https://www.youngju.dev/blog 천천히 올바르게. AI Researcher & DevOps Engineer Youngju's tech blog. GPU/CUDA, LLM, MLOps, Kubernetes AI workloads, distributed training, and data engineering. ko fjvbn2003@gmail.com (Youngju Kim) fjvbn2003@gmail.com (Youngju Kim) Sat, 16 May 2026 00:00:00 GMT https://www.youngju.dev/blog/culture/2026-05-16-browser-devtools-deep-dive-2026-chrome-firefox-safari-edge-webdriver-bidi-cdp-lighthouse-12-ai-assistance-gemini-deep-dive.en https://www.youngju.dev/blog/culture/2026-05-16-browser-devtools-deep-dive-2026-chrome-firefox-safari-edge-webdriver-bidi-cdp-lighthouse-12-ai-assistance-gemini-deep-dive.en Chrome DevTools, Firefox DevTools, Safari Web Inspector, Edge DevTools, WebDriver BiDi (W3C, the CDP successor), Chrome AI Assistance (Gemini), Performance Insights, Recorder + Workflows, Workspace, Lighthouse 12, Lighthouse CI, PageSpeed Insights, Core Web Vitals overlay, Privacy Sandbox debugger, Animation Inspector, Memory + JS profiler, Coverage tab, Network throttling, Device emulation, CSS Overview, Source maps, Long task analyzer (INP), Puppeteer / Playwright / Cypress, and front-end performance engineering in Korea and Japan — a single map of the 2026 browser DevTools landscape. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) devtoolsbrowser-devtoolschrome-devtoolsfirefox-devtoolssafari-web-inspectoredge-devtoolswebdriver-bidicdpchrome-devtools-protocollighthouse-12lighthouse-cipagespeed-insightscore-web-vitalsprivacy-sandboxrecorder-workflowsworkspace-devtoolsgemini-devtoolsai-assistance-chromeanimation-inspectormemory-profilerjs-profilercoverage-tabcss-overviewsource-mapslong-task-analyzerinp2026deep-diveenglish https://www.youngju.dev/blog/culture/2026-05-16-browser-devtools-deep-dive-2026-chrome-firefox-safari-edge-webdriver-bidi-cdp-lighthouse-12-ai-assistance-gemini-deep-dive.ja https://www.youngju.dev/blog/culture/2026-05-16-browser-devtools-deep-dive-2026-chrome-firefox-safari-edge-webdriver-bidi-cdp-lighthouse-12-ai-assistance-gemini-deep-dive.ja Chrome DevTools、Firefox DevTools、Safari Web Inspector、Edge DevTools、WebDriver BiDi (W3C、CDP の後継)、Chrome AI Assistance (Gemini)、Performance Insights、Recorder + Workflows、Workspace、Lighthouse 12、Lighthouse CI、PageSpeed Insights、Core Web Vitals オーバーレイ、Privacy Sandbox デバッガ、Animation Inspector、Memory + JS profiler、Coverage タブ、Network スロットリング、デバイス エミュレーション、CSS Overview、Source maps、Long task analyzer (INP)、Puppeteer / Playwright / Cypress、そして韓国・日本のフロントエンド性能エンジニアリングまで — 2026 年のブラウザ DevTools 地形図を一気にまとめる。 Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) devtoolsbrowser-devtoolschrome-devtoolsfirefox-devtoolssafari-web-inspectoredge-devtoolswebdriver-bidicdpchrome-devtools-protocollighthouse-12lighthouse-cipagespeed-insightscore-web-vitalsprivacy-sandboxrecorder-workflowsworkspace-devtoolsgemini-devtoolsai-assistance-chromeanimation-inspectormemory-profilerjs-profilercoverage-tabcss-overviewsource-mapslong-task-analyzerinp2026deep-dive日本語 https://www.youngju.dev/blog/culture/2026-05-16-browser-devtools-deep-dive-2026-chrome-firefox-safari-edge-webdriver-bidi-cdp-lighthouse-12-ai-assistance-gemini-deep-dive https://www.youngju.dev/blog/culture/2026-05-16-browser-devtools-deep-dive-2026-chrome-firefox-safari-edge-webdriver-bidi-cdp-lighthouse-12-ai-assistance-gemini-deep-dive Chrome DevTools, Firefox DevTools, Safari Web Inspector, Edge DevTools, WebDriver BiDi (W3C, CDP 후속), Chrome AI Assistance (Gemini), Performance Insights, Recorder + Workflows, Workspace, Lighthouse 12, Lighthouse CI, PageSpeed Insights, Core Web Vitals overlay, Privacy Sandbox debugger, Animation Inspector, Memory + JS profiler, Coverage tab, Network throttling, Device emulation, CSS Overview, Source maps, Long task analyzer (INP), Puppeteer / Playwright / Cypress 그리고 한국·일본 프런트엔드 성능 엔지니어링까지 — 2026년 브라우저 DevTools 지형도를 한 번에 정리한다. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) devtoolsbrowser-devtoolschrome-devtoolsfirefox-devtoolssafari-web-inspectoredge-devtoolswebdriver-bidicdpchrome-devtools-protocollighthouse-12lighthouse-cipagespeed-insightscore-web-vitalsprivacy-sandboxrecorder-workflowsworkspace-devtoolsgemini-devtoolsai-assistance-chromeanimation-inspectormemory-profilerjs-profilercoverage-tabcss-overviewsource-mapslong-task-analyzerinp2026deep-dive https://www.youngju.dev/blog/culture/2026-05-16-software-debugging-mastery-2026-gdb-lldb-rr-pernosco-pdb-chrome-devtools-bun-inspect-dap-deep-dive.en https://www.youngju.dev/blog/culture/2026-05-16-software-debugging-mastery-2026-gdb-lldb-rr-pernosco-pdb-chrome-devtools-bun-inspect-dap-deep-dive.en A May 2026 survey of the software debugging stack and the mindset behind it. Reverse and time-travel debugging with GDB 15, LLDB 19, rr, and Pernosco; Chrome DevTools 2025 with AI assistance and MCP; built-in inspectors in Bun, Deno, and Node; the pdb / pdbpp / ipdb / pudb / debugpy lineup for Python; Rust dbg! and tokio-console; Go Delve; Java JFR + JMC; eBPF with bpftrace and Pixie; Valgrind, ASan, MSan, TSan, UBSan; the DAP protocol; and AI-assisted debugging. All anchored to hypothesis-driven scientific debugging and to real field reports from Coupang, Naver, Kakao, Cookpad, Mercari, and HSAS. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) debugginggdblldbrrpernoscopdbchrome-devtoolsbundaptime-travel-debuggingreverse-debugging2026deep-diveenglish https://www.youngju.dev/blog/culture/2026-05-16-software-debugging-mastery-2026-gdb-lldb-rr-pernosco-pdb-chrome-devtools-bun-inspect-dap-deep-dive.ja https://www.youngju.dev/blog/culture/2026-05-16-software-debugging-mastery-2026-gdb-lldb-rr-pernosco-pdb-chrome-devtools-bun-inspect-dap-deep-dive.ja 2026 年 5 月時点のソフトウェアデバッグツールと方法論を一本にまとめます。GDB 15 / LLDB 19 / rr / Pernosco のリバースおよびタイムトラベルデバッグ、Chrome DevTools 2025 の AI アシストと MCP、Bun と Deno と Node のビルトインインスペクタ、Python pdb / pdbpp / ipdb / pudb / debugpy の比較、Rust dbg! と tokio-console、Go Delve、Java JFR + JMC、eBPF bpftrace と Pixie、Valgrind / ASan / MSan / TSan / UBSan、DAP プロトコル、AI デバッグまで。仮説駆動の科学的デバッグマインドセットと、クーパン / Naver / カカオ / Cookpad / Mercari / HSAS などの現場事例を軸に紹介します。 Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) debugginggdblldbrrpernoscopdbchrome-devtoolsbundaptime-travel-debuggingreverse-debugging2026deep-dive日本語 https://www.youngju.dev/blog/culture/2026-05-16-software-debugging-mastery-2026-gdb-lldb-rr-pernosco-pdb-chrome-devtools-bun-inspect-dap-deep-dive https://www.youngju.dev/blog/culture/2026-05-16-software-debugging-mastery-2026-gdb-lldb-rr-pernosco-pdb-chrome-devtools-bun-inspect-dap-deep-dive 2026년 5월 기준 소프트웨어 디버깅 도구와 방법론을 한 글에 정리합니다. GDB 15·LLDB 19·rr·Pernosco의 역방향 디버깅과 타임트래블, Chrome DevTools 2025의 AI 어시스트와 MCP, Bun과 Deno의 빌트인 inspector, Python pdb/pdbpp/ipdb/pudb 비교, Rust dbg!·tokio-console, Go Delve, Java JFR + JMC, eBPF bpftrace·Pixie, Valgrind·ASan·MSan·TSan·UBSan, DAP 프로토콜과 AI 디버깅까지 — 가설 기반(Hypothesis-Driven) 과학적 디버깅 마인드셋과 함께 실전 사례(쿠팡·네이버·카오톡·Cookpad·Mercari·HSAS) 중심으로 다룹니다. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) debugginggdblldbrrpernoscopdbchrome-devtoolsbundaptime-travel-debuggingreverse-debugging2026deep-dive