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๋Œ€๊ทœ๋ชจ ์„œ๋น„์Šค๋ฅผ ์ง€ํƒฑํ•˜๋Š” ๊ธฐ์ˆ 
- ๊ธฐ์ดˆํŽธ
๊ฐ•๋Œ€๋ช…(charsyam@naver.com)
๋ฐœํ‘œ์ž ์†Œ๊ฐœ
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
์ด๋Ÿฐ ์„œ๋น„์Šค๋Š”
์–ด๋–ป๊ฒŒ ๋งŒ๋“ค์–ด์•ผ ํ• ๊นŒ์š”?
์„œ๋ฒ„ ํ•œ๋Œ€๋กœ ๊ฐ€๋Šฅํ• ๊นŒ์š”?
์งˆ๋ฌธ
์ด๋Ÿฐ ์„œ๋น„์Šค๋ฅผ ์šด์˜ํ•˜๊ธฐ
์œ„ํ•ด์„œ ๋ช‡ ๋Œ€์˜ ์„œ๋ฒ„๊ฐ€
ํ•„์š”ํ• ๊นŒ์š”?
๋ง‰ ์‹œ์ž‘ํ•˜๋Š” ์ดˆ๊ธฐ ์Šคํƒ€ํŠธ์—…์˜ ๊ตฌ์กฐ
DBMS
API ServerWeb Browser
Mobile Apps
์šฉ์–ด ์„ค๋ช…
โ— API Server
โ—‹ ์‹ค์ œ์ ์ธ ๋กœ์ง์„ ์ฒ˜๋ฆฌํ•˜๋Š” ์„œ๋ฒ„, ํšŒ์› ๊ฐ€์ž…
โ— DBMS(DataBase Management System)
โ—‹ ์‹ค์ œ ๋ฐ์ดํ„ฐ๊ฐ€ ์ €์žฅ๋˜๋Š” ๊ณณ
โ—‹ Mysql, Postgresql, Oracle ๋“ฑ๋“ฑ
์ฒ˜์Œ์—๋Š” ํ•œ๋Œ€๋กœ!!!
โ— ์ฒ˜์Œ์—๋Š” ํ•œ๋Œ€๋กœ ์‹œ์ž‘ํ•ฉ๋‹ˆ๋‹ค.
โ—‹ ์™œ?
โ–  ๋ˆ์ด ์—†์Šต๋‹ˆ๋‹ค.
โ–  ์‚ฌ์šฉ์ž๋„ ์—†์Šต๋‹ˆ๋‹ค.
์งˆ๋ฌธ
๊ทธ๋Ÿฐ๋ฐ ์„œ๋ฒ„๊ฐ€ ํ•œ๋Œ€์ธ๋ฐโ€ฆ
์„œ๋ฒ„๊ฐ€ ๊ณ ์žฅ๋‚˜๋ฉด?
๋ฌผ๋ฆฌ ์„œ๋ฒ„๊ฐ€ ์žฅ์• 
DBMS
API ServerWeb Browser
Mobile Apps
Web Server ๊ฐ€ ์žฅ์• 
DBMS
API ServerWeb Browser
Mobile Apps
DBMS ๊ฐ€ ์žฅ์• ...
DBMS
API ServerWeb Browser
Mobile Apps
์ด๋Ÿด ๋•Œ๋Š” ์–ด๋–ป๊ฒŒ?
๋‘ ๋Œ€๋ฅผ ๋‘ก๋‹ˆ๋‹ค.
DBMS
API Server
Web Browser
Mobile Apps
DBMS
API Server
ํ•œ ๋Œ€๊ฐ€ ์ฃฝ๋”๋ผ๋„... ์„œ๋น„์Šค๊ฐ€...
DBMS
API Server
Web Browser
Mobile Apps
DBMS
API Server
์ž˜ ๋ ๊นŒ์š”?
๋‘ ๋Œ€์ผ ๋•Œ์˜ ๋ฌธ์ œ์ !!!
User์˜ ์นœ๊ตฌ ๋ชฉ๋ก์„ ๊ฐ€์ ธ
์˜จ๋‹ค๊ณ  ํ•ฉ์‹œ๋‹ค.
๋‘ ๋Œ€ ์ผ๋•Œ์˜ ๋ฌธ์ œ์ !!!
