yceffort (English) https://yceffort.kr/en Grind. Learn. Repeat. en Sat, 10 Oct 2026 03:05:00 GMT <![CDATA[How to Compare the Models Behind a Coding Agent with SWE-bench]]> https://yceffort.kr/en/2026/10/swe-bench-before-swapping-models https://yceffort.kr/en/2026/10/swe-bench-before-swapping-models Sat, 10 Oct 2026 03:05:00 GMT <![CDATA[How Bundlers Remember Imports]]> https://yceffort.kr/en/2026/10/how-bundlers-remember-imports https://yceffort.kr/en/2026/10/how-bundlers-remember-imports Thu, 08 Oct 2026 14:04:00 GMT <![CDATA[Improving number-flow Performance: Moving Animations onto the Compositor Thread]]> https://yceffort.kr/en/2026/10/number-flow-compositor-performance https://yceffort.kr/en/2026/10/number-flow-compositor-performance Wed, 07 Oct 2026 07:05:00 GMT <![CDATA[Saving Marp Slides from a Next.js App for Offline Use]]> https://yceffort.kr/en/2026/09/offline-marp-slides-in-nextjs https://yceffort.kr/en/2026/09/offline-marp-slides-in-nextjs Wed, 30 Sep 2026 02:23:00 GMT <![CDATA[Pages You Leave Don't Die, They Hide: Next.js cacheComponents and React Activity]]> https://yceffort.kr/en/2026/09/nextjs-cache-components-activity https://yceffort.kr/en/2026/09/nextjs-cache-components-activity Sat, 26 Sep 2026 13:00:00 GMT <![CDATA[Tracing Toss Securities JavaScript Without Source Maps]]> https://yceffort.kr/en/2026/09/tracing-third-party-javascript-without-sourcemaps https://yceffort.kr/en/2026/09/tracing-third-party-javascript-without-sourcemaps Sat, 26 Sep 2026 09:00:00 GMT <![CDATA[Building a Bundle Analyzer with V8 Coverage and Source Maps]]> https://yceffort.kr/en/2026/09/building-coldpath-v8-coverage-analyzer https://yceffort.kr/en/2026/09/building-coldpath-v8-coverage-analyzer Tue, 22 Sep 2026 09:00:00 GMT <![CDATA[Tracing When This Blog's JavaScript Actually Runs]]> https://yceffort.kr/en/2026/09/tracing-bundle-waste-with-v8-coverage-and-sourcemaps https://yceffort.kr/en/2026/09/tracing-bundle-waste-with-v8-coverage-and-sourcemaps Tue, 22 Sep 2026 09:00:00 GMT <![CDATA[I Grew Never-Executed JavaScript to 10MiB]]> https://yceffort.kr/en/2026/09/unused-javascript-cost https://yceffort.kr/en/2026/09/unused-javascript-cost Wed, 16 Sep 2026 09:00:00 GMT <![CDATA[Running One Web on Multiple WebViews: Folding Environment Branches into Adapters]]> https://yceffort.kr/en/2026/09/one-web-on-multiple-webviews https://yceffort.kr/en/2026/09/one-web-on-multiple-webviews Wed, 09 Sep 2026 05:00:00 GMT <![CDATA[The Real Cost of Drop-in Compatibility: What I Threw Away Porting markdownlint-cli2 to Rust]]> https://yceffort.kr/en/2026/09/porting-markdownlint-cli2-to-rust https://yceffort.kr/en/2026/09/porting-markdownlint-cli2-to-rust Tue, 08 Sep 2026 12:00:00 GMT <![CDATA[Tearing Apart a Third-Party SDK and Rebuilding It My Way: Without Touching a Single Line of Logic]]> https://yceffort.kr/en/2026/08/rebuilding-a-vendor-sdk https://yceffort.kr/en/2026/08/rebuilding-a-vendor-sdk Mon, 31 Aug 2026 05:00:00 GMT <![CDATA[Measuring the Cost of Going Through a Service Worker: Building in the Lab the Control Group GA4 Could Not Give Me]]> https://yceffort.kr/en/2026/08/service-worker-caching-3 https://yceffort.kr/en/2026/08/service-worker-caching-3 Fri, 28 Aug 2026 11:00:00 GMT <![CDATA[Applying Service Worker Caching: App Router Traps and GA4 Field Data]]> https://yceffort.kr/en/2026/08/service-worker-caching-2 https://yceffort.kr/en/2026/08/service-worker-caching-2 Thu, 27 Aug 2026 11:00:00 GMT <![CDATA[Building an OG Scraping Server in Node.js (2): How SSRF Gets Through]]> https://yceffort.kr/en/2026/08/og-scraping-server-2 https://yceffort.kr/en/2026/08/og-scraping-server-2 Sat, 22 Aug 2026 05:00:00 GMT <![CDATA[Building an OG Scraping Server in Node.js (1): From Runtime Choice to Error Rate and Latency]]> https://yceffort.kr/en/2026/08/og-scraping-server-1 https://yceffort.kr/en/2026/08/og-scraping-server-1 Sat, 22 Aug 2026 04:30:00 GMT <![CDATA[Next.js Turbopack Turned One Singleton into Two: A Scope Hoisting Bug and a Circular Import]]> https://yceffort.kr/en/2026/08/turbopack-scope-hoisting-singleton-split https://yceffort.kr/en/2026/08/turbopack-scope-hoisting-singleton-split Wed, 19 Aug 2026 03:00:00 GMT <![CDATA[Killing Frame Drops in a framer-motion Banner: Two Wrong Turns and One Easing Function]]> https://yceffort.kr/en/2026/08/framer-motion-banner-frame-drop https://yceffort.kr/en/2026/08/framer-motion-banner-frame-drop Sat, 15 Aug 2026 11:00:00 GMT <![CDATA[How Service Worker Caching Works: The Proxy, the Lifecycle, and Five Strategies]]> https://yceffort.kr/en/2026/08/service-worker-caching-1 https://yceffort.kr/en/2026/08/service-worker-caching-1 Wed, 12 Aug 2026 11:00:00 GMT <![CDATA[Porting number-flow to Old Browsers: Five Decisions and Two Reversals]]> https://yceffort.kr/en/2026/08/number-flow-fork-for-old-browsers https://yceffort.kr/en/2026/08/number-flow-fork-for-old-browsers Tue, 11 Aug 2026 13:00:00 GMT <![CDATA[What Happens When You Install typescript@7: A Blog Monorepo Migration Log]]> https://yceffort.kr/en/2026/08/typescript-7-oxc-migration https://yceffort.kr/en/2026/08/typescript-7-oxc-migration Mon, 10 Aug 2026 13:00:00 GMT <![CDATA[Autoscaling Is Automatic but Not Instant: HPA's Timeline, Measured Segment by Segment]]> https://yceffort.kr/en/2026/08/k8s-for-frontend-5 https://yceffort.kr/en/2026/08/k8s-for-frontend-5 Mon, 10 Aug 2026 03:00:00 GMT <![CDATA[How Do Pods Terminate? Measuring the Causes and Fixes of Deploy-Time Errors]]> https://yceffort.kr/en/2026/08/k8s-for-frontend-4 https://yceffort.kr/en/2026/08/k8s-for-frontend-4 Sat, 08 Aug 2026 14:00:00 GMT <![CDATA[How Does Traffic Reach My Pod? From ClusterIP to port-forward]]> https://yceffort.kr/en/2026/08/k8s-for-frontend-3 https://yceffort.kr/en/2026/08/k8s-for-frontend-3 Thu, 06 Aug 2026 14:00:00 GMT <![CDATA[How My Next.js App Becomes a Pod: A Record of Opening Up Containers and Pods]]> https://yceffort.kr/en/2026/08/k8s-for-frontend-2 https://yceffort.kr/en/2026/08/k8s-for-frontend-2 Wed, 05 Aug 2026 12:00:00 GMT <![CDATA[A Kubernetes Concept Map for Frontend Developers: From Pods to Autoscalers]]> https://yceffort.kr/en/2026/08/k8s-for-frontend-1 https://yceffort.kr/en/2026/08/k8s-for-frontend-1 Wed, 05 Aug 2026 11:00:00 GMT <![CDATA[Why Is Your Node.js Pod That Size? Sizing Measured Firsthand, from NODE_OPTIONS to Pod Count]]> https://yceffort.kr/en/2026/08/nodejs-k8s-pod-sizing https://yceffort.kr/en/2026/08/nodejs-k8s-pod-sizing Mon, 03 Aug 2026 12:00:00 GMT <![CDATA[Where Frontend Came From, and Where It Goes After Agents]]> https://yceffort.kr/en/2026/07/frontend-past-present-after-agents https://yceffort.kr/en/2026/07/frontend-past-present-after-agents Wed, 22 Jul 2026 01:00:00 GMT <![CDATA[When Was the Last Time You Read Code Seriously?]]> https://yceffort.kr/en/2026/06/learning-what-ai-cant-do https://yceffort.kr/en/2026/06/learning-what-ai-cant-do Sun, 21 Jun 2026 02:00:00 GMT <![CDATA[If the Code Meets Spec and the Bugs Get Fixed, Does It Matter That You Can't Read It?]]