So Hee Park Lee

Operating System/ thread/ CPU process

๐Ÿ‘ฟ ์ปดํ“จํ„ฐ์˜ ๊ณ ์งˆ์ ์ธ ๋ฌธ์ œ (1) ์ €์žฅ๊ณต๊ฐ„ ๋ฌธ์ œ ์–ธ์ œ: RAM, DISK ์šฉ๋Ÿ‰ ๋ถ€์กฑ ๋ฌธ์ œ: ์„ฑ๋Šฅ ์ €ํ•˜, ๋ฐ์ดํ„ฐ ์œ ์‹ค (2) ์˜ค๋ฒ„ ํด๋ฝ ์–ธ์ œ: CPU, RAM ๊ณผ๋‹ค ์‚ฌ์šฉ(์—ฌ๋Ÿฌ๊ฐœ์˜ ๋ฌด๊ฑฐ์šด ํ”„๋กœ๊ทธ๋žจ์„ ํ•œ ๋ฒˆ์— ๋Œ๋ฆฌ๋ฉด) ๋ฌธ์ œ: ์ˆ˜๋ช… ๋‹จ์ถ•, ์‹œ์Šคํ…œ ์ถฉ๋Œ (3) ์˜ค๋ฒ„ ํžˆํŒ… ์–ธ์ œ: CPU, RAM ๋ฌธ์ œ: CPU์— ์—ด์„ ๋ฐœ์ƒ...

What does a backend programmer do?

โœ… ๋ฐฑ์—”๋“œ์˜ ์ฃผ์š” ์—…๋ฌด ์ฃผ๋ฌธ์—…๋ฌด ๋น„์ฆˆ๋‹ˆ์Šค ์š”๊ตฌ ์„ค๊ณ„ ๋ฐ ๊ตฌํ˜„(๊ณ ๊ฐ ์š”๊ตฌ์‚ฌํ•ญ ํ™•์ธ) ํ•„ํ„ฐ๋ง ์˜ˆ์™ธ ์ฒ˜๋ฆฌ(๊ณ ๊ฐ 1์ฐจ ๋Œ€์‘, ์œ„ํ—˜ ์ง€์—ญ ๊ฐ™์€ ๊ฒฝ์šฐ ์„œ๋ฒ„์—์„œ ์ฐจ๋‹จํ•ด๋ฒ„๋ฆผ) ๋ฌธ์ œ: ๋Œ€์šฉ๋Ÿ‰ ํŠธ๋ž˜ํ”ฝ ๋ถ€ํ•˜ ๋ฌธ์ œ, ํŠธ๋ž˜ํ”ฝ์ด ๋ชฐ๋ฆผ(๊ณ ๊ฐ ์ฃผ๋ฌธ์ด ํ•œ๊บผ๋ฒˆ์— ๋ชฐ๋ ค์„œ ๊ณ ๊ฐ์ด ๋Œ€๊ธฐํ•ด์•ผ ํ•˜๋Š” ๊ฒฝ์šฐ) ํ•ด๊ฒฐ: ์„œ๋ฒ„ ๊ตฌํ˜„ ๊ธฐ์ˆ :๋น„์ฆˆ๋‹ˆ์Šค ์š”๊ตฌ ์„ค๊ณ„: Spring Boo...

JDK_JRE_JVM

โœ… JAVA compile ์–ธ์–ด ์†Œ์Šค์ฝ”๊ทธ๋ฅผ ๋ชฉ์ ์ฝ”๋“œ๋กœ ์˜ฎ๊ธฐ๋Š” ๊ฒƒ (์—ฌ๊ธฐ์„œ ๋งํ•˜๋Š” ๋ชฉ์ ์ฝ”๋“œ๋Š” ์ปดํŒŒ์ผ๋Ÿฌ๋‚˜ ์†Œ์Šค์ฝ”๋“œ ํŒŒ์ผ์„ ์ปดํŒŒ์ผ ํ•ด์„œ ์ƒ์„ฑํ•˜๋Š” ํŒŒ์ผ) ์ธ๊ฐ„์ด ๊ฐœ๋ฐœ๋„๊ตฌ๋กœ ์™„์„ฑํ•œ ์ฝ”๋“œ๋ฅผ ์ปดํŒŒ์ผํ•ด์„œ ์šด์˜์ฒด๊ฒŒ๊ฐ€ ์ดํ•ด ๊ฐ€๋Šฅํ•œ ํ”„๋กœ๊ทธ๋žจ ์–ธ์–ด๋กœ ๋ฐ”๊ฟ”์คŒ, ์ด๋ฅผ ๋˜ ์ปดํ“จํ„ฐ ํ•˜๋“œ์›จ์–ด์— ์ „๋‹ฌ compiler: ๋ฒˆ์—ญ๊ธฐ, ํŠน์ • ํ”„๋กœ๊ทธ๋ž˜๋ฐ ์–ธ์–ด๋ฅผ ๋‹ค๋ฅธ ์–ธ์–ด...