DBMS 1
API Server 1
Web Browser
Mobile Apps
DBMS 2
API Server 2
User #1
Friends
User #2
Friends
User #3
Friends
User #1์€ ์–ด๋””๋กœ ๊ฐ€์•ผํ•˜๋‚˜์š”?
DBMS 1
API Server 1
Web Browser
Mobile Apps
DBMS 2
API Server 2
User #1
User #1
Friends
User #2
Friends
User #3
Friends
API Server 1๋กœ ๊ฐ€๋ฉด?
- ์ฐพ์„ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
DBMS 1
API Server 1
Web Browser
Mobile Apps
DBMS 2
API Server 2
User #1
User #1
Friends
User #2
Friends
User #3
Friends
API Server 2๋กœ ๊ฐ€๋ฉด
- ๋ชป์ฐพ์Šต๋‹ˆ๋‹ค.
DBMS 1
API Server 1
Web Browser
Mobile Apps
DBMS 2
API Server 2
User #1
User #1
Friends
User #2
Friends
User #3
Friends
๋ฐ์ดํ„ฐ๊ฐ€ ๋ถ„๋ฆฌ๋˜์–ด ์žˆ์œผ๋ฉด
์ฐพ๊ธฐ ์–ด๋ ต์Šต๋‹ˆ๋‹ค.
๊ทธ๋ž˜์„œ DB๋Š” ๋”ฐ๋กœ ๋ถ„๋ฆฌํ•ด์„œ
ํ•˜๋‚˜๋งŒ ๋ฐ”๋ผ๋ด…๋‹ˆ๋‹ค.
DB๊ฐ€ ํ•˜๋‚˜๋ฉดโ€ฆ
์–ด๋””๋กœ ๊ฐ€๋“  ๋ฐ์ดํ„ฐ๋ฅผ
์ฐพ์„ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
Web Browser
Mobile Apps
User #1
API Server 1
API Server 2
DBMS
User #1
User #1
Friends
User #2
Friends
User #3
Friends
์žฅ์• ๊ฐ€ ๋‚˜๋„ ๋‹ค๋ฅธ ์„œ๋ฒ„๊ฐ€ ์„œ๋น„์Šค๊ฐ€ ๊ฐ€๋Šฅํ•ฉ๋‹ˆ๋‹ค.
Web Browser
Mobile Apps
User #1
API Server 1
API Server 2
DBMS
User #1
User #1
Friends
User #2
Friends
User #3
Friends
์žฅ์• ๊ฐ€ ๋‚˜๋„ ๋‹ค๋ฅธ ์„œ๋ฒ„๊ฐ€ ์„œ๋น„์Šค๊ฐ€ ๊ฐ€๋Šฅํ•ฉ๋‹ˆ๋‹ค.
Web Browser
Mobile Apps
User #1
API Server 1
API Server 2
DBMS
User #1
User #1
Friends
User #2
Friends
User #3
Friends
์ž˜ ๋ ๊นŒ์š”?
๊ทธ๋Ÿฐ๋ฐ ์šฐ๋ฆฌ๋Š” ์–ด๋–ป๊ฒŒ
API Server 1,2 ๊ฐ€ ์žˆ๋‹ค๋Š”
๊ฒƒ์„ ์•Œ๊ณ  ์ฐพ์„ ์ˆ˜ ์žˆ์„๊นŒ
์š”?
๊ฐ€์„ค 1 : ์‚ฌ์šฉ์ž๊ฐ€ ์šฐ๋ฆฌ ์„œ๋ฒ„์˜ ์ฃผ์†Œ์™€ ์ƒํƒœ๋ฅผ ํ•ญ์ƒ ์•Œ
๊ณ  ์žˆ๋‹ค.
Web Browser
Mobile Apps
API Server 1
1.1.1.3
API Server 2
1.1.1.4
์ง€๊ธˆ ์„œ๋น„์Šค ์„œ๋ฒ„๋Š” 2๋Œ€๊ณ  ์ฃผ์†Œ๋Š”
API Server 1 ๊ณผ API Server 2
๋ชจ๋‘ ์ •์ƒ์ด์•ผ!!!
๊ฐ€๋Šฅํ• ๊นŒ์š”?
