๋ณธ๋ฌธ ๋ฐ”๋กœ๊ฐ€๊ธฐ

โญ Personal_Study97

CS ๋ฉด์ ‘ ์งˆ๋ฌธ ์ •๋ฆฌ - ๋„คํŠธ์›Œํฌ ๋„คํŠธ์›Œํฌ 1. HTTP, HTTP Method, HTTPS HTTP HTTP Method GET vs POST HTTP ์ƒํƒœ ์ฝ”๋“œ HTTPS 2. ์ฟ ํ‚ค์™€ ์„ธ์…˜ ์ฟ ํ‚ค(Cookie) ์„ธ์…˜(Session) 3. DNS (Domain Name Server) 4. ์›น ๋™์ž‘ ๊ณผ์ • 5. OSI 7๊ณ„์ธต / TCP/IP 5๊ณ„์ธต 6. TCP์™€ UDP UDP(User Datagram Protocol) TCP(Transmission Control Protocol) UDP & TCP ๋น„๊ต 7. TCP 3way / 4way handshake TCP 3-way Handshake TCP 4-way Handshake 8. ๋ผ์šฐํ„ฐ / ๋ผ์šฐํŒ… ์•Œ๊ณ ๋ฆฌ์ฆ˜ ๋ผ์šฐํ„ฐ ๋ผ์šฐํŒ… ์•Œ๊ณ ๋ฆฌ์ฆ˜ Link State Algorithm Distance Vecto.. 2023. 2. 23.
CS ๋ฉด์ ‘ ์งˆ๋ฌธ ์ •๋ฆฌ - ์•Œ๊ณ ๋ฆฌ์ฆ˜ ์•Œ๊ณ ๋ฆฌ์ฆ˜ 1. ์‹œ๊ฐ„ ๋ณต์žก๋„ ์‹œ๊ฐ„ ๋ณต์žก๋„(Time Compexity) ์‹œ๊ฐ„ ๋ณต์žก๋„์˜ ์ข…๋ฅ˜ O(1): ์ƒ์ˆ˜ ์‹œ๊ฐ„ ๋ณต์žก๋„ O(N): ์„ ํ˜• ์‹œ๊ฐ„ ๋ณต์žก๋„ O(logN): ๋กœ๊ทธ ์‹œ๊ฐ„ ๋ณต์žก๋„ O(NlogN): ์„ ํ˜• ๋กœ๊ทธ ์‹œ๊ฐ„ ๋ณต์žก๋„ O(N^2) O(2^N): ์ง€์ˆ˜ ์‹œ๊ฐ„ ๋ณต์žก๋„ 2. ์ •๋ ฌ ๋ฒ„๋ธ” ์ •๋ ฌ (Bubble Sort) ์„ ํƒ ์ •๋ ฌ (Selection Sort) ์‚ฝ์ž… ์ •๋ ฌ (Insertion Sort) ํ€ต ์ •๋ ฌ (Quick Sort) ๋ณ‘ํ•ฉ ์ •๋ ฌ (Merge Sort) ๊ฐ ์ •๋ ฌ์˜ ์‹œ๊ฐ„ ๋ณต์žก๋„ 3. ์žฌ๊ท€ 4. Dynamic Programming 5. ๊ทธ๋ž˜ํ”„ ํƒ์ƒ‰ / ๋ฐฑํŠธ๋ž˜ํ‚น BFS (Breadth-First Search) DFS (Depth-First Search) BFS vs DFS 6. ๊ทธ๋ž˜ํ”„ ์‹ฌํ™” ๋ฒจ๋งŒํฌ๋“œ ์•Œ๊ณ ๋ฆฌ์ฆ˜.. 2023. 2. 19.
CS ๋ฉด์ ‘ ์งˆ๋ฌธ ์ •๋ฆฌ - ์ž๋ฃŒ๊ตฌ์กฐ ์ž๋ฃŒ๊ตฌ์กฐ 1. Array, Vector, Linked list Array(์ •์  ๋ฐฐ์—ด) Vector(๋™์  ๋ฐฐ์—ด) Linked List (์—ฐ๊ฒฐ ๋ฆฌ์ŠคํŠธ) 2. Stack, Queue Stack Queue 3. Deque 4. Priority Queue, Heap Priority Queue(์šฐ์„ ์ˆœ์œ„ ํ) Heap(ํž™) 5. Hash Hash (Function) Hash Collision HashMap / HashTable 6. Graph 7. Tree Tree Tree vs Graph ์ด์ง„ํŠธ๋ฆฌ (Binary Tree) ์ด์ง„ ํƒ์ƒ‰ ํŠธ๋ฆฌ (Binary Search Tree) ํŠธ๋ฆฌ์˜ ์ˆœํšŒ 8. Advanced Tree AVL Tree Red-Black Tree 1. Array, Vector, Linked list โœ”.. 2023. 2. 12.