> https://yceffort.kr/en/2026/06/do-you-need-to-read-code https://yceffort.kr/en/2026/06/do-you-need-to-read-code Thu, 11 Jun 2026 15:00:00 GMT <![CDATA[If AI Erases the Boundaries Between Planning, Development, and Design, What Remains?]]> https://yceffort.kr/en/2026/06/when-job-titles-blur https://yceffort.kr/en/2026/06/when-job-titles-blur Thu, 11 Jun 2026 15:00:00 GMT <![CDATA[React cache() Deep Dive: Request-Scoped Memoization, Read from the Source]]> https://yceffort.kr/en/2026/05/react-cache-function-deep-dive https://yceffort.kr/en/2026/05/react-cache-function-deep-dive Sat, 30 May 2026 05:00:00 GMT <![CDATA[The TanStack npm Supply Chain Attack: Why pull_request_target Is Dangerous]]> https://yceffort.kr/en/2026/05/tanstack-npm-supply-chain-attack https://yceffort.kr/en/2026/05/tanstack-npm-supply-chain-attack Sat, 16 May 2026 03:00:00 GMT <![CDATA[Bun rewrite Exposed Something: OSS Could Only Stop External AI]]> https://yceffort.kr/en/2026/05/bun-rust-rewrite-real-story https://yceffort.kr/en/2026/05/bun-rust-rewrite-real-story Thu, 14 May 2026 17:00:00 GMT <![CDATA[What makes a package you can keep using for years different]]> https://yceffort.kr/en/2026/05/good-package-for-long-term-users https://yceffort.kr/en/2026/05/good-package-for-long-term-users Sat, 09 May 2026 03:54:08 GMT <![CDATA[The invisible cost in PR diffs: we are not reviewing the code our users receive]]> https://yceffort.kr/en/2026/05/pr-diff-vs-bundle https://yceffort.kr/en/2026/05/pr-diff-vs-bundle Sun, 03 May 2026 06:50:00 GMT <![CDATA['use cache' Directive Deep Dive: To the End of Cache Boundaries]]> https://yceffort.kr/en/2026/05/use-cache-deep-dive https://yceffort.kr/en/2026/05/use-cache-deep-dive Fri, 01 May 2026 10:47:36 GMT <![CDATA['use client' Directive Deep Dive: To the Edge of Client Boundaries]]> https://yceffort.kr/en/2026/05/use-client-deep-dive https://yceffort.kr/en/2026/05/use-client-deep-dive Fri, 01 May 2026 03:00:00 GMT <![CDATA[AI Only Amplifies Me to the Level I Can See]]> https://yceffort.kr/en/2026/04/ai-only-amplifies-what-you-see https://yceffort.kr/en/2026/04/ai-only-amplifies-what-you-see Mon, 20 Apr 2026 03:00:00 GMT <![CDATA[Why We Still Use Next.js]]> https://yceffort.kr/en/2026/03/why-still-nextjs https://yceffort.kr/en/2026/03/why-still-nextjs Mon, 23 Mar 2026 13:00:00 GMT <![CDATA[Is Next.js Fast Enough?]]> https://yceffort.kr/en/2026/03/is-nextjs-fast-enough https://yceffort.kr/en/2026/03/is-nextjs-fast-enough Sat, 21 Mar 2026 13:00:00 GMT <![CDATA[Whose React Is It?]]> https://yceffort.kr/en/2026/03/react-is-whose https://yceffort.kr/en/2026/03/react-is-whose Thu, 19 Mar 2026 14:30:00 GMT <![CDATA[Why Cloudflare Rebuilt Next.js]]> https://yceffort.kr/en/2026/03/why-cloudflare-rebuilt-nextjs https://yceffort.kr/en/2026/03/why-cloudflare-rebuilt-nextjs Tue, 17 Mar 2026 11:07:31 GMT <![CDATA[The Rise and Fall of Next.js Edge Runtime]]> https://yceffort.kr/en/2026/03/nextjs-edge-runtime-rise-and-fall https://yceffort.kr/en/2026/03/nextjs-edge-runtime-rise-and-fall Mon, 16 Mar 2026 07:24:02 GMT <![CDATA[React Server Functions Deep Dive: To the End of "use server"]]> https://yceffort.kr/en/2026/03/react-server-functions-deep-dive 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<![CDATA[Seeking Beta Readers for Node.js Deep Dive (Working Title)]]> https://yceffort.kr/en/2026/02/nodejs-deep-dive-beta-reader https://yceffort.kr/en/2026/02/nodejs-deep-dive-beta-reader Thu, 19 Feb 2026 13:00:00 GMT <![CDATA[React Compiler Deep Dive: From Principles to Output]]> https://yceffort.kr/en/2026/02/react-compiler-deep-dive https://yceffort.kr/en/2026/02/react-compiler-deep-dive Thu, 19 Feb 2026 05:00:00 GMT <![CDATA[In the Age of AI-Generated Code, Where is Frontend Engineering Headed?]]