•23 comments

Space Elevator

https://neal.fun/space-elevator/
1550•kaonwarb•1d ago•362 comments

Old Computer Challenge – Modern Web for the ZX Spectrum

https://0x00.cl/blog/2025/occ-2025/
31•0x00cl•6h ago•5 comments

TernFS – an exabyte scale, multi-region distributed filesystem

https://www.xtxmarkets.com/tech/2025-ternfs/#posix-shaped
111•kirlev•12h ago•17 comments

Code from MIT's 1986 SICP video lectures

https://github.com/felipap/sicp-code
102•felipap•3d ago•14 comments

The longest baseball game took 33 innings to win

https://www.mlb.com/news/the-longest-professional-baseball-game-ever-played
61•mooreds•5d ago•63 comments

DeepSeek OCR

https://github.com/deepseek-ai/DeepSeek-OCR
898•pierre•1d ago•224 comments

Postman which I thought worked locally on my computer, is down

https://status.postman.com
399•helloguillecl•14h ago•184 comments

Servo v0.0.1

https://github.com/servo/servo
504•undeveloper•17h ago•161 comments

Show HN: Playwright Skill for Claude Code – Less context than playwright-MCP

https://github.com/lackeyjb/playwright-skill
149•syntax-sherlock•18h ago•41 comments
Open in hackernews

Fixrleak: Fixing Java Resource Leaks with GenAI

https://www.uber.com/blog/fixrleak-fixing-java-resource-leaks-with-genai/
17•carimura•5mo ago

Comments

stevoski•5mo ago
> “Resource leaks, where resources like files, database connections, or streams aren’t properly released after use, are a persistent issue in Java applications”

This was true maybe back in 2005. Java has had try-with-resources for a loooong time. As I see it this has been the dominant idiom for ages, for handling resources that might leak.

okr•5mo ago
People tend to forget. Stream-API is a good candidate, that people like to not consider for leakage. If you don't own your stream, if you do not definitly know, that your stream comes from a collection, then ya better close it with a try-block.
bob778•5mo ago
How much effort was spent automating this to fix 112 instances across Uber’s code base? I assume code reviews would catch any new issues so this seems like overkill for a small one-off task?
hawk_•5mo ago
Spotbugs or checkstyle etc... would catch these. What does AI add here?
xyst•5mo ago
It gives marketing team at Uber to say "wE uSe AI hErE!!1". C-levels approve since anything AI gets a nice pump.

Engineering wise. This adds nothing. It’s an absolute waste of compute and energy to run this through LLMs

sigotirandolas•5mo ago
> This analysis ensures that FixrLeak skips functions where resources are passed as parameters, returned, or stored in fields, as these resources often outlive the function’s scope.

> FixrLeak delivers precise, reliable fixes while leaving more complex cases for advanced analysis at the caller level.

In other words, this will only fix trivial leaks, which are best seen as a language design issue and can be fixed by RAII, reference counting, etc.

It won't fix the more insidious leaks like `UNBOUNDED_QUEUE.add(item)` that are more likely to pass through code review in the first place.

xyst•5mo ago
Using AI when a static scanner like SonarQube easily picks up these types of resource leaks, especially in Java.

Peak waste.

What’s next?

"Get rid of your GitHub dependabot alerts and replace it with my shitty ChatGPT wrapper”

rvz•5mo ago
> Using AI when a static scanner like SonarQube easily picks up these types of resource leaks, especially in Java.

Exactly.

It's very disappointing to see that Uber engineers would rather trust an LLM to that claims to spot these issues when a battle-tested scanner such as SonarQube would have caught this in the first place.

The LLM hype-train is almost just as bad as the JavaScript hype train in the 2010s where some of the worst technologies are used on everything.

rvz•5mo ago
Why exactly do you need LLMs for this when efficient alternatives like SonarQube or checkstyle already do this without the expensive waste LLMs create?

This adds little to no technical advantage over existing solutions what so ever for this particular use case.

yahoozoo•5mo ago
stupid af
Traubenfuchs•5mo ago
So you tell me those 200-600k software engineers that can easily solve leetcode hard are so incompetent they missed using try-with-resources at such scale, they needed to introduce new AI tooling to fix it?

Hey Uber, I am from the EU, I usually can‘t even solve leetcode medium but I will write you scalable, spotless Java for a third of the salary.

Our industry and its economics are a joke.

hello_moto•5mo ago
So you write bug-free scalable code 100% in any jobs you ever worked for?

I guess we don’t need QA and Dev/Staging environment

rad_gruchalski•5mo ago
Can the QA team? How does the dev/staging environment help writing less buggy code?
rad_gruchalski•5mo ago
But can you leetcode heh.
TYMorningCoffee•5mo ago
A lot of commenters point out that there already are many established static checkers that do this. That is not what Uber attempts here.

Uber is not proposing a static checker. They even use sonar qube in their architecture. They propose using an LLM to resolve the leak detected by sonar qube.