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Jaeyeol Lee

@kodingwarrior@hackers.pub · 561 following · 418 followers

Neovim Super villain. 풀스택 엔지니어 내지는 프로덕트 엔지니어라고 스스로를 소개하지만 사실상 잡부를 담당하는 사람. CLI 도구를 만드는 것에 관심이 많습니다.

Hackers' Pub에서는 자발적으로 바이럴을 담당하고 있는 사람. Hackers' Pub의 무궁무진한 발전 가능성을 믿습니다.

그 외에도 개발자 커뮤니티 생태계에 다양한 시도들을 합니다. 지금은 https://vim.kr / https://fedidev.kr 디스코드 운영 중

Blog
kodingwarrior.github.io
mastodon
@kodingwarrior@silicon.moe
Github
@malkoG

OSTEP 독학 일지 - H.0.

Jaeyeol Lee @kodingwarrior@hackers.pub

6년 차 개발자가 기본기를 다지기 위해 OS 기초를 다시 공부하는 여정을 담은 글입니다. 저자는 신입 개발자 수준의 기본기를 갖추기 위해 OSTEP 교재를 선택하고, xv6 프로젝트를 통해 운영체제 동작 원리를 체화하고자 합니다. 이 글에서는 xv6 과제들을 단계별로 공략하며 겪는 우여곡절과 발견, 그리고 이를 통해 얻는 인사이트를 서사적으로 풀어낼 계획을 밝힙니다. 단순히 지식을 정리하는 것을 넘어, 독자에게 재미있는 스토리를 전달하고 기술 면접에도 도움이 될 만한 생생한 경험을 공유하고자 하는 저자의 의지가 돋보입니다. OSSCA 2025 멘토링 경험에서 영감을 받아 시작된 이 여정은, 개발자로서의 성장과 더불어 해커스펍 커뮤니티에도 기여하고자 하는 저자의 열정을 보여줍니다.

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chewing_leopard @chewing_leopard@hackers.pub
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Shared by Jaeyeol Lee

바이브코딩의 순기능(?) 이라고 할까요? 이런게 있으면 편하지 않을까? 라고 생각했을 때 적당한 도구를 빠르게 쳐낼 수 있는게 매력인 것 같아요. 말 못알아듣고 무한루프 돌때는 좀 그렇지만...

제가 관전하고 있는 OS 스터디에서 서울대 커리큘럼을 주로 활용하는데, 거기에 맞춰서 카이스트 자료도 정리해놓고 이것저것 붙였습니다. 만들고 나니 기분이 좋네요!!

OSTEP Tracker의 강의 항목을 선택했을 때 나오는 화면. 왼쪽은 SNU, 오른쪽은 KAIST 자료로 이루어져 있습니다.OSTEP Tracker의 대시보드(진도 현황 표시)
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notJoon @joonnot@hackers.pub
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1.8 마일스톤 까지 얼마 안남아서 푸쉬 겸 이슈 남은거 있으면 좀 가져갈까 했는데, 다 할당되어 있어서 신경은 안써도 되겠군. 대시보드나 마저 만들어야지

fedify 1.8 마일스톤 51%
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Jaeyeol Lee @kodingwarrior@hackers.pub
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CLI 도구 만드는거에 진심이어서 CLI 도구 만드는게 비즈니스 모델인 회사가, 이걸로만 누적 600만 달러 이상을 투자 받았는데, CLI 코딩 에이전트 시장에 뛰어들었다??? 이건 생태계 교란종임...

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Simon Willison @simon@fedi.simonwillison.net
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Shared by Jaeyeol Lee

July has been a truly incredible month for LLM releases from China - Moonshot (Kimi K2), Z ai (GLM-4.5) and 5 new releases from Qwen

I think it's undeniable that the best available open weight models now come from the Chinese AI labs simonwillison.net/2025/Jul/30/

The best available open weight LLMs now come from China

Something that has become undeniable this month is that the best available open weight models now come from the Chinese AI labs. I continue to have a lot of love …

simonwillison.net · Simon Willison’s Weblog

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Jaeyeol Lee @kodingwarrior@hackers.pub
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아니 이게 뭐야 ㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋ

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Fedify: ActivityPub server framework @fedify@hollo.social
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Shared by Jaeyeol Lee

🎉 Huge shoutout to @2chanhaeng이찬행 for implementing custom collection dispatchers in through the Korean program!

