RESEARCH LAB ยท SEOUL ยท 2026

SLOW.DEEP,SHARE.

Slides and long-form research notes by yceffort โ€” deep dives into the frontend stack, presented one slide at a time.

19 slides

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#nodejs#web#performance

OG ์Šคํฌ๋ž˜ํ•‘ ์„œ๋ฒ„๋ฅผ Node.js๋กœ ์ง“๋Š”๋‹ค๋ฉด 1๋ถ€: ๋Ÿฐํƒ€์ž„ ์„ ํƒ๋ถ€ํ„ฐ ์—๋Ÿฌ์œจ๊ณผ ์ง€์—ฐ๊นŒ์ง€

๋งํฌ ๋ฏธ๋ฆฌ๋ณด๊ธฐ๋Š” ์™œ ํƒœ์ƒ์ ์œผ๋กœ ์‹คํŒจ์œจ์ด ๋†’์€๊ฐ€๋ถ€ํ„ฐ, ๋Ÿฐํƒ€์ž„ ์„ ํƒ์ด ๊ฐˆ๋ฆฌ๋Š” ๋„ค ์ง€์ , User-Agent์™€ ์ธ์ฝ”๋”ฉ, ์บ์‹œ ์Šคํƒฌํ”ผ๋“œ, ํžˆํŠธ์œจ ์—ญ์‚ฐ๊นŒ์ง€

82 slides๐Ÿ“– ๋ธ”๋กœ๊ทธ ๊ธ€
#nodejs#security#ssrf

OG ์Šคํฌ๋ž˜ํ•‘ ์„œ๋ฒ„๋ฅผ Node.js๋กœ ์ง“๋Š”๋‹ค๋ฉด 2๋ถ€: SSRF๋Š” ์–ด๋–ป๊ฒŒ ๋šซ๋ฆฌ๋Š”๊ฐ€

์‚ฌ์šฉ์ž๊ฐ€ ์ค€ URL์„ ์„œ๋ฒ„๊ฐ€ ๋Œ€์‹  ์—ฌ๋Š” ์ผ์˜ ์œ„ํ—˜, ํ™”์ดํŠธ๋ฆฌ์ŠคํŠธ๋ฅผ ๋šซ๋Š” ์šฐํšŒ ์—ฌ์„ฏ ๊ฐ€์ง€์™€ ๊ทธ๊ฒƒ์„ ๋ง‰๋Š” ๋ฐฉ์–ด ์›๋ฆฌ ๋‹ค์„ฏ ๊ฐœ

56 slides๐Ÿ“– ๋ธ”๋กœ๊ทธ ๊ธ€
#react#react-query#tanstack-query

react-query ๋”ฅ๋‹ค์ด๋ธŒ 1๋ถ€: ์‚ฌ์šฉ๋ฒ•๊ณผ ์บ์‹œ์˜ ์ƒ๋ช…์ฃผ๊ธฐ

์„œ๋ฒ„ ์ƒํƒœ๋ผ๋Š” ๋ฌธ์ œ, useQuery์˜ ์ƒํƒœ ๋ชจ๋ธ, staleTime๊ณผ gcTime โ€” ์บ์‹œ ํ•ญ๋ชฉ์˜ ์ผ์ƒ์„ ๋”ฐ๋ผ๊ฐ€๋Š” react-query ๊ฐ•์˜ 1๋ถ€

60 slides
#react#react-query#tanstack-query

react-query ๋”ฅ๋‹ค์ด๋ธŒ 2๋ถ€: ๋‚ด๋ถ€ ๋™์ž‘, ์‹ค์ „ ํ•จ์ •, SSR

QueryObserver ๊ตฌ๋… ๋ชจ๋ธ, structural sharing, HydrationBoundary โ€” ๋‚ด๋ถ€ ๋™์ž‘์—์„œ ์‹ค์ „ ํ•จ์ •, SSR๊นŒ์ง€ react-query ๊ฐ•์˜ 2๋ถ€

71 slides
#javascript#promise#async

Promise ๋”ฅ๋‹ค์ด๋ธŒ: ๋™์ž‘ ์›๋ฆฌ์™€ ์‹คํ–‰ ์ˆœ์„œ

์ƒํƒœ ๋จธ์‹ , ๋งˆ์ดํฌ๋กœํƒœ์Šคํฌ, ์ฒด์ด๋‹, ์กฐํ•ฉ๊ธฐ, ์—๋Ÿฌ ์ฒ˜๋ฆฌ โ€” Promise์˜ ๋™์ž‘ ์›๋ฆฌ ์ •๋ฆฌ์™€ ์‹คํ–‰ ์ˆœ์„œ ํ€ด์ฆˆ

78 slides
#sentry#error-monitoring#frontend

Sentry ๋”ฅ๋‹ค์ด๋ธŒ 2๋ถ€: ์„œ๋ฒ„์—์„œ ์ด์Šˆ๊นŒ์ง€

Relay ํŒŒ์ดํ”„๋ผ์ธ๋ถ€ํ„ฐ Debug ID, ๊ทธ๋ฃจํ•‘ ํ•ด์‹œ, ์šด์˜ ๊ทœ์น™๊นŒ์ง€ โ€” ์„œ๋ฒ„์— ๋„์ฐฉํ•œ ์ด๋ฒคํŠธ๊ฐ€ ์ด์Šˆ๊ฐ€ ๋˜๋Š” ๊ณผ์ •

38 slides