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๋Œ€๊ทœ๋ชจ ์„œ๋น„์Šค๋ฅผ ์„ค๊ณ„ํ•˜๋Š” ๊ธฐ์ˆ 
- ์ค‘๊ธ‰(์ผ๋ฐ˜ํŽธ)
๊ฐ•๋Œ€๋ช…(charsyam@naver.com)
๋ฐœํ‘œ์ž ์†Œ๊ฐœ
โ— ์˜คํ”ˆ ํ”„๋ก ํ‹ฐ์–ด 5๊ธฐ ํŒŒํŠธํƒ€์ž„(ํ˜„)
โ— Data Engineer at Udemy(ํ˜„)
โ— Software Engineer at Kakao(์นด์นด์˜ค ์Šคํ† ๋ฆฌ)
โ— Software Engineer at Naver(๋„ค์ด๋ฒ„ ๋ฉ”์ผ)
โ— Software Engineer at Finaldata
๋ฐฐํ‹€๊ทธ๋ผ์šด๋“œ
Facebook
๋Œ€์šฉ๋Ÿ‰ ์„œ๋น„์Šค ์„ค๊ณ„ ๋ฐฉ๋ฒ•
โ— SPOF ์ œ๊ฑฐ
โ— ์˜ค๋ธŒ์ ํŠธ ์Šคํ† ์–ด
โ— ๋ฐ์ดํ„ฐ ์ƒค๋”ฉ
โ— ์ฝ”๋””๋„ค์ดํ„ฐ
โ— Circuit Breaker
โ— ๋ธ”๋ฃจ/๊ทธ๋ฆฐ ๋ฐฐํฌ, ์นด๋‚˜๋ฆฌ ๋ฐฐํฌ
โ— Feature Flag(Switch)
SPOF
SPOF
Single Point Of
Failure
SPOF
์—ฌ๊ธฐ๊ฐ€ ์ฃฝ์œผ๋ฉดโ€ฆ
๋‹ค ์ฃฝ์Šต๋‹ˆ๋‹ค.
์ด๋Ÿฐ ๊ตฌ์กฐ๋ผ๋ฉด!!!
Web Browser
Mobile Apps
API Server DB
์ด๋Ÿฐ ๊ตฌ์กฐ๋ผ๋ฉด!!!
Web Browser
Mobile Apps
API Server DB
API Server ๊ฐ€ ์ฃฝ์œผ๋ฉด?
Web Browser
Mobile Apps
API Server DB
DB ๊ฐ€ ์ฃฝ์œผ๋ฉด?
Web Browser
Mobile Apps
API Server DB
๊ทธ๋ž˜์„œ ๋ณดํ†ต ์ด๋Ÿฐ ๊ตฌ์กฐ
Web Browser
Mobile Apps
API Server 1
API Server 2
DB
Primary
DB
Secondary
API Server ๊ฐ€ ์ฃฝ์–ด๋„?
Web Browser
Mobile Apps
API Server 1
API Server 2
DB
Primary
DB
Secondary
DB ๊ฐ€ ์ฃฝ์–ด๋„?
Web Browser
Mobile Apps
API Server 1
API Server 2
DB
Primary
DB
Secondary
DB ๊ฐ€ ์ฃฝ์–ด๋„?
Web Browser
Mobile Apps
API Server 1
API Server 2
DB
Primary
DB
Primary
SPOF
SPOF๋ฅผ ์—†์• ๋Š”
๊ฒƒ์ด ๊ด€๊ฑด!!!
๊ทธ๋ž˜๋„ ์„œ๋ฒ„๊ฐ€ ๋ฌผ๋ฆฌ ์„œ๋ฒ„ ํ•œ๋Œ€๋ฉด
DB
Primary
API Server 1
Web Browser
Mobile Apps
API Server 2
DB
Secondary
๊ทธ๋ž˜๋„ ์„œ๋ฒ„๊ฐ€ ๋ฌผ๋ฆฌ ์„œ๋ฒ„ ํ•œ๋Œ€๋ฉด
DB
Primary
API Server 1
Web Browser
Mobile Apps
API Server 2
DB
Secondary
Object
Storage
Object Storage
์ด๋ฏธ์ง€๋‚˜ ๋™์˜์ƒ์„
์–ด๋–ป๊ฒŒ ๊ด€๋ฆฌํ•ด์•ผ ํ• ๊นŒ์š”?
