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Technical Interview Guide for Backend Developers

์ด ์ €์žฅ์†Œ๋Š” ๋ฐฑ์—”๋“œ ๊ฐœ๋ฐœ์ž๋ฅผ ์œ„ํ•œ ๊ธฐ์ˆ  ๋ฉด์ ‘ ๊ฐ€์ด๋“œ๋ฅผ ์ œ๊ณตํ•ฉ๋‹ˆ๋‹ค. ์‹ค์ œ ๊ธฐ์—…์˜ ๋ฉด์ ‘ ์งˆ๋ฌธ๊ณผ ๋ชจ๋ฒ” ๋‹ต์•ˆ, ๊ทธ๋ฆฌ๊ณ  ๊ฐ๊ฐ์˜ ๋‹ต๋ณ€์— ๋Œ€ํ•œ ์ฐธ๊ณ  ์ž๋ฃŒ๋“ค์„ ํฌํ•จํ•˜๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค.

๋ชฉ์ฐจ

1. Database

2. Operating System

3. Network

4. Container & Orchestration

5. Java & Spring

5.1 JVM Architecture & Memory

5.2 JVM Performance

  • JIT ์ปดํŒŒ์ผ๋Ÿฌ
    • Interpretation vs JIT Compilation
    • Hot Spot Detection
    • Optimization Techniques
    • CPU Profiling
    • Memory Profiling
    • Thread Dump ๋ถ„์„
    • Object Pool
    • String Interning
    • Escape Analysis

5. ์‹œ์Šคํ…œ ๋””์ž์ธ

7. Security (๋ณด์•ˆ)

๊ธฐ์—ฌ ๋ฐฉ๋ฒ•

์ด ํ”„๋กœ์ ํŠธ๋Š” ๊ฐœ๋ฐœ์ž ์ปค๋ฎค๋‹ˆํ‹ฐ์˜ ๊ธฐ์—ฌ๋ฅผ ํ™˜์˜ํ•ฉ๋‹ˆ๋‹ค. ๋‹ค์Œ๊ณผ ๊ฐ™์€ ๋ฐฉ๋ฒ•์œผ๋กœ ๊ธฐ์—ฌํ•˜์‹ค ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค:

  1. Issue ๋“ฑ๋ก

    • ์˜คํƒ€ ๋˜๋Š” ์ž˜๋ชป๋œ ์ •๋ณด ์ œ๋ณด
    • ์ƒˆ๋กœ์šด ์ฃผ์ œ ์ œ์•ˆ
    • ์งˆ๋ฌธ ๋˜๋Š” ํ† ๋ก  ์ฃผ์ œ ์ œ์‹œ
  2. Pull Request

    • ์ƒˆ๋กœ์šด ๊ธฐ์ˆ  ๋ฉด์ ‘ ์งˆ๋ฌธ๊ณผ ๋‹ต๋ณ€ ์ถ”๊ฐ€
    • ๊ธฐ์กด ๋‚ด์šฉ์˜ ๊ฐœ์„  ๋˜๋Š” ์ˆ˜์ •
    • ์ƒˆ๋กœ์šด ์นดํ…Œ๊ณ ๋ฆฌ ์ถ”๊ฐ€

์ฐธ๊ณ  ์ž๋ฃŒ ํ˜•์‹

๊ฐ ๋ฌธ์„œ๋Š” ๋‹ค์Œ ํ˜•์‹์„ ๋”ฐ๋ฆ…๋‹ˆ๋‹ค:

# ์ฃผ์ œ๋ช…

## ์งˆ๋ฌธ

[์‹ค์ œ ๋ฉด์ ‘ ์งˆ๋ฌธ]

## ๋‹ต๋ณ€

[๋ชจ๋ฒ” ๋‹ต์•ˆ]

## ์‹ฌํ™” ์งˆ๋ฌธ

[์˜ˆ์ƒ๋˜๋Š” ์ถ”๊ฐ€ ์งˆ๋ฌธ๋“ค]

## ์ฐธ๊ณ  ์ž๋ฃŒ

[๊ณต์‹ ๋ฌธ์„œ, ๋ธ”๋กœ๊ทธ, ๋…ผ๋ฌธ ๋“ฑ ์ฐธ๊ณ  ์ž๋ฃŒ ๋งํฌ]

๊ธฐ์—ฌ์ž

์Šคํƒ€ ํžˆ์Šคํ† ๋ฆฌ

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๐Ÿš€ ๋ฐฑ์—”๋“œ ๊ฐœ๋ฐœ์ž๋ฅผ ์œ„ํ•œ ๊ธฐ์ˆ  ๋ฉด์ ‘ ๊ฐ€์ด๋“œ: ์‹œ์Šคํ…œ ์„ค๊ณ„๋ถ€ํ„ฐ CS๊นŒ์ง€ ๐Ÿ’ก

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