์„œ๋ฒ„๊ฐ€ ์ถ”๊ฐ€๋˜๊ฑฐ๋‚˜?
์ฃผ์†Œ๊ฐ€ ๋ฐ”๋€Œ๋ฉด?
๊ฐ€์„ค 2 : ์‚ฌ์šฉ์ž๋Š” ๋Œ€ํ‘œ ์ฃผ์†Œ ํ•˜๋‚˜๋งŒ ์•Œ๊ณ  ์šฐ๋ฆฌ๊ฐ€ ์•Œ์•„
์„œ ๋‚˜๋ˆ ์ค€๋‹ค.
Web Browser
Mobile Apps
API Server 1
1.1.1.3
API Server 2
1.1.1.4
DNS
DNS
โ— Domain Name Service
โ—‹ ์‹ค์ œ๋กœ ์ธํ„ฐ๋„ท ์ฃผ์†Œ๋Š” IP๋ผ๋Š” ์—ฌ๋Ÿฌ ์ˆซ์ž์˜ ์กฐํ•ฉ์œผ๋กœ ์ด๋ฃจ์–ด์ ธ ์žˆ์Šต
๋‹ˆ๋‹ค.
โ–  Udemy.com -> 104.18.134.108
โ— (์ด๊ฑด IPv4, ๋” ๋งŽ์€ ์ฃผ์†Œ๋ฅผ ์œ„ํ•œ IPv6๋„ ์žˆ์Šต๋‹ˆ๋‹ค.)
DNS
> nslookup udemy.com
Server: 1.214.68.2
Address: 1.214.68.2#53
Non-authoritative answer:
Name: udemy.com
Address: 104.18.134.108
Name: udemy.com
Address: 104.18.133.108
Name: udemy.com
Address: 104.18.130.108
Name: udemy.com
Address: 104.18.132.108
Name: udemy.com
Address: 104.18.131.108
DNS๋ฅผ ์ด์šฉํ•˜๋ฉด?
Web Browser
Mobile Apps
API Server 1
1.1.1.3
API Server 2
1.1.1.4
DNS
Request
API Server 1
Response
API Server 1
is 1.1.1.3
DNS
โ— apiserver.com ์ด๋ผ๋Š” ์ฃผ์†Œ์—
โ—‹ 1.1.1.3
โ—‹ 1.1.1.4๋ฅผ ํ• ๋‹นํ•ฉ๋‹ˆ๋‹ค.
DNS๋ฅผ ์ด์šฉํ•˜๋ฉด apiserver.com ์„ ์ ‘์†ํ•˜๋ฉด ๋‘ ์„œ๋ฒ„
์ค‘์— ํ•˜๋‚˜๋กœ ์ ‘์†์ด ๊ฐ€๋Šฅํ•ฉ๋‹ˆ๋‹ค.
Web Browser
Mobile Apps
API Server 1
1.1.1.3
API Server 2
1.1.1.4
DNS
Request
apiserver.com
Response
apiserver is
1.1.1.3 and 1.1.1.4
์ž˜ ๋ ๊นŒ์š”?
์นœ๊ตฌ ๋ชฉ๋ก์„ ์—ฌ๋Ÿฌ๋ฒˆ ํ˜ธ์ถœํ•œ๋‹ค๊ณ  ํ•ฉ์‹œ๋‹ค. ๊ทธ ๋•Œ๋งˆ๋‹ค DNS
๋ฅผ ํ˜ธ์ถœํ•œ๋‹ค๋ฉด?
getFriends()
API Server 1
1.1.1.3
DNS
Request: apiserver.com
Response: 1.1.1.3
getFriends()
Request: apiserver.com
Response: 1.1.1.3
DNS ๋Š”
TTL(Time to Live) ๋ผ๋Š”
์ผ์ข…์˜ ์บ์‹œ๋ฅผ ๊ฐ€์ง€๊ณ  ์žˆ
์Šต๋‹ˆ๋‹ค.
DNS TTL
โ— Facebook ์„ ํ•˜๋ฃจ์— 12์–ต๋ช…์ด ์‚ฌ์šฉํ•ฉ๋‹ˆ๋‹ค. ๋งค๋ฒˆ ๊ธฐ๋Šฅ์„ ํ˜ธ์ถœ ํ•  ๋•Œ ๋งˆ๋‹ค
DNS๋ฅผ ํ˜ธ์ถœํ•œ๋‹ค๋ฉด, DNS ์„œ๋ฒ„๋Š” ์–ผ๋งˆ๋‚˜ ์ปค์•ผ ํ• ๊นŒ์š”?