This incredible contribution adds support for creating arbitrary collections beyond the built-in ones (e.g., outbox, inbox, following, followers). Now developers can expose custom collections like user bookmarks, post categories, or any grouped content through the protocol:

federation
  .setCollectionDispatcher(
    "bookmarks",
    Article,
    "/users/{identifier}/bookmarks",
    async (ctx, values, cursor) => {
      const { posts, nextCursor } = await getBookmarkedPosts(values.identifier, cursor);
      return { items: posts, nextCursor };
    }
  )
  .setCounter(async (ctx, values) =>
    getBookmarkCount(values.identifier)
  );

The implementation is technically excellent with full support, both Collection and OrderedCollection types, cursor-based pagination, authorization predicates, and zero breaking changes. @2chanhaeng이찬행 delivered not just code but a complete feature with 313 lines of comprehensive documentation, practical examples, and thorough test coverage.

This opens up countless possibilities for ActivityPub applications built with Fedify. From user-specific collections to complex categorization systems, developers now have the flexibility to create any type of custom collection while maintaining full ActivityPub compliance.

Thank you @2chanhaeng이찬행 for this outstanding contribution and to the OSSCA program for fostering such excellent open source collaboration! 🚀

Summary Support for custom collection dispatchers with unique identifiers, allowing developers to create application-specific collections beyond the standard ActivityPub collections (outbox, inbox,...

Custom collection dispatchers · Issue #310 · fedify-dev/fedify

Summary Support for custom collection dispatchers with unique identifiers, allowing developers to create application-specific collections beyond the standard ActivityPub collections (outbox, inbox,...

github.com · GitHub

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제이미 @theeluwin@hackers.pub
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Shared by Jaeyeol Lee

지난 한달간 열심히 개발한 실시간 퀴즈 사이트입니다. django, django drf, jwt 기반 인증, websocket, ticket으로 받아오는 jwt websocket 인증, celery, 등을 모두 사용한 예시이기도 합니다. 구경와주세요~

https://github.com/theeluwin/Qlickr

Realtime Quiz Platform. Contribute to theeluwin/Qlickr development by creating an account on GitHub.

GitHub - theeluwin/Qlickr: Realtime Quiz Platform.

Realtime Quiz Platform. Contribute to theeluwin/Qlickr development by creating an account on GitHub.

github.com · GitHub

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Hacker News 50 @hn50@social.lansky.name
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Shared by Jaeyeol Lee

Tao on "blue team" vs. "red team" LLMs

Link: mathstodon.xyz/@tao/1149156048
Discussion: news.ycombinator.com/item?id=4

Terence Tao (@tao@mathstodon.xyz)

In the field of cybersecurity, a distinction is made between the "blue team" task of building a secure system, and the "red team" task of locating vulnerabilities in such systems. The blue team is more obviously necessary to create the desired product; but the red team is just as essential, given the damage that can result from deploying insecure systems. The nature of these teams mirror each other; mathematicians would call them "dual". The output of a blue team is only as strong as its weakest link: a security system that consists of a strong component and a weak component (e.g., a house with a securely locked door, but an open window) will be insecure (and in fact worse, because the strong component may convey a false sense of security). Dually, the contributions to a red team can often be additive: a red team report that contains both a serious vulnerability and a more trivial one is more useful than a report that only contains the serious issue, as it is valuable to have the blue team address both vulnerabilities. (But excessive low-quality reports can dilute attention from critical issues.) Because of this, unreliable contributors may be more useful in the "red team" side of a project than the "blue team" side, though the blue team can still accommodate such contributors provided that the red team is competent enough to catch almost all of the errors that the contributor to the blue team might make. Also, unreliable red team contributions only add value if they _augment_ the output of more reliable members of that team, rather than _replace_ that output, and if their output can be effectively filtered or triaged by more experienced red team members. (1/3)

mathstodon.xyz · Mathstodon

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