Object Storage
NAS๋‚˜
์„œ๋ฒ„ ํ•œ๋Œ€์—์„œ
์ž์ฒด ๊ด€๋ฆฌ
์ž์ฒด ๊ด€๋ฆฌํ•˜๋ฉด ์„œ๋ฒ„๊ฐ€ ์—ฌ๋Ÿฌ๋Œ€์ผ๋•Œ...
Image 2๋Š” ์–ด๋””์„œ ์ฐพ์•„์•ผ ํ• ๊นŒ?
Web Browser
Mobile Apps
API Server 1
API Server 2 File Server
Image 2
Image 9
Image 3
File Server
Image 1
Image 10
Image 4
์ž์ฒด ๊ด€๋ฆฌ ๋ฐฉ์‹์˜ ๋ฌธ์ œ์ 
โ— ๋””์Šคํฌ ๋“ฑ์˜ ์ฆ์„ค ์‹œ๊ธฐ๋ฅผ ๋งž์ถ”๊ธฐ๊ฐ€ ์–ด๋ ต๋‹ค.
โ— ๋ฐ์ดํ„ฐ ์œ ์‹ค ํ™•๋ฅ ์ด ๋†’๋‹ค.
โ— Object Store ํ˜•ํƒœ๋กœ ๊ฐˆ๋ ค๋ฉด, ๊ตฌํ˜„ํ•˜๊ธฐ๊ฐ€ ์–ด๋ ค์›€.
โ—‹ ํฐ ํšŒ์‚ฌ๋“ค์€ ๋Œ€๋ถ€๋ถ„ ์ž์ฒด ๊ตฌํ˜„ํ•ด์„œ ์”€.
3๊ฐœ์˜ ๋ณต์ œ๋ณธ
Data Loss : ๋ณดํ†ต 3๊ฐœ์˜ ๋ณต์ œ๋ณธ์„ ๋‘๋ฉด 99.999% ๋ณด
์žฅ
๋ณด์žฅ์œจ ๋ณต์ œ ๊ฐœ์ˆ˜
99.99% 2
99.999% 3
Object Store ์˜ ์—ญํ• 
โ— ์ด๋ฏธ์ง€ ๋“ฑ์˜ ํŒŒ์ผ(์˜ค๋ธŒ์ ํŠธ)๋ฅผ ์ €์žฅํ•จ.
โ— ๋‚ด๋ถ€์ ์œผ๋กœ ๋ณต์ œ๋ณธ์ด ์ƒ๊ฒจ์„œ ์œ ์‹ค์˜ ๊ฐ€๋Šฅ์„ฑ์ด ์ ์Œ
โ—‹ ์‚ฌ๋žŒ์ด ์‹ค์ˆ˜๋กœ ์ง€์šธ๋•Œ๋Š”โ€ฆ(S3๋Š” Versioning์„ ์ง€์›)
โ— ์Šคํ† ๋ฆฌ์ง€์˜ ์‚ฌ์ด์ง•, ์žฅ์• ๋“ฑ์— ๋Œ€ํ•œ ๊ณ ๋ฏผ์ด ์ ์–ด์ง.
Object Store
์ž˜ ๋™์ž‘ํ•˜๋Š” ์˜ค๋ธŒ์ ํŠธ ์Šคํ† ์–ด๋ฅผ
๋งŒ๋“ค๊ธฐ๋Š” ์‰ฝ์ง€ ์•Š์Šต๋‹ˆ๋‹ค.
์žˆ๋Š” ๊ฑธ ์ž˜ ์”์‹œ๋‹ค.(AWS S3)
์™ธ๋ถ€ ์„œ๋น„์Šค ํ˜•ํƒœ๋กœ ์ด์šฉ์ด ํŽธํ•˜๋‹ค.
Web Browser
Mobile Apps
API Server 1
API Server 2
Object
Storage
๋ฐ์ดํ„ฐ ์ƒค๋”ฉ
๋ฐ์ดํ„ฐ ์ƒค๋”ฉ
ํ•„์š”ํ•œ ๋ฉ”ํƒ€ ์ •๋ณด๋“ค์ด
์—„์ฒญ๋‚˜๊ฒŒ ๊ฑฐ๋Œ€ํ•˜๋‹ค๋ฉด?