CS ๋ฉด์ ‘ ์งˆ๋ฌธ ์ •๋ฆฌ - ํ”„๋กœ๊ทธ๋ž˜๋ฐ ์ผ๋ฐ˜ ํ”„๋กœ๊ทธ๋ž˜๋ฐ ์ผ๋ฐ˜ 1. ํ”„๋กœ๊ทธ๋ž˜๋ฐ ํŒจ๋Ÿฌ๋‹ค์ž„ 2. ๊ฐ์ฒด์ง€ํ–ฅ ํ”„๋กœ๊ทธ๋ž˜๋ฐ(OOP) 3. REST API 4. GIT & GITHUB 5. ๊ฐœ๋ฐœ ๋ฐฉ๋ฒ•๋ก  6. ๋””์ž์ธ ํŒจํ„ด 7. ๋น„๋™๊ธฐ ์ฒ˜๋ฆฌ 8. ํ”„๋ ˆ์ž„์›Œํฌ vs ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ 1. ํ”„๋กœ๊ทธ๋ž˜๋ฐ ํŒจ๋Ÿฌ๋‹ค์ž„ โœ” ํ”„๋กœ๊ทธ๋ž˜๋ฐ ํŒจ๋Ÿฌ๋‹ค์ž„: ํ”„๋กœ๊ทธ๋ž˜๋ฐ ์Šคํƒ€์ผ, ๊ด€์  ๋ช…๋ นํ˜• vs ์„ ์–ธํ˜• โœ” ๋ช…๋ นํ˜• ํ”„๋กœ๊ทธ๋ž˜๋ฐ: ์–ด๋–ป๊ฒŒ (How) numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] result = [] for number in numbers: if number % 2 == 0: if number % 3 == 0: result.append(number**2) print(result) ์ปดํ“จํ„ฐ๊ฐ€ ์ˆ˜ํ–‰ํ•  ๋ช…๋ น๋“ค ์ˆœ์„œ๋Œ€๋กœ ์ž‘์„ฑํ•˜๋Š” ํ˜•ํƒœ์˜ ํ”„๋กœ๊ทธ๋ž˜๋ฐ ์ œ์–ด๋ฌธ ํ™œ์šฉ ์žฅ์  ์—ฐ์‚ฐ์˜ ์ˆœ.. 2023. 2. 6.
Docker in Docker๋ฅผ ์ ์šฉํ•œ Jenkins ์„ค์น˜ํ•˜๊ธฐ Docker in Docker๋ฅผ ์ ์šฉํ•œ Jenkins ์„ค์น˜ํ•˜๊ธฐ 1. ๋„์ปค ์„ค์น˜ โœ” ํŒจํ‚ค์ง€๋“ค์ด ์ตœ์‹  ๋ฒ„์ „์ธ์ง€ ํ™•์ธ sudo apt-get update && upgrade โœ” apt๊ฐ€ HTTPS๋ฅผ ํ†ตํ•ด repository๋ฅผ ์ด์šฉํ•˜๋Š” ๊ฒƒ์„ ํ—ˆ์šฉํ•  ์ˆ˜ ์žˆ๋„๋ก ํ•ด์ฃผ๋Š” ํŒจํ‚ค์ง€๋“ค ์„ค์น˜ sudo apt-get install \ ca-certificates \ curl \ gnupg \ lsb-release โœ” docker ๊ณต์‹ GPG key ์ถ”๊ฐ€ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg โœ” docker repository๋ฅผ ๋“ฑ๋ก ech.. 2023. 1. 25.
Jenkins ํ”„๋กœ์ ํŠธ ์ƒ์„ฑ ๋ฐ CI/CD ๊ตฌ์ถ• Jenkins ํ”„๋กœ์ ํŠธ ์ƒ์„ฑ ๋ฐ CI/CD ๊ตฌ์ถ• Jenkins ๋ฉ”์ธํ™”๋ฉด์—์„œ '์ƒˆ๋กœ์šด item' ํด๋ฆญ ์ด๋ฆ„ ์ž‘์„ฑ ๋ฐ Freestyle project ์„ ํƒ ํ›„ OK ์†Œ์Šค ์ฝ”๋“œ ๊ด€๋ฆฌ > Git ์„ ํƒ ๋นŒ๋“œ ์œ ๋ฐœ > Build when a change is pushed to Gitlab. ์„ ํƒ & Secret token > Generate ์„ ํƒ ํ›„ key ๋ณต์‚ฌ Build Steps > Execute shell ์„ ํƒ ํ”„๋กœ์ ํŠธ ๋ฃจํŠธ ํด๋”๋กœ ์ด๋™ ํ›„ Dockerfile ์‹คํ–‰ํ•˜๋Š” ์‰˜ ์Šคํฌ๋ฆฝํŠธ ์ž‘์„ฑ # ํ”„๋กœ์ ํŠธ ๋ฃจํŠธ๋กœ ์ด๋™์ด ํ•„์š”ํ•œ ๊ฒฝ์šฐ cd ${PROJECT_ROOT} docker build -t ${CONTAINER_NAME} . docker run -d -p ํฌํŠธ๋ฒˆํ˜ธ:ํฌํŠธ๋ฒˆํ˜ธ ${CONTAINER_NAME} ๋นŒ๋“œ ํ›„.. 2023. 1. 25.