frontpage.
newsnewestaskshowjobs

Made with ♥ by @iamnishanth

Open Source @Github

fp.

Open in hackernews

Ask HN: What was the hardest bug you tracked down in 2025?

2•varshith17•4h ago
We talk a lot about shipping features, but I want to hear the war stories.

I spent almost a month chasing a silent data corruption issue that turned out to be floating-point non-determinism between x86 and ARM chips. It completely changed how I look at "reliable" memory.

What was your "white whale" bug of the year?

Comments

Agent_Builder•4h ago
While building GTWY, we realized stack traces stop being useful once workflows go async. So we designed things around step-level visibility and shared context instead.
varshith17•2h ago
Async stack traces are a nightmare. You lose the causality chain completely.

We ran into a similar issue with 'Shared Context.' We tried to sync the context between an x86 server and an ARM edge node, but because of the floating-point drift, the 'Context' itself was slightly different on each machine.

Step-level visibility is great, but did you have to implement any strict serialization for that shared context to keep it consistent?

Ask HN: What did you read in 2025?

229•kwar13•20h ago•318 comments

Ask HN: What skills do you want to develop or improve in 2026?

213•meridion•1d ago•349 comments

Ask HN: How are you sandboxing coding agents?

4•m-hodges•1h ago•1 comments

Tell HN: Merry Christmas

1941•basilikum•2d ago•424 comments

Ask HN: What was the hardest bug you tracked down in 2025?

2•varshith17•4h ago•2 comments

Tell HN: I am afraid AI will take my job at some point

5•funnyfoobar•5h ago•14 comments

Postgres for everything, does it work?

5•saisrirampur•8h ago•3 comments

Ask HN: What are the best engineering blogs with real-world depth?

454•nishilpatel•3d ago•134 comments

Ask HN: Pivot from SWE to What?

46•aupra•1d ago•39 comments

Ask HN: Is Dart a particularly optimised language for front-end development?

4•theanonymousone•14h ago•5 comments

Tell HN: Merry Christmas

91•franze•2d ago•56 comments

Are you verifying that products are readable by AI shopping

2•David_0101•15h ago•0 comments

Ask HN: What is the international distribution/statistics of HN visitors?

59•KellyCriterion•1d ago•26 comments

Ask HN: How many HN'ers Celebrate Christmas vs. ?

18•gist•2d ago•31 comments

Looking for Decent Conversation?

101•kmstout•2d ago•14 comments

Ask HN: Why isn't there competition to LinkedIn yet?

57•antfie•4d ago•57 comments

Ask HN: Useful (Non-Coding) Agents?

2•qaboutthat•19h ago•0 comments

Ask HN: Good uses cases for Fabrice's microquickjs

14•fud101•2d ago•5 comments

Stronk.app – open-source gym lifts journal

63•apatheticonion•3d ago•29 comments

Ask HN: At 34, can I aspire to being more than a JavaScript widget engineer?

26•yesitcan•2d ago•21 comments

Google Cloud Run cost me $4,676 in 6 weeks with zero traff

49•creativesage•2d ago•30 comments

Ask HN: My mother was scammed out of all her savings. What should I do?

133•scapbi•4d ago•66 comments

Ask HN: What developer tool do you wish existed in 2026?

22•allenleee•5d ago•21 comments

Ask HN: People who tried both, how does Waymo compare to Tesla Robotaxi?

6•Austin_Conlon•11h ago•2 comments

Ask HN: Oberon et al., vs. Rust

17•mikethe•4d ago•30 comments

Ask HN: What do you consider fun?

22•IndySun•1d ago•13 comments

Ask HN: Why Do You Blog?

20•onesandofgrain•1d ago•11 comments

Are students replacing laptops with iPads in 2026?

4•xthe•1d ago•6 comments

Ask HN: What's the best lecture or talk you've seen in 2025?

23•hopefully_can•1d ago•2 comments

Tell HN: Merry Christmas

19•teruakohatu•3d ago•4 comments