๋ฐ์ดํ„ฐ ์ƒค๋”ฉ
๋ฐ์ดํ„ฐ ์ƒค๋”ฉ
๋ฐ์ดํ„ฐ๋ฅผ ์–ด๋–ป๊ฒŒ ๋‚˜๋ˆ„๊ณ 
์ฐพ์„๊ฒƒ์ธ๊ฐ€?
๋‹ค์Œ ๋ฐ์ดํ„ฐ๋ฅผ ๋‘ ๊ฐœ๋กœ ๋‚˜๋ˆ„๋ฉด ์–ด๋–ป๊ฒŒ ํ•ด์•ผ ํ• ๊นŒ์š”?
1
2
3
4
5
๋‘ ๊ฐœ๋กœ ๋‚˜๋ˆ„๊ธฐ
1
2
3
4
5
์•„๋ฌด๋ ‡๊ฒŒ๋‚˜?
1 2
3
4
5
์ด๋Ÿฌ๋ฉด ๊ฐ ์ˆซ์ž๊ฐ€ ์–ด๋””์—
์žˆ๋Š”์ง€ ์•Œ ์ˆ˜๊ฐ€ ์—†์Šต๋‹ˆ๋‹ค.
์–ด๋””์— ์žˆ๋Š”์ง€๋ฅผ ๋ชจ๋ฅด๋ฉด
์ „์ฒด๋ฅผ ์ฐพ์•„์•ผ ํ•ฉ๋‹ˆ๋‹ค.
์ „์ฒด๋ฅผ ์ฐพ๊ฒŒ ๋˜๋ฉด
๋ชจ๋“  ๋…ธ๋“œ์— ๋งค๋ฒˆ
๋ถ€ํ•˜๋ฅผ ์ฃผ๊ฒŒ๋ฉ๋‹ˆ๋‹ค.
๋ฐ์ดํ„ฐ๋ฅผ ๋‚˜๋ˆ„๋Š” ๊ธฐ์ค€,
๊ทœ์น™์ด ํ•„์š”ํ•ฉ๋‹ˆ๋‹ค.
ํ•œ ๊ตฐ๋ฐ๋กœ ๋ชฐ๊ธฐ
1
2
3
4
5
์ˆœ์„œ๋Œ€๋กœ
1
2
3
4
5
2๋กœ ๋‚˜๋ˆ ์„œ ๋‚˜๋จธ์ง€๊ฐ€ 1์ด๋ฉด ์•ž์—, 0์ด๋ฉด ๋’ค์—
1 2
3 4
5
์—ฌ๊ธฐ์„œ ์„œ๋ฒ„ ์ˆ˜๊ฐ€ ๋ณ€ํ•˜๋ฉด
์–ด๋–ป๊ฒŒ ๋ ๊นŒ์š”?
2๋กœ ๋‚˜๋ˆ„๋Š”๊ฒŒ ์•„๋‹ˆ๋ผ 3์œผ๋กœ ๋‚˜๋ˆ ์•ผ ํ•˜๋ฉด?
1 2
3 4
5 6
7 8
2๋กœ ๋‚˜๋ˆ„๋Š”๊ฒŒ ์•„๋‹ˆ๋ผ 3์œผ๋กœ ๋‚˜๋ˆ ์•ผ ํ•˜๋ฉด?
5
1 2 3
4 6
7 8
๋งŽ์€ ์ˆ˜์˜ ๋ฐ์ดํ„ฐ๊ฐ€
์ด๋™์„ ํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.
๊ทธ๋Ÿฐ๋ฐ
์–ด๋””๋กœ ์ด๋™ํ• ์ง€ ๋ชจ๋ฆ…๋‹ˆ๋‹ค.
๋ชจ๋“ˆ๋Ÿฌ๋Š” 2^N ์œผ๋กœ ์ฆ๊ฐ€ํ•˜๋Š”๊ฒŒ ์ข‹์Šต๋‹ˆ๋‹ค.
1 2 3 4
5 6 7 8
2^N์œผ๋กœ ์ฆ๊ฐ€ํ•˜๋ฉด ์ด๋™ํ•˜๋Š” ์„œ๋ฒ„๊ฐ€ ๊ณ ์ •๋ฉ๋‹ˆ๋‹ค.
1 2 3 4
5 6 7 8
ํ™•์žฅ์— ๋ฐ์ดํ„ฐ๊ฐ€ ์ ๊ฒŒ
์›€์ง์ด๋Š” ๋ฐฉ๋ฒ•์„
์—ฐ๊ตฌํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.