> https://yceffort.kr/en/2026/02/frontend-engineering-in-ai-era https://yceffort.kr/en/2026/02/frontend-engineering-in-ai-era Sat, 14 Feb 2026 03:00:00 GMT <![CDATA[Complete Guide to Core Coding Agent Concepts]]> https://yceffort.kr/en/2026/01/coding-agent-core-concepts https://yceffort.kr/en/2026/01/coding-agent-core-concepts Sat, 17 Jan 2026 14:00:00 GMT <![CDATA[Preventing Memory Leaks with IntersectionObserver Singleton Pattern and WeakMap]]> https://yceffort.kr/en/2026/01/intersection-observer-singleton-weakmap https://yceffort.kr/en/2026/01/intersection-observer-singleton-weakmap Sat, 17 Jan 2026 12:30:00 GMT <![CDATA[How to Check if All Cases Are Handled in TypeScript Switch Statements]]> https://yceffort.kr/en/2026/01/typescript-exhaustive-check https://yceffort.kr/en/2026/01/typescript-exhaustive-check Sat, 17 Jan 2026 11:00:00 GMT <![CDATA[How to Efficiently Process Massive JSON Responses]]> https://yceffort.kr/en/2026/01/handling-large-json-responses https://yceffort.kr/en/2026/01/handling-large-json-responses Sun, 11 Jan 2026 06:00:00 GMT <![CDATA[WebGPU Is Finally Available in Every Browser]]> https://yceffort.kr/en/2025/12/webgpu-all-browsers https://yceffort.kr/en/2025/12/webgpu-all-browsers Tue, 30 Dec 2025 03:00:00 GMT <![CDATA[A Guide to Next.js Caching]]> https://yceffort.kr/en/2025/12/nextjs-caching-deep-dive https://yceffort.kr/en/2025/12/nextjs-caching-deep-dive Wed, 24 Dec 2025 01:00:00 GMT <![CDATA[React's New Lint Rule: set-state-in-effect]]> https://yceffort.kr/en/2025/12/react-set-state-in-effect-lint-rule https://yceffort.kr/en/2025/12/react-set-state-in-effect-lint-rule Tue, 16 Dec 2025 06:30:00 GMT <![CDATA[From useEvent to useEffectEvent: React's Event Handler Stabilization Journey]]> https://yceffort.kr/en/2025/12/use-effect-event https://yceffort.kr/en/2025/12/use-effect-event Mon, 15 Dec 2025 05:30:00 GMT <![CDATA[It's a React vulnerability, so why do I have to upgrade Next.js?]]> https://yceffort.kr/en/2025/12/nextjs-react-security-vulnerability https://yceffort.kr/en/2025/12/nextjs-react-security-vulnerability Fri, 12 Dec 2025 03:00:00 GMT <![CDATA[Web Service Performance Analysis (4)]]> https://yceffort.kr/en/2025/06/web-performance-analysis-4 https://yceffort.kr/en/2025/06/web-performance-analysis-4 Sat, 19 Jul 2025 10:20:44 GMT <![CDATA[Web Service Performance Analysis (3)]]> https://yceffort.kr/en/2025/06/web-performance-analysis-3 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https://yceffort.kr/en/2021/12/nodejs-memory-limit https://yceffort.kr/en/2021/12/nodejs-memory-limit Mon, 13 Dec 2021 10:21:45 GMT <![CDATA[Handling Uncaught Async Errors in JavaScript Correctly]]> https://yceffort.kr/en/2021/08/uncaught-async-error https://yceffort.kr/en/2021/08/uncaught-async-error Mon, 23 Aug 2021 04:21:41 GMT <![CDATA[Understanding AST for JavaScript Developers (2026 Update)]]> https://yceffort.kr/en/2021/05/ast-for-javascript https://yceffort.kr/en/2021/05/ast-for-javascript Mon, 10 May 2021 00:40:39 GMT <![CDATA[Why GitHub Actions Cron Jobs Run Late, and What to Use Instead]]> https://yceffort.kr/en/2021/01/from-github-workflow-to-firebase-functions https://yceffort.kr/en/2021/01/from-github-workflow-to-firebase-functions Sun, 24 Jan 2021 12:16:38 GMT