์ด๋ฏธ apiserver.com ์€ 1.1.1.3์ด๋ผ๋Š” ๊ฑธ ์•Œ๊ณ  ์žˆ์œผ๋ฏ€๋กœ
30์ดˆ๊ฐ„ ๊ทธ๋ƒฅ 1.1.1.3์„ ์‚ฌ์šฉํ•œ๋‹ค.
getFriends()
API Server 1
1.1.1.3
DNS
Request: apiserver.com
Response: 1.1.1.3 TTL: 30
getFriends()
์ด๋ฏธ ์•Œ๊ณ  ์žˆ์œผ๋ฏ€๋กœ ๋ฐ”๋กœ 1.1.1.3
์œผ๋กœ ์ ‘์†
๊ทธ๋Ÿฐ๋ฐ ์žฅ์• ๊ฐ€ ๋‚˜๋ฉด?
์žฅ์• ๊ฐ€ ๋‚˜๋„ ์‘๋‹ต์€ ์—ฌ์ „ํžˆ 1.1.1.3 ๊ณผ 1.1.1.4 ์ž…๋‹ˆ๋‹ค.
1.1.1.4๋ฅผ ๋ฐ›์œผ๋ฉด ์–ด๋–ป๊ฒŒ ๋ ๊นŒ์š”?
Web Browser
Mobile Apps
API Server 1
1.1.1.3
API Server 2
1.1.1.4
DNS
Request
apiserver.com
Response
apiserver is
1.1.1.3 and 1.1.1.4
IP ์ฃผ์†Œ๊ฐ€ ๋ฐ”๋€Œ๋ฉด?
์ด๋ฏธ apiserver.com ์€ 1.1.1.3์ด๋ผ๋Š” ๊ฑธ ๋ฐ›์•˜์œผ๋ฏ€๋กœ
1.1.1.5๋กœ ๋ฐ”๋€๊ฑธ TTL ์ด๋‚ด์—๋Š” ์•Œ ์ˆ˜ ์—†๋‹ค.
getFriends()
API Server 1
1.1.1.3
DNS
Request: apiserver.com
Response: 1.1.1.3 TTL: 30
getFriends()
์ด๋ฏธ ์•Œ๊ณ  ์žˆ์œผ๋ฏ€๋กœ ๋ฐ”๋กœ 1.1.1.3
์œผ๋กœ ์ ‘์† ์‹œ๋„
API Server 1
1.1.1.5
Load Balancer
Load Balancer(LB) ์˜ ๋™์ž‘
Request ๋ฅผ ์—ฐ๊ฒฐ๋œ ์„œ๋ฒ„๋“ค์—๊ฒŒ ๋‚˜๋ˆ„์–ด ์ค๋‹ˆ๋‹ค.
Web Browser
Mobile Apps
API Server 1
1.1.1.3
API Server 2
1.1.1.4
DNS
Request
apiserver.com
Response
apiserver is
1.1.1.2
LB
1.1.1.2
REQ #1
REQ #2
REQ #3
Load Balancer(LB) ์˜ ๋™์ž‘
Request ๋ฅผ ์—ฐ๊ฒฐ๋œ ์„œ๋ฒ„๋“ค์—๊ฒŒ ๋‚˜๋ˆ„์–ด ์ค๋‹ˆ๋‹ค.
Web Browser
Mobile Apps
API Server 1
1.1.1.3
API Server 2
1.1.1.4
DNS
Request
apiserver.com
Response
apiserver is
1.1.1.2
LB
1.1.1.2
REQ #1
REQ #2
REQ #3
Load Balancer(LB) ์˜ ๋™์ž‘
Request ๋ฅผ ์—ฐ๊ฒฐ๋œ ์„œ๋ฒ„๋“ค์—๊ฒŒ ๋‚˜๋ˆ„์–ด ์ค๋‹ˆ๋‹ค.