์ฝ”๋””๋„ค์ดํ„ฐ
์ฝ”๋””๋„ค์ดํ„ฐ
์ถ”๊ฐ€๋˜๊ณ  ์‚ญ์ œ๋˜๋Š”
์„œ๋ฒ„ ๋ชฉ๋ก์„ ์–ด๋–ป๊ฒŒ ๊ด€๋ฆฌํ•  ๊ฒƒ์ธ๊ฐ€?
์ฝ”๋””๋„ค์ดํ„ฐ
์„œ๋ฒ„์˜ ์ถ”๊ฐ€ ์‚ญ์ œ์‹œ, ์ด๋ฅผ ์ด์šฉํ•˜๋Š”
์„œ๋น„์Šค์— ์•Œ๋ ค์ค€๋‹ค.
์ฝ”๋””๋„ค์ดํ„ฐ
API Server
API Server
API Server
Cordinator
Auth Server
Auth Server
์ฝ”๋””๋„ค์ดํ„ฐ
API Server
API Server
API Server
Cordinator
Auth Server
Auth Server
Auth Server
2. Auth Server ์ถ”๊ฐ€
3. Auth Server ๊ฐ€ ์ถ”๊ฐ€
๋˜์—ˆ์Œ, ๋‹ค์‹œ ๋ชฉ๋ก์„ ๊ฐ€
์ ธ๊ฐ€์‹œ์˜ค.
1. Auth Server ์˜ ๋ณ€๋™
์„ ์•Œ๋ ค์ค˜!!!
์ฝ”๋””๋„ค์ดํ„ฐ
Zookeeper
Etcd
consul
Circuit Breaker
Circuit Breaker ์˜ ํ•„์š”์„ฑ
โ— ํ˜„์žฌ์˜ ์„œ๋น„์Šค๋Š” ๋‹ค ์ˆ˜์˜ ๋งŽ์€ ์™ธ๋ถ€ ์„œ๋น„์Šค์˜ API(์ž๊ธฐ ํŒ€ ์ด์™ธ์—, ๋˜๋Š”
์ž๊ธฐ ํŒ€์—์„œ ๊ด€๋ฆฌํ•˜๋”๋ผ๋„ ๋‹ค๋ฅธ ์„œ๋ฒ„์˜)๋ฅผ ์‚ฌ์šฉํ•˜๊ฒŒ ๋จ.
โ— ๋ณดํ†ต์€ ์žฅ์• ๋ฅผ ๋Œ€๋น„ํ•ด์„œ Timeout์„ ์„ค์ •ํ•˜๊ฒŒ ๋˜๋Š”๋ฐโ€ฆ
โ—‹ Timeout ์ด ๊ธธ๋ฉด... ์ „์ฒด์ ์ธ ์„œ๋น„์Šค๊ฐ€ ๊ณ„์† ๋Š๋ ค์ง€๊ฒŒ ๋จ.
โ—‹ ํ•ด๋‹น ์Šค๋ ˆ๋“œ/ํ”„๋กœ์„ธ์Šค๊ฐ€ Timeout ๋™์•ˆ ๋‹ค๋ฅธ ์ž‘์—…์„ ๋ชปํ•จ.
โ— API ์ค‘์— ์ค‘์š”ํ•˜์ง€ ์•Š์€ ์„œ๋น„์Šค๋“ค๋„ ์žˆ์Œ(๊ด‘๊ณ ๋ฅผ ๋ณด์—ฌ์ค€๋‹ค๊ฑฐ๋‚˜โ€ฆ)
Circuit Breaker
Timeout ์ด 3์ดˆ๋ฉด ํ•ด๋‹น ์Šค๋ ˆ๋“œ๋Š” ์ค‘์š”
ํ•˜์ง€ ์•Š์€ API๋ฅผ
๊ธฐ๋‹ค๋ฆฐ๋‹ค๊ณ  3์ดˆ๋ฅผ ํ—ˆ๋น„
Circuit Breaker
์š”์ฒญ์ด ์Œ“์ด๋ฉด... ํ•ด๋‹น ์„œ๋น„์Šค๋„ ์‘๋‹ต์ด
๋Š๋ ค์ง€๊ธฐ ์‹œ์ž‘ํ•จ.
