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๐Ÿฃ ์‹ ์ž… [0-2 years] ์ฃผ๋กœ ๋ฐ์ดํ„ฐ ๊ตฌ์กฐ์™€ ์•Œ๊ณ ๋ฆฌ์ฆ˜์— ์ค‘์ ์„ ๋‘” CS(Computer Science) ๊ธฐ์ดˆ์— ๋Œ€ํ•ด ์งˆ๋ฌธ์„ ๋ฐ›์Šต๋‹ˆ๋‹ค. - ๋ฐ์ดํ„ฐ ๊ตฌ์กฐ์™€ ์•Œ๊ณ ๋ฆฌ์ฆ˜ (70-80%) Sorting Searching Linked List Array Tree Graph Stack Queue Depth First Search Breath First Search Shortest Path String Manipulation Binary Search Backtracking Recursion Dynamic Programming Time complexity analysis Matrix calculation - ๊ธฐํƒ€ CS (20-30%) OOPS Operating System DBMS Networking ๐Ÿค ์ฃผ๋‹ˆ์–ด [3-8 years] ์‹ ์ž…์— ๋น„ํ•ด ๋” ๋งŽ์€ ์‹ค๋ฌด ์ง€์‹์„ ์š”๊ตฌ ๋ฐ›์Šต๋‹ˆ๋‹ค. ๊ณ ๊ธ‰ ์•Œ๊ณ ๋ฆฌ์ฆ˜๊ณผ ๋ฐ์ดํ„ฐ ๊ตฌ์กฐ, ํ˜น์€ ์‹ค๋ฌด์—์„œ์˜ ์ž‘๋™ ๋ฐฉ์‹๊ณผ ํ™•์žฅ ๊ฐ€๋Šฅํ•œ ์‹œ์Šคํ…œ์— ๋Œ€ํ•œ ์ดํ•ด๋ฅผ ํ‰๊ฐ€ํ•ฉ๋‹ˆ๋‹ค. - ๋ฐ์ดํ„ฐ ๊ตฌ์กฐ์™€ ์•Œ๊ณ ๋ฆฌ์ฆ˜ (40-50%) Dynamic Programming Binary Search HashMap and HashSet Topological Sort Heap and Priority Queue Trie Suffix Array KMP and Rabin Karp Minimum Spanning Trees Binary indexed tree Segment Tree Tree Traversal Shortest path with priority queue - ๋””์ž์ธ ํŒจํ„ด๊ณผ ์‹œ์Šคํ…œ ๊ตฌํ˜„ (20-30%) Design Patterns Other programming principles - ์‹œ์Šคํ…œ ์„ค๊ณ„ (20-30%) URL Shortening, Twitter timeline etc Hashing, caching, NoSQL Internals etc ๐Ÿ” ์‹œ๋‹ˆ์–ด [8+ years] ์‹œ์Šคํ…œ์„ ์™„๋ฒฝํ•˜๊ฒŒ ์ดํ•ดํ•˜๊ณ  ํ™•์žฅ ๊ฐ€๋Šฅํ•œ ์‹œ์Šคํ…œ์— ๋Œ€ํ•œ ์‹ค์ œ ๊ฒฝํ—˜์ด ์žˆ์–ด์•ผ ํ•ฉ๋‹ˆ๋‹ค. - ์‹œ์Šคํ…œ ์„ค๊ณ„์™€ ์•„ํ‚คํ…์ฒ˜ ํŒจํ„ด (50-60%) Monolithic,Micro Services etc Docker/Kubernetes, Redis, Kafka, Cassandra, Elastic Search, Spark etc Thread safe rate limiting API, Horizontal/Vertical Scaling etc MD5, SHA 256, CDN, Load Balancing, Caching etc. - ํ”„๋กœ๊ทธ๋ž˜๋ฐ ์›์น™๊ณผ ์†Œํ”„ํŠธ์›จ์–ด ์„ค๊ณ„ (20-30%) Design Patterns SOLID Principles, DRY, KISS, YAGNI etc Test driven development coding and testing best practices code review standards. - ์ž๋ฃŒ ๊ตฌ์กฐ์™€ ์•Œ๊ณ ๋ฆฌ์ฆ˜ (10-20%) Trie AVL / Red Black Tree Disjoint Set Union Bit Manipulation Dynamic Programming Lazy Propagation Graph Algorithms

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