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java 의 λ™μ‹œμ„± μ œμ–΄

1.
Synchronized
β€’
ν•œλ²ˆμ— λ™κΈ°ν™”λœ λ©”μ„œλ“œλ‚˜ 블둝을 λ§Œλ“€ λ•Œ μ‚¬μš©
β€’
ν•œ λ²ˆμ— ν•˜λ‚˜μ˜ μŠ€λ ˆλ“œλ§Œ ν•΄λ‹Ή 블둝 μ•ˆμœΌλ‘œ μ ‘κ·Ό κ°€λŠ₯
2.
ReentrantLock
β€’
synchronized 보닀 더 μ„Έλ°€ν•œ μ„€μ • κ°€λŠ₯
β€’
λͺ…μ‹œμ μœΌλ‘œ 락을 νšλ“, 쑰건 μ œμ–΄ λ“±
3.
Atomic
a.
μ›μžμ  μ—°μ‚°
b.
CAS μ—°μ‚° 자체λ₯Ό μ›μžμ μœΌλ‘œ ν•˜μ—¬ ν•˜λ‚˜μ˜ μ“°λ ˆλ“œ(ν•¨μˆ˜λ‘œ μ‚¬μš©)μ—μ„œλ§Œ μ ‘κ·Ό κ°€λŠ₯
4.
ConcurrentHashMap
a.
전체 맡에 락을 κ±°λŠ” λŒ€μ‹  λ‚΄λΆ€μ μœΌλ‘œ 데이터λ₯Ό λΆ„ν• ν•˜μ—¬ 뢀뢄락 μ‚¬μš©
b.
읽기할 λ•Œ 락 X
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