Circuit Breaker
์ฐจ๋ผ๋ฆฌ ๋นจ๋ฆฌ ์‹คํŒจํ•˜๊ณ , ๋‹ค๋ฅธ ๊ฐ’์„ ์ฃผ์ž
!!!
Fast Fail Back!!!
Return (๋ฏธ๋ฆฌ ์ •์˜๋œ ๊ฐ’)
Circuit Breaker
๊ด‘๊ณ ๋ฅผ ๋ชป๊ฐ€์ ธ์˜ค๋ฉด,
๊ทธ๋ƒฅ ๋‹ค๋ฅธ ์ด๋ฏธ์ง€๋กœ ๋Œ€์ฒด
๊ด‘๊ณ  API๊ฐ€ ์ฃฝ๋”๋ผ๋„
์„œ๋น„์Šค๋Š” ๋Š๋ ค์ง€์ง€ ์•Š๋Š”๋‹ค.
๋ธ”๋ฃจ/๊ทธ๋ฆฐ ๋ฐฐํฌ, Canary ๋ฐฐํฌ
๋ฐฐํฌ
๊ธฐ์กด์˜ ๋ฐฐํฌ๊ฐ€ ํž˜๋“  ์ด์œ 
๊ธฐ์กด์˜ ๋ฐฐํฌ๊ฐ€ ํž˜๋“  ์ด์œ 
โ— ๋ฒ„๊ทธ์˜ ์กด์žฌ
โ—‹ ๋ฌธ์ œ๊ฐ€ ๋ฐœ์ƒํ–ˆ์„ ๋•Œ, ํ•ด๋‹น ๋ฒ”์œ„๊ฐ€ ํด ์ˆ˜ ์žˆ๋‹ค.
โ— ๋ฐฐํฌ์— ์‹œ๊ฐ„์ด ๋„ˆ๋ฌด ๋งŽ์ด ๊ฑธ๋ฆฐ๋‹ค.
โ—‹ ๋กค๋ฐฑ ์‹œ๊ฐ„๋„ ๋ฐฐํฌ์‹œ๊ฐ„ ๋งŒํผ ์˜ค๋ž˜๊ฑธ๋ฆฐ๋‹ค.
๋ฐฐํฌ
์ด๋Ÿฐ ๋ฌธ์ œ๋ฅผ ํ•ด๊ฒฐํ•˜๊ธฐ ์œ„ํ•œ ๋ฐฉ๋ฒ•
๋ฐฐํฌ
์‰ฌ์šด ๋ฐฐํฌ ๋ฐฉ๋ฒ•(์ž๋™ํ™”๋œ ๋ฐฐํฌ)
๋ฒ„ํŠผ ํ•˜๋‚˜, ๋ช…๋ น ํ•˜๋‚˜๋กœ...
์ˆ˜๋งŽ์€ ์ž๋™ํ™”๋œ ํ…Œ์ŠคํŠธ๊ฐ€ ํ•„์š”
(CI/CD)
์ปค๋ฐ‹๋  ๋•Œ๋งˆ๋‹ค...
๋ฐฐํฌ
๋กค๋ฐฑ ์‹œ๊ฐ„์„ ์ค„์ผ๋ ค๋ฉด?
Blue/Green ๋ฐฐํฌ
์ƒˆ๋กœ์šด ํ•œ๋ฒŒ์„ ๊ตฌ์„ฑํ•ด์„œ ๋ฐฐํฌ, ๊ทธ๋ฆฌ๊ณ  ๋ผ์šฐํ„ฐ์˜ ๋ณ€๊ฒฝ์œผ๋กœ
์„œ๋ฒ„๊ตฐ์„ ๋ณ€๊ฒฝ
Blue/Green ๋ฐฐํฌ
๋กค๋ฐฑ์€ ๋‹ค์‹œ ๋ผ์šฐํ„ฐ
๋ณ€๊ฒฝ์œผ๋กœ ์ˆœ์‹๊ฐ„!!!
Blue/Green ๋ฐฐํฌ
๊ทธ๋Ÿฐ๋ฐ ํ•ญ์ƒ ๋‘๋ฒŒ์”ฉ ์œ ์ง€ํ•˜๋ผ๊ตฝ์‡ผ!!!!
ํด๋ผ์šฐ๋“œ ์•„๋‹ˆ๋ฉด ํž˜๋“ญ๋‹ˆ๋‹ค.