SOAP, REST

โœ… SOA Service Oriented Architecture ์„œ๋น„์Šค ์ง€ํ–ฅ Architecture ์—…๋ฌด์ƒ์˜ ์ผ ๐ŸŸฐ ์†Œํ”„ํŠธ์›จ์–ด ๊ธฐ๋Šฅ ๐ŸŸฐ ์„œ๋น„์Šค ์„œ๋น„์Šค๋ฅผ ๋„คํŠธ์›Œํฌ ์ƒ์— ์—ฐ๋™, ์‹œ์Šคํ…œ ๊ตฌ์ถ• โœ… SOAP Simple Object Access Protocol exchange structured information over...

Framework ๐Ÿ†š Library

Framework VS Library โ˜‘๏ธ Framework ํด๋ž˜์Šค + ์ธํ„ฐํŽ˜์ด์Šค์˜ ์ง‘ํ•ฉ framework is already fixed how to use ์• ํ”Œ๋ฆฌ์ผ€์ด์…˜ ์ฝ”๋“œ๊ฐ€ ํ”„๋ ˆ์ž„์›Œํฌ์— ์˜ํ•ด ์‚ฌ์šฉ, ๊ฒฐ์ •๋œ๋‹ค. ํ”„๋ ˆ์ž„์›Œํฌ์— ๋”ฐ๋ผ ์‚ฌ์šฉ์ž๊ฐ€ ๊ทธ ์•ˆ์— ํ•„์š”ํ•œ ์ฝ”๋“œ ์ž‘์„ฑ ์•ฑ/์„œ๋ฒ„ ๊ตฌ๋™ ๋ฉ”๋ชจ๋ฆฌ ๊ด€๋ฆฌ ์ด๋ฒคํŠธ ๋ฃจํ”„ ์†Œํ”„ํŠธ์›จ์–ด์˜ ์„ค๊ณ„...

์Šˆํผ์ฝ”๋”ฉ ์›น๊ฐœ๋ฐœ ๋ถ€ํŠธ์บ ํ”„ 3์ฃผ์ฐจ ์‹ ์ž…์—ฐ์ˆ˜์› ํ›„๊ธฐ

โœ… This weeks achievements_์ด๋ฒˆ ์ฃผ ๋ชฉํ‘œ ๋‹ฌ์„ฑ ์—ฌ๋ถ€ What I learned_์•Œ๊ฒŒ๋œ ์  I renewed my carrot app using Svelte, Vite and Firebase. These tools made it easy to bundle, dpeloy and add a server to my App. Such u...

CISCO_PART2_๋„คํŠธ์›Œํฌ์™€ ์ผ€์ด๋ธ”, ๊ทธ๋ฆฌ๊ณ  ์นœ๊ตฌ๋“ค

1๏ธโƒฃ LAN(Local Area Network)์ด๋ž€? โœ… LAN ํ•œ์ •๋œ ์ง€์—ญ ์•ˆ์—์„œ์˜ ๋„คํŠธ์›Œํฌ ๊ตฌ์ถ• โœ… WAN(Wide Area Network) ์„œ๋กœ ๋ฉ€๋ฆฌ ๋–จ์–ด์ง„ ๊ณณ์„ ๋„คํŠธ์›Œํฌ๋กœ ์—ฐ๊ฒฐํ•˜๋Š” ๊ฒƒ 2๏ธโƒฃ ์ด๋”๋„ท์€ ์ธํ„ฐ๋„ท์˜ ์นœ๊ตฌ? โœ… ๋„คํŠธ์›Œํ‚น ๋ฐฉ์‹(๋„คํŠธ์›Œํฌ๋ฅผ ๋งŒ๋“œ๋Š” ๋ฐฉ์‹) ์ด๋”๋„ท ๋ฐฉ์‹ ํ† ํฐ๋ง ๋ฐฉ์‹ FDDI ๋ฐฉ์‹ ATM ๋ฐฉ์‹โ€ฆ...

CISCO_PART1_๋„คํŠธ์›Œํฌ ์„ธ์ƒ์— ๋“ค์–ด์„œ๋ฉฐ

3๏ธโƒฃ ๋„คํŠธ์›Œํ‚น Networking ์žฅ๋น„๋“ค์„ ์„œ๋กœ ํ†ต์‹ ์ด ๊ฐ€๋Šฅํ•˜๋„๋ก ๋ฌถ์–ด์ฃผ๋Š” ๊ฒƒ 4๏ธโƒฃ ์ธํ„ฐ๋„ท, ์ธํŠธ๋ผ๋„ท, ์—‘์ŠคํŠธ๋ผ๋„ท โ˜‘๏ธ ์ธํ„ฐ๋„ท Internet ์—ฌ๋Ÿฌ ๊ฐœ์˜ ๋„คํŠธ์›Œํฌ๋ฅผ ๋ฌถ์€ ๋„คํŠธ์›Œํฌ ์—ฐํ•ฉ WWW: world wide web ํ•˜๋‚˜์˜ ํ”„๋กœํ† ์ฝœTCP/IP ๋งŒ์„ ์‚ฌ์šฉํ•œ๋‹ค. ์ฃผ๋กœ ์›น ๋ธŒ๋ผ์šฐ์ €๋ฅผ ์ด์šฉํ•ด์„œ ์ธํ„ฐ๋„ท์„ ํƒํ—˜ํ•œ๋‹ค. (์ต์Šคํ”Œ๋กœ๋Ÿฌ, ํฌ...