Web Browser
Mobile Apps
API Server 1
1.1.1.3
API Server 2
1.1.1.4
DNS
Request
apiserver.com
Response
apiserver is
1.1.1.2
LB
1.1.1.2
REQ #1
REQ #2REQ #3
Load Balancer(LB) ์˜ ๋™์ž‘
Request ๋ฅผ ์—ฐ๊ฒฐ๋œ ์„œ๋ฒ„๋“ค์—๊ฒŒ ๋‚˜๋ˆ„์–ด ์ค๋‹ˆ๋‹ค.
Web Browser
Mobile Apps
API Server 1
1.1.1.3
API Server 2
1.1.1.4
DNS
Request
apiserver.com
Response
apiserver is
1.1.1.2
LB
1.1.1.2
REQ #1
REQ #2
REQ #3
Load Balancer๊ฐ€
๊ณ ์žฅ๋‚˜๋ฉด ์–ด๋–ป๊ฒŒ ๋˜๋‚˜์š”?
Load Balancer(LB) ์˜ ๋™์ž‘
Request ๋ฅผ ์—ฐ๊ฒฐ๋œ ์„œ๋ฒ„๋“ค์—๊ฒŒ ๋‚˜๋ˆ„์–ด ์ค๋‹ˆ๋‹ค.
Web Browser
Mobile Apps
API Server 1
1.1.1.3
API Server 2
1.1.1.4
DNS
Request
apiserver.com
Response
apiserver is
1.1.1.2
LB
1.1.1.10
Active
REQ #1
REQ #2
REQ #3
LB
1.1.1.11
StandBy
1.1.1.2
LB๊ฐ€ ์žฅ์• ๊ฐ€ ๋‚˜๋ฉด? ํ•ด๋‹น LB์—๊ฒŒ ํ• ๋‹น๋œ IP๋ฅผ ๋‹ค๋ฅธ LB
์—๊ฒŒ ๋„˜๊ฒจ์ค๋‹ˆ๋‹ค.
Web Browser
Mobile Apps
API Server 1
1.1.1.3
API Server 2
1.1.1.4
DNS
Request
apiserver.com
Response
apiserver is
1.1.1.2
LB
1.1.1.10
Active
REQ #1
REQ #2
REQ #3
LB
1.1.1.11
Active
1.1.1.2
Cloud ์„œ๋น„์Šค ์ œ๊ณต์ž(AWS, GCP, AZURE) ๋“ฑ์˜ Load
Balancer ๋Š” ํ•˜๋‚˜๋กœ ๋ณด์ด์ง€๋งŒ ๋‚ด๋ถ€์ ์œผ๋กœ ์žฅ์• ์‹œ ์œ„์™€
๊ฐ™์ด ๋™์ž‘ํ•ฉ๋‹ˆ๋‹ค.
Web Browser
Mobile Apps
API Server 1
1.1.1.3
API Server 2
1.1.1.4
DNS
Request
apiserver.com
Response
apiserver is
1.1.1.2
ELB
1.1.1.2
REQ #1
REQ #2
REQ #3
DNS๋กœ ๋Œ์•„๊ฐ€์„œ
์ด ip ๋“ค์€
์„œ๋ฒ„์ผ๊นŒ์š”?
LB์ผ๊นŒ์š”?
> nslookup udemy.com
Server: 1.214.68.2
Address: 1.214.68.2#53
Non-authoritative answer:
Name: udemy.com
Address: 104.18.134.108
Name: udemy.com
Address: 104.18.133.108
Name: udemy.com
Address: 104.18.130.108
Name: udemy.com
Address: 104.18.132.108
Name: udemy.com
Address: 104.18.131.108
์ž˜ ๋ ๊นŒ์š”?
Data
๊ทธ๋Ÿฐ๋ฐ DBMS๋Š” ํ•œ๋Œ€์ธ๋ฐ?
Web Browser
Mobile Apps
API Server 1
API Server 2
DBMS
๊ทธ๋Ÿฌ๋ฉด ๋‘๋Œ€๋กœ?
Web Browser
Mobile Apps
API Server 1
API Server 2
DBMS
DBMS
๊ทธ๋Ÿฌ๋ฉด ์ฒ˜์Œ๊ณผ ๊ฐ™์€ ๋ฌธ์ œ๊ฐ€
๋‹ค์‹œ ์ƒ๊น๋‹ˆ๋‹ค.
Data Replication
๋ฐ์ดํ„ฐ ๋ณต์ œ
Data Replication
โ— ํ•œ ๋Œ€์˜ ์„œ๋ฒ„์˜ ๋‚ด์šฉ์„ ์ง€์†์ ์œผ๋กœ ๋‹ค๋ฅธ ์„œ๋ฒ„๋กœ ๋ณต์ œํ•ด์ฃผ๋Š” ์ž‘์—…
โ—‹ Primay(์„œ๋น„์Šค๋ฅผ ํ•˜๊ณ  ์žˆ๋Š” DB)์˜ ๋‚ด์šฉ์„ ์ž๋™์œผ๋กœ Secondary(๋ฐฑ
์—…์šฉ DB) ์— ๋ฐ์ดํ„ฐ๋ฅผ ๋ณต์ œํ•ด์ค๋‹ˆ๋‹ค.
โ— ๋‘ ๋Œ€๊ฐ€ ๊ฐ™์€ ๋‚ด์šฉ์„ ๊ฐ€์ง€๋ฏ€๋กœ, ํ•œ ๋Œ€์— ๋ฌธ์ œ๊ฐ€ ์ƒ๊ธฐ๋”๋ผ๋„ ๋‹ค๋ฅธ ์„œ๋ฒ„๋กœ
์„œ๋น„์Šค๊ฐ€ ๊ฐ€๋Šฅํ•ฉ๋‹ˆ๋‹ค.
๋ฐ์ดํ„ฐ ๋ณต์ œ
Web Browser
Mobile Apps
API Server 1
API Server 2
DBMS
Primary
DBMS
Secondary
Name Email Password
Name Email Password
DBMS ์žฅ์• 
Web Browser
Mobile Apps
API Server 1
API Server 2
DBMS
Primary
DBMS
Primary
๋ณต๊ตฌ ๋˜๋ฉด!!!
Web Browser
Mobile Apps
API Server 1
API Server 2
DBMS
Secondary
DBMS
Primary
Name Email Password
Name Email Password
์ตœ์†Œํ•œ์˜ ์„œ๋น„์Šค ์•ˆ์ „์„ฑ
์„ ์œ„ํ•œ ๋ชจ์Šต
์ตœ์†Œํ•œ์˜ ๋ชจ์Šต
Web Browser
Mobile Apps
API Server 1
1.1.1.3
API Server 2
1.1.1.4
ELB
1.1.1.2
DBMS
Primary
DBMS
Secondary
์—ฌ๊ธฐ๊นŒ์ง€๊ฐ€ ์„œ๋น„์Šค๋ฅผ ์œ„
ํ•œ ๊ธฐ๋ณธ์ž…๋‹ˆ๋‹ค.
๋Œ€๊ทœ๋ชจ ์„œ๋น„์Šค
์‚ฌ์šฉ์ž๊ฐ€ ๋งŽ๋‹ค.
ํŠธ๋ž˜ํ”ฝ์ด ๋งŽ๋‹ค.
๋ฐ์ดํ„ฐ๊ฐ€ ๋งŽ๋‹ค.
Facebook
2.27 billion
MAU
์‚ฌ์šฉ์ž๊ฐ€ ๋งŽ๋‹ค.
ํŠธ๋ž˜ํ”ฝ์ด ๋งŽ๋‹ค.
๋ฐ์ดํ„ฐ๊ฐ€ ๋งŽ๋‹ค.
Netflix
์‚ฌ์šฉ์ž๊ฐ€ ๋งŽ๋‹ค.
ํŠธ๋ž˜ํ”ฝ์ด ๋งŽ๋‹ค.
๋ฐ์ดํ„ฐ๊ฐ€ ๋งŽ๋‹ค.
Data
์œ ์ € ์ •๋ณด, ์นœ๊ตฌ ๋ชฉ๋ก
๊ธ€, ์‚ฌ์ง„, ๋น„๋””์˜ค
Facebook
ํ•˜๋‚˜์˜ ์ด๋ฏธ์ง€ ์‚ฌ์ด์ฆˆ๋Š”
์–ผ๋งˆ์ผ๊นŒ์š”?
์ œ ํฐ์—์„œ๋Š” ๋Œ€๋žต 4MB