Blue/Green ์•ผ๋งค ๋ฒ„์ „ ๋ฐฐํฌ
Blue/Green ์•ผ๋งค ๋ฒ„์ „ ๋ฐฐํฌ
Blue/Green ์•ผ๋งค ๋ฒ„์ „ ๋ฐฐํฌ
Blue/Green ์•ผ๋งค ๋ฒ„์ „ ๋ฐฐํฌ
Blue/Green ์•ผ๋งค ๋ฒ„์ „ ๋ฐฐํฌ์˜ ๋ฌธ์ œ์ 
โ— ๊ฒฐ๊ตญ ๋‘˜ ๋‹ค ๋ฆฌ์†Œ์Šค๋ฅผ ๋งŽ์ด ์‚ฌ์šฉํ•˜๋Š” ๊ฒฝ์šฐ, ์‹œ์Šคํ…œ์— ์žฅ์• ๊ฐ€ ๋ฐœ์ƒํ•  ์ˆ˜
์žˆ๋‹ค.
โ— ํ”ผํฌ ํƒ€์ž„์€ ํ”ผํ•ด์„œ ๋ฐฐํฌํ•ด์•ผ ํ•œ๋‹ค.
โ— Graceful Shutdown ์ž˜ ๋˜์–ด ์žˆ์–ด์•ผ ํ•œ๋‹ค. (Router ์˜ ์—ญํ• ๋„ ์ค‘์š”ํ•จ.)
Blue/Green ๋ฐฐํฌ์™€ ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค ์Šคํ‚ค๋งˆ ๋ณ€๊ฒฝ
โ— DB ์Šคํ‚ค๋งˆ ๋ณ€๊ฒฝ์€ ์ง€์˜ฅ์œผ๋กœ ๊ฐ€๋Š” ์ง€๋ฆ„๊ธธโ€ฆ
โ—‹ ์ตœ๋Œ€ํ•œ ์ถ”๊ฐ€๋งŒ ํ•˜๊ณ , ์‚ญ์ œ์™€ ๋ณ€๊ฒฝ์€ ํ•˜์ง€ ์•Š๋Š”๋‹ค.
โ—‹ ๋ช‡๋ฒˆ์˜ ๋ฐฐํฌ์ดํ›„ ํ™•์‹คํžˆ ์‚ฌ์šฉํ•˜์ง€ ์•Š๋Š”๋‹ค๋Š” ๊ฒƒ์ด ํ™•์ธ๋  ๋•Œ
์‚ญ์ œ๊ฐ€๋Šฅ.
โ— ๋กค๋ฐฑ๋ณด๋‹ค๋Š” ๋นจ๋ฆฌ ๊ณ ์น˜๋Š” ๊ฑธ ์ถ”์ฒœ
โ— Feature Flag๋ฅผ ํ™œ์šฉํ•ด๋ณด์ž.
Canary ๋ฐฐํฌ
๋ธ”๋ฃจ/๊ทธ๋ฆฐ์„ ํ•˜๋”๋ผ๋„ ์žฅ์• ๊ฐ€
๋ฐœ์ƒํ•˜๋ฉด ๋Œ€์ƒ์˜ ๋ฒ”์œ„๊ฐ€ ๋„“๋‹ค
Canary ๋ฐฐํฌ
๋ฐ์ดํ„ฐ๊ฐ€ ์ง€์›Œ์ง€๋Š” ์‹ฌ๊ฐํ•œ ๋ฌธ์ œ๋ผ๋ฉด?
Canary ๋ฐฐํฌ
์ผ๋ถ€ ์œ ์ €์—๊ฒŒ๋งŒ ์ ์šฉํ•ด๋ณด์ž.
์„œ๋ฒ„๊ฐ€ 100๋Œ€๋ฉด ์œ ์ €์˜ 1%๋งŒโ€ฆ
์ž˜๋˜๋ฉด 10%... ๋” ์ž˜๋˜๋ฉด ์ „์ฒด ๋ฐฐํฌ
Canary ๋ฐฐํฌ : ํ•œ๋Œ€๋งŒ ๋ฐฐํฌํ•ด์„œ ์ œ๋Œ€๋กœ ๋™์ž‘ํ• ๊นŒ?
User #1์ด ๋‹ค์Œ๋ฒˆ์—
์š”์ฒญ์„ ํ•˜๊ฒŒ ๋˜๋Š” ์„œ๋ฒ„๋Š”?
