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Workers Cache

https://blog.cloudflare.com/workers-cache/
58•ilreb•49m ago•9 comments

Regression to the Mean: on LLMs and the quiet death of the new

https://rruxandra.github.io/regression-to-the-mean.html
26•rruxandra_l•31m ago•16 comments

Real-time map of Great Britain's rail network

https://www.map.signalbox.io
240•scrlk•4h ago•97 comments

Anthropic's Method to Losing Goodwill in a Few Easy Steps

https://raheeljunaid.com/blog/anthropics-method-to-losing-goodwill-in-a-few-easy-steps/
42•raheelrjunaid•1h ago•9 comments

Road to Elm 1.0

https://elm-lang.org/news/faster-builds
112•wolfadex•2h ago•52 comments

Bryan Johnson: I have an autoimmune disease. My stomach is eating itself

https://twitter.com/bryan_johnson/status/2072069730517860385
25•danso•45m ago•12 comments

Why low-latency Java still requires discipline?

https://chronicle.software/insights/blogs/why-low-latency-java-still-requires-discipline
8•theanonymousone•48m ago•0 comments

Show HN: Scan your AI agents for dangerous capabilities

https://github.com/makerchecker/MakerChecker
11•smashini•34m ago•4 comments

Study: ultra-black coating could reduce satellite light pollution

https://www.surrey.ac.uk/news/astrophysicists-show-how-worlds-darkest-coating-could-protect-night...
21•giuliomagnifico•2h ago•31 comments

The AI Marketing Backlash: Why 'AI-First' Brands Are Starting to Fall Flat

https://www.breef.com/breefingroom/articles/the-ai-marketing-backlash-why-ai-first-brands-are-sta...
35•hasudon7171•1h ago•18 comments

Fable 5 On Vending-Bench: Misbehaving, With Plausible Deniability

https://andonlabs.com/blog/fable5-vending-bench
13•optimalsolver•1h ago•0 comments

GPT-5.6 Sol Ultra will be in Codex

https://twitter.com/thsottiaux/status/2073933490513752151
353•mfiguiere•12h ago•301 comments

Show HN: Pet Reminder – A macOS reminder app with a desktop pet

https://reminder.w3cub.com/
6•terryXyz•50m ago•1 comments

Aluminum Foil

https://dernocua.github.io/notes/aluminum-foil.html
4•firephox•23m ago•0 comments

Introduction to Genomics for Engineers

https://learngenomics.dev/docs/biological-foundations/cells-genomes-dna-chromosomes/
101•yreg•4d ago•12 comments

Real time map of France's rail network

https://carto.tchoo.net/
3•appreciatorBus•31m ago•0 comments

The Fear of Dying Before You Become Yourself

https://www.dailicle.com/read/the-fear-of-dying-before-you-become-yourself
4•dotcoma•35m ago•0 comments

Has_not_been_viewed_much

https://iamwillwang.com/notes/has-not-been-viewed-much/
378•wxw•14h ago•101 comments

Building relationships with customers through support didn't turn out as hoped

https://www.uncommonapps.nyc/p/castro-podcasts-things-i-got-wrong-support
226•dabluck•11h ago•144 comments

When 2+2=5

https://arstechnica.com/security/2026/06/ai-browsers-can-be-lulled-into-a-dream-world-where-guard...
8•noashavit•3d ago•0 comments

C programmers commit fresh crimes against readability

https://www.theregister.com/offbeat/2026/07/05/c-programmers-commit-fresh-crimes-against-readabil...
64•Bender•2h ago•5 comments

The Complete Homemade Juggling Beanbag Guide

https://www.joshuaclifton.com/juggle/
34•mrauha•4d ago•5 comments

X402, a static blog monetization excercise

https://shtein.me/posts/x402-poc/
14•morty28•3h ago•9 comments

OpenPrinter

https://www.opentools.studio/
1002•bouh•16h ago•240 comments

Does code cleanliness affect coding agents? A controlled minimal-pair study

https://arxiv.org/abs/2605.20049
162•softwaredoug•14h ago•81 comments

Show HN: Paint the Earth on a live, interactive globe (collaborative art.)

https://earth.tattoo
11•earth-tattoo•3h ago•8 comments

My quest to see all of Tetris

https://antithesis.com/blog/2026/tetris-quest/
38•wwilson•3d ago•9 comments

How the U.S. Engineered Its Sovereignty

https://spectrum.ieee.org/us-engineered-sovereignty
44•rbanffy•3h ago•37 comments

Show HN: Homegames. An open-source game platform I've been making for 8 years

https://homegames.io
199•homegamesjoseph•16h ago•52 comments

Zuckerberg says AI agent development going slower than expected

https://www.reuters.com/business/zuckerberg-says-ai-agent-development-going-slower-than-expected-...
296•cwwc•3d ago•514 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•1y ago

Comments

stevoski•1y 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•1y 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•1y 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_•1y ago
Spotbugs or checkstyle etc... would catch these. What does AI add here?
xyst•1y 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•1y 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•1y 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•1y 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•1y 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•1y ago
stupid af
Traubenfuchs•1y 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•1y 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•1y ago
Can the QA team? How does the dev/staging environment help writing less buggy code?
rad_gruchalski•1y ago
But can you leetcode heh.
TYMorningCoffee•1y 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.