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The Agentic AI Handbook: Production-Ready Patterns

https://www.nibzard.com/agentic-handbook
145•SouravInsights•3h ago•56 comments

Anthropic's original take home assignment open sourced

https://github.com/anthropics/original_performance_takehome
327•myahio•7h ago•157 comments

A 26,000-year astronomical monument hidden in plain sight (2019)

https://longnow.org/ideas/the-26000-year-astronomical-monument-hidden-in-plain-sight/
479•mkmk•16h ago•92 comments

The percentage of Show HN posts is increasing, but their scores are decreasing

https://snubi.net/posts/Show-HN/
30•plastic041•3h ago•19 comments

Can you slim macOS down?

https://eclecticlight.co/2026/01/21/can-you-slim-macos-down/
25•ingve•2h ago•27 comments

cURL removes bug bounties

https://etn.se/index.php/nyheter/72808-curl-removes-bug-bounties.html
219•jnord•4h ago•120 comments

200 MB RAM FreeBSD Desktop

https://vermaden.wordpress.com/2026/01/18/200-mb-ram-freebsd-desktop/
83•vermaden•3d ago•62 comments

Libbbf: Bound Book Format, A high-performance container for comics and manga

https://github.com/ef1500/libbbf
63•zdw•6h ago•29 comments

RSS.Social – the latest and best from small sites across the web

https://rss.social/
70•Curiositry•8h ago•12 comments

The challenges of soft delete

https://atlas9.dev/blog/soft-delete.html
165•buchanae•13h ago•96 comments

Show HN: Mastra 1.0, open-source JavaScript agent framework from the Gatsby devs

https://github.com/mastra-ai/mastra
165•calcsam•17h ago•53 comments

Director Gore Verbinski: Unreal Engine is the greatest slip backwards for movie

https://www.pcgamer.com/movies-tv/director-gore-verbinski-says-unreal-engine-is-the-greatest-slip...
29•LeoNatan25•1h ago•30 comments

Infracost (YC W21) Is Hiring Sr Back End Eng (Node.js+SQL) to Shift FinOps Left

https://www.ycombinator.com/companies/infracost/jobs/Sr9rmHs-senior-backend-engineer-node-js-sql
1•akh•3h ago

Instabridge has acquired Nova Launcher

https://novalauncher.com/nova-is-here-to-stay
205•KORraN•15h ago•137 comments

The GDB JIT Interface

https://bernsteinbear.com/blog/gdb-jit/
46•surprisetalk•4d ago•5 comments

Which AI Lies Best? A game theory classic designed by John Nash

https://so-long-sucker.vercel.app/
129•lout332•12h ago•61 comments

IPv6 is not insecure because it lacks a NAT

https://www.johnmaguire.me/blog/ipv6-is-not-insecure-because-it-lacks-nat/
188•johnmaguire•15h ago•265 comments

Unconventional PostgreSQL Optimizations

https://hakibenita.com/postgresql-unconventional-optimizations
366•haki•20h ago•55 comments

California is free of drought for the first time in 25 years

https://www.latimes.com/california/story/2026-01-09/california-has-no-areas-of-dryness-first-time...
385•thnaks•11h ago•189 comments

The Unix Pipe Card Game

https://punkx.org/unix-pipe-game/
220•kykeonaut•17h ago•69 comments

Are arrays functions?

https://futhark-lang.org/blog/2026-01-16-are-arrays-functions.html
133•todsacerdoti•2d ago•91 comments

The space and motion of communicating agents (2008) [pdf]

https://www.cl.cam.ac.uk/archive/rm135/Bigraphs-draft.pdf
40•dhorthy•5d ago•5 comments

Lunar Radio Telescope to Unlock Cosmic Mysteries

https://spectrum.ieee.org/lunar-radio-telescope
47•rbanffy•12h ago•7 comments

Ask HN: Do you have any evidence that agentic coding works?

271•terabytest•21h ago•259 comments

Our approach to age prediction

https://openai.com/index/our-approach-to-age-prediction/
109•pretext•15h ago•177 comments

Maintenance: Of Everything, Part One

https://press.stripe.com/maintenance-part-one
122•mitchbob•15h ago•19 comments

Show HN: Agent Skills Leaderboard

https://skills.sh
103•andrewqu•13h ago•34 comments

EmuDevz: A game about developing emulators

https://afska.github.io/emudevz/
7•ingve•3d ago•0 comments

Building Robust Helm Charts

https://www.willmunn.xyz/devops/helm/kubernetes/2026/01/17/building-robust-helm-charts.html
64•will_munn•2d ago•7 comments

Disaster planning for regular folks (2015)

https://lcamtuf.coredump.cx/prep/index-old.shtml
124•AlphaWeaver•6h ago•72 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•8mo ago

Comments

stevoski•8mo 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•8mo 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•8mo 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_•8mo ago
Spotbugs or checkstyle etc... would catch these. What does AI add here?
xyst•8mo 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•8mo 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•8mo 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•8mo 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•8mo 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•8mo ago
stupid af
Traubenfuchs•8mo 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•8mo 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•8mo ago
Can the QA team? How does the dev/staging environment help writing less buggy code?
rad_gruchalski•8mo ago
But can you leetcode heh.
TYMorningCoffee•8mo 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.