yceffort
KO
LIVE Β· SEOUL Β· 2026

GRIND.LEARN,REPEAT.

A blog by yceffort β€” a frontend engineer writing about the shape of software, one week at a time.

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06 ITEMS

Popular this season

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#security#github-actions#npm

The TanStack npm Supply Chain Attack: Why pull_request_target Is Dangerous

24 min read
#bun#rust#oss

Bun rewrite Exposed Something: OSS Could Only Stop External AI

27 min read
#frontend#package-management#semver

What makes a package you can keep using for years different

20 min read
#frontend#bundle-analysis#performance

The invisible cost in PR diffs: we are not reviewing the code our users receive

22 min read
β—† Directive Deep Dive
#react#nextjs#frontend

'use cache' Directive Deep Dive: To the End of Cache Boundaries

40 min read
β—† Directive Deep Dive
#react#nextjs#frontend

'use client' Directive Deep Dive: To the Edge of Client Boundaries

33 min read
06 ITEMS

Recent

latest writing
01

AI Only Amplifies Me to the Level I Can See

#ai#learning#career
I'm definitely coding faster, but why are my codebase and skills staying the same? Examining the gap between perceived and proven benefits.
2026-04-2017 min Β· read
02

Why We Still Use Next.js

#nextjs#react#vercel
Switching costs stronger than technical superiority
2026-03-2319 min Β· read
03

Is Next.js Fast Enough?

#nextjs#web-performance#react
The uncomfortable truth benchmarks reveal
2026-03-2123 min Β· read
04

Whose React Is It?

#react#governance#nextjs
The questions React Foundation must answer
2026-03-1921 min Β· read
05

Why Cloudflare Rebuilt Next.js

#nextjs#cloudflare#edge-computing
What question does vinext really ask?
2026-03-1720 min Β· read
06

The Rise and Fall of Next.js Edge Runtime

#nextjs#edge-computing#serverless
Hey Edge Middleware, how have you been?
2026-03-1613 min Β· read