ํ•ญ์ƒ 4๋ฒˆ์œผ๋กœ ๊ฐ„๋‹ค๋Š” ๋ณด์žฅ์ด ์—†๋‹ค.
Canary ๋ฐฐํฌ
์œ ์ €์˜ ๊ฒฉ๋ฆฌ๊ฐ€ ์„ ํ–‰๋  ์ˆ˜ ์žˆ์–ด์•ผ ํ•จ.
์„œ๋ฒ„๊ตฐ์ด ์•„์˜ˆ ๋‹ค๋ฅด๊ฑฐ๋‚˜โ€ฆ
A/B Test ํ˜•ํƒœ๋กœ ์ ์šฉ์ด ๊ฐ€๋Šฅํ•˜๊ฑฐ๋‚˜...
Feature Flag(Switch)
Feature Switch
์ƒˆ๋กœ ๋‚˜๊ฐˆ ๊ธฐ๋Šฅ์„ ๋ฐฐํฌ์—†์ด ์˜ต์…˜์œผ๋กœ
์‹ค์‹œ๊ฐ„์œผ๋กœ ๋„๊ณ  ์ผค ์ˆ˜ ์žˆ๋„๋ก ์ค€๋น„
Feature Flag(Switch) ์˜ ์žฅ์ 
โ— ํŠน์ • ๊ธฐ๋Šฅ์— ๋ฌธ์ œ๊ฐ€ ์ƒ๊ฒผ์„ ๋•Œ, ํ•ด๋‹น ๊ธฐ๋Šฅ์„ ๊บผ๋ฒ„๋ฆฌ๋ฉด ๋œ๋‹ค.
โ—‹ ๋กค๋ฐฑ ๋ฐฐํฌ๋„ ํ•„์š” ์—†์Œ.
โ— ๋‹ค๋งŒ ํŠน์ • ๊ธฐ๋Šฅ์ด ๋™์ž‘ํ•˜์ง€ ์•Š๋Š”๋‹ค๋ฉด, UI์—์„œ๋Š” ์–ด๋–ป๊ฒŒ ๋ณด์—ฌ์งˆ์ง€, ํ˜‘์˜
๊ฐ€ ํ•„์š”.
โ—‹ ํด๋ผ์ด์–ธํŠธ ์ž‘์—…์ด ํ•„์š”ํ•  ์ˆ˜ ์žˆ์Œ.
โ–  ํด๋ผ์ด์–ธํŠธ๋Š” ํŠน์ •๊ฐ’์ด ์˜ค๋Š” ๊ฑธ๋กœ ๊ฐ€์ •ํ•ด๋ฒ„๋ฆฌ๋ฉด... ๋‹ค ํ•จ๊ป˜
Crash!!!
์š”์•ฝ
โ— ๋Œ€์šฉ๋Ÿ‰ ์„œ๋น„์Šค ์„ค๊ณ„๋Š”
โ—‹ SPOF๋ฅผ ์ค„์ด๊ณ  ๊ฐ€๋Šฅํ•œ ์žฅ๋น„์ถ”๊ฐ€๋กœ ์ธํ•œ ์„ ํ˜•์ ์ธ ์„ฑ๋Šฅ ์ฆ๋Œ€๊ฐ€ ํ•„
์š”ํ•˜๋‹ค.
โ— ์—ฌ๋Ÿฌ๊ฐ€์ง€ ์ƒํ™ฉ์— ๋งž์ถ”๊ธฐ ์œ„ํ•ด ์ž๋™ํ™”๊ฐ€ ํ•„์ˆ˜(๋ฐฐํฌ/ํ…Œ์ŠคํŠธ)
โ—‹ ๋ช‡ ๋ฐฑ๋Œ€ ์ด์ƒ์˜ ์„œ๋ฒ„๋ฅผ ๊ด€๋ฆฌํ•ด์•ผ ํ•œ๋‹ค.
โ— ํ•ญ์ƒ. ์ด๋Ÿฌ๋ฉด ์ˆ˜๋ฐฑ๋งŒ๋ช…์ด ๋™์‹œ์— ์จ๋„ ๊ดœ์ฐฎ์„๊นŒ๋ฅผ ๋ฌผ์–ด๋ณด์ž.
๊ฐ์‚ฌํ•ฉ๋‹ˆ๋‹ค.

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