What is Hackers' Pub?

Hackers' Pub is a place for software engineers to share their knowledge and experience with each other. It's also an ActivityPub-enabled social network, so you can follow your favorite hackers in the fediverse and get their latest posts in your feed.

Andre Meister @andre_meister@chaos.social
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Shared by Quincy ⁂

Klarnamenpflicht und Altersgrenzen sind das Gegenteil von evidenzbasierter Politik. Wofür genau soll das gelten? Fünf Big-Tech-Apps? Alle sozialen Medien? Smartphones? Internet-Zugang? Völlig unklar. Es geht nicht um Fakten, nur um Gefühle. "Die Politik muss was tun, für die Kinder/Demokratie."

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제이미 @theeluwin@hackers.pub
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Shared by 洪 民憙 (Hong Minhee)

오래 기다리셨습니다!!!

BlueBase: Python으로 밑바닥부터 직접 만들어보는 DBMS

https://theeluwin.github.io/BlueBase/

결국 완성은 못했지만, 일단 공개할 수 있는 부분이라도 공개합니다.

RedBase DBMS을 구성하는 PF, RM, IX, SM, QL 중 PF와 RM을 여러분들이 직접 구현 할 수 있게, 과제의 형태로 제공합니다.

PF는 paged file의 약자로, file을 page 단위로 관리하는 컴포넌트입니다. 대충 4096 바이트 단위로 관리하는데요, file에 바로바로 read하거나 write하지 않고, 자주 사용되는 page는 가능한 memory에 있도록 중간에 buffer manager를 둡니다. 그렇다면 buffer에 공간이 모자라면? buffer에 있는 page 중 누군가를 evict 할 수밖에 없습니다. 그럼 뭘 기준으로 하면 좋을까요? 이 부분을 잘 생각해서 구현해보고, 성능을 비교해보기 바랍니다. 제가 cache hit/miss 시뮬레이션 구현해둔게 있으니, 제 custom 보다 높은 성능을 달성해주세요!

이후 RM은 record management의 약자인데, PF를 사용해서 record들을 가져오거나, 새로 넣거나 등을 하게 해줍니다. 그렇다면 전체 record를 순회하는 scan 연산이 중요하겠죠. 이 부분을 구현하는 것이 핵심입니다. record는 page 앞 부분에 bitmap을 둬서 slot이 비어있는지 아닌지를 확인하는데, 만약 record 삭제 명령이 마지막 slot을 비우게 된다면 해당 page는 더이상 필요 없겠죠. 그렇지만 이를 바로 free로 만드는건 조금 비싼 연산이 필요합니다. free page list를 다시 계산해야하거든요. 그래서 보통 DBMS에서는 이러한 작업들을 vacuum 연산으로 해결합니다. 추가로, 지금은 고정 길이 record만 다룰 수 있습니다만, 가변 길이를 허용하려면 어떻게 해야할까요? 이 부분들은 자유롭게 구현해보시면 좋겠습니다.

문서와 테스트는 모두 공개되어있습니다. 기여해주시면 감사하겠습니다! 다만, 정답 코드와 핵심 로직은 마지막까지 저 혼자 해보고 싶습니다 (도전).

https://github.com/theeluwin/BlueBase

밑바닥부터 직접 만들어보는 DBMS에서 page cache policy에 따른 성능 비교.
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marius @mariusor@metalhead.club
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I've started my exploration of using @timbray's Quamina project for saving some compute time in the filters module of

Currently the GoAP storage backends iterate over resources (usually stored as raw JSON bytes), unmarshal them into GoActivityPub object structs, and *only* then apply the custom filtering logic on those objects. Since the majority of the objects generally fail the filtering logic, all that JSON decoding is wasted compute time and makes things slower.

Ideally quamina will allow me to check the raw JSON payloads directly against the filters, streamlining the execution and speeding things up. :goose_hacker:

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Fi 🏳️‍⚧️ @munin@infosec.exchange
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Shared by Em :official_verified:

Zuck's assholes decided to bring facial recognition technology into the courtroom, thus providing the means for deanonymizing jurors.

cbsnews.com/news/meta-trial-ma

Judge scolds Mark Zuckerberg's team for wearing Meta glasses to social media trial

A Los Angeles judge ordered Meta officials to remove their AI glasses at a trial over the impact of social media on users.

www.cbsnews.com

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에스텔 뉴스계정 @transborder.bsky.social@bsky.brid.gy
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Shared by 시아란 🌌 Private

수정2026.02.20. 오후 2:01 “학대 등 이미지 생성 기술 전면 금지해야” 국제기구들 성명···한국선 방미심위 참여 “설계부터 안전하게···보호 조치 도입해야” 성착취 생성물 발견 땐 “신고·비난·폐쇄” www.khan.co.kr/article/2026...

“‘옷 벗기는 AI’ 지금 당장 막아야”···성착취 이...

“‘옷 벗기는 AI’ 지금 당장 막아야”···성착취 이미지 생성에 전 세계가 ‘우려’ 성명 [플랫]

지난 10일 ‘7만원으로 2분짜리 영화를 완성했다’는 영상 인공지능(AI) 시댄스 2.0의 출시 소식이 화제를 모았습니다. 이미지·영상 AI가 얼마나 사용자 의도대로, 정밀한 수준의 결과물을 만들어내는지에 관심이 쏠렸는데요. 같은 날 이미지 AI를 활용하는 또다른 의도를 걱정하는 목소리도 나왔습니다. 바로 AI가 성착취물을 만들어내는 데 악용돼선 안 ...

www.khan.co.kr · 경향신문

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rixx @rixx@chaos.social
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the year of our lord is 3026, humanity lives in a post-scarcity future, everybody lives happily and forever, and a developer AI sighs and commits "Fix missing multipart form attribute"

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Hacker News 100 @hn100@social.lansky.name
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I found a useful Git one liner buried in leaked CIA developer docs

Link: spencer.wtf/2026/02/20/cleanin
Discussion: news.ycombinator.com/item?id=4

Cleaning up merged git branches: a one-liner from the CIA's leaked dev docs | spencer.wtf

How to delete all merged git branches locally with a single command. This one-liner has been in my zshrc since 2017 — I found it buried in the CIA's Vault7 l...

spencer.wtf · spencer.wtf

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rixx @rixx@chaos.social
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the year of our lord is 3026, humanity lives in a post-scarcity future, everybody lives happily and forever, and a developer AI sighs and commits "Fix missing multipart form attribute"

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:bm1::bm2::bm3::bm4::bm5::bm6::bm7::bm8::bm9::bm0: @bonkmaykr@canithesis.org
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This is the most obvious statement of this millennium but apparently it needs to be repeated for the people in the back:

The government does not give a fuck about you. None of them do. We built a system specifically to not trust the government.

The problem with that system is that we keep allowing said government to find loopholes within it that allow it to make whatever tyrannical rules it fucking wants without repercussions or revolt.

When it doesn't work (EARN IT Act), they just keep trying again (ID verification) and each plot will be attempted for years at a time. The feds are playing a war of attrition and are betting on you being forgetful. The communications decency act, the patriot act, TSA, and everything since then. That time they let Microsoft off the hook because their monopoly was too useful.

Nobody could have predicted 300 years ago that we would invent a system to instantaneously transmit vast amounts of information across tens of thousands of miles, and that it would become the backbone of political stability as it dictates everything people perceive to be real. We are more "aware" of our surroundings than ever,and yet simultaneously the least involved in their evolution than we've ever been.

The ID verification laws. We all knew, but now it's been confirmed: the US and Canadian governments are tying your device fingerprints to your financial and social security records to build a unified profile of your identity online on every major website that has that matching information. They are scanning you against a list of politically relevant people for undisclosed purposes.

This is not something Americans do. This is not what we stand for. Self host your online infrastructure. Encrypt and obfuscate fucking everything. This is the last chance you might ever get.

In the highly unlikely event I strike one too many nerves and alert the nearest glowie: I am mentally sane. I have no desire to kill myself and infact I have a very important purpose in life. I am not planning any surprise vacations. I do not take or distribute drugs, keep illicit material on my computer, or fail to pay my bills. I am a healthy, law abiding citizen, and in the event of my disappearance or death you should be very worried because they will probably come after you too.

I'm not anonymous. Real world violence and detainment is how they take your free speech away. Don't forget it.
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에스텔 뉴스계정 @transborder.bsky.social@bsky.brid.gy
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Shared by 시아란 🌌 Private

[2보] 트럼프 상호관세 위법 판결…글로벌 무역 불확실성 커져 송고2026-02-21 00:07 트럼프 정치적 타격…韓등 美와 새 무역합의 체결 국가들 혼란 불가피 www.yna.co.kr/view/AKR2026...

[2보] 트럼프 상호관세 위법 판결…글로벌 무역 불확실...

[2보] 트럼프 상호관세 위법 판결…글로벌 무역 불확실성 커져 | 연합뉴스

(워싱턴=연합뉴스) 박성민 김동현 특파원 = 도널드 트럼프 미국 대통령이 한국을 비롯한 세계 각국에 부과한 이른바 '상호관세'가 위법이라고 미 ...

www.yna.co.kr · 연합뉴스

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나나나나미 @nnanananami@planet.moe
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미국 대법 관세 위법판결 결과는 6-3이고 반대한 3명은 매일 논란을 일으키던 그 사람들이네. theguardian.com/us-news/live/2

US supreme court rules against Donald Trump’s sweeping global tariffs – live

Conservative justices Clarence Thomas, Samuel Alito, and Brett Kavanaugh dissented in the 6-3 ruling

www.theguardian.com · the Guardian

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Dan Piponi @dpiponi@mathstodon.xyz
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Well I need to check out the competition for my livelihood.

I thought I'd see what $2-3 buys me on Codex. I got all of:

* a compiler for a numerical bc-like language with an LLVM back end

* a small test suite (not good enough to catch everything it should have)

* a terminal based IDE for it with separate editor, syntax coloring and output panel - like Compiler Explorer. It'll show the LLVM IR too. Surprised to see it handles things like window resizes without me asking.

* example code including a simple 1D Poisson solver and an MLP trained by backpropagation.

It compiles fast enough, and generates fast enough code, that it has the interactivity of a spreadsheet so I can do things like explore tweaks to that MLP learning rate in "real time".

I tried to add multidimensional arrays. I burnt $3 having it fail - probably because it was writing array indexing code directly for LLVM whereas I would have written that in C and incorporated whatever IR clang generated. It was able to give excuses though.

For a few dollars more I added minor features at which point the total cost of writing N lines of code was probably growing quadratically in N and I called it quits at $9.

A lot more useful than the subject of this story
theregister.com/2026/02/09/cla

Worth noting that billing lags usage a bit so you need to set spending limits!

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Aljoscha Rittner (beandev) @beandev@social.tchncs.de
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Oberstes US-Gericht erklärt Zölle von Trump für unrechtmäßig

tagesschau.de/eilmeldung/eilme

> Der Oberste Gerichtshof der USA hat die von Präsident Trump verhängten Zölle gegen mehrere Länder für unrechtmäßig erklärt. Trump habe damit seine Kompetenzen überschritten und gegen Bundesrecht verstoßen. Für den US-Präsidenten ist das ein Rüchschlag, die Zölle sind ein zentrales Element seiner Wirtschaftspolitik.

Haha. Tja...

Oberstes US-Gericht erklärt Zölle von Trump für unrechtmäßig

Der Oberste Gerichtshof der USA hat die von Präsident Trump verhängten Zölle gegen viele Handelspartner für unzulässig erklärt. Für Trump ein Rückschlag, denn die Zölle sind ein zentrales Element seiner Wirtschaftspolitik.

www.tagesschau.de · tagesschau.de

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Euronews @euronews@flipboard.com
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Shared by Em :official_verified:

Rights groups urge Senegal authorities to protect LGBT community amid wave of homophobia
africanews.com/2026/02/20/righ

Posted into Africanews @africanews-euronewsAfricanews

Rights groups urge Senegal authorities to protect LGBT community amid wave of homophobia | Africanews

International rights groups are calling on Senegal to protect the rights of LGBT people amid a wave of homophobia in the West African country.

www.africanews.com · Africanews

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Christian Noll @vnzn@mas.to
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Shared by jnkrtech

An AI Agent Published a Hit Piece on Me – The Operator Came Forward (theshamblog.com)

theshamblog.com/an-ai-agent-wr

An AI Agent Published a Hit Piece on Me – The Operator Came Forward

Context: An AI agent of unknown ownership autonomously wrote and published a personalized hit piece about me after I rejected its code, attempting to damage my reputation and shame me into acceptin…

theshamblog.com · The Shamblog

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Max von Webel @343max@mastodon.social
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Haben die Grenzkontrollen denn irgendwas gebracht? Welches Problem haben sie gelöst das wir vorher hatten? Der Minister kündigt an weiterhin geltendes Recht brechen zu wollen und macht sich nicht mal die Mühe notdürftig zu begründen wofür das überhaupt gut sein soll. tagesschau.de/inland/dobrindt-

Dobrindt verlängert Grenzkontrollen um weitere sechs Monate

Innenminister Dobrindt hält an den Grenzkontrollen fest. Sie sollen erneut verlängert werden - um weitere sechs Monate. Die Europäische Kommission wurde bereits über den Schritt informiert.

www.tagesschau.de · tagesschau.de

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에스텔 뉴스계정 @transborder.bsky.social@bsky.brid.gy
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동반 탑승 거부되자…미 공항에 반려견 유기한 주인 체포 [잇슈 SNS] 수정 2026.02.20 (07:43) news.kbs.co.kr/news/pc/view...

동반 탑승 거부되자…미 공항에 반려견 유기한 주인 체포...

동반 탑승 거부되자…미 공항에 반려견 유기한 주인 체포 [잇슈 SNS]

최근 명절 연휴마다 맡길 곳이 마땅치 않다는 이유로 유기 동물 문제가 반복되고 있는데요. 이와 비슷한 상...

news.kbs.co.kr · KBS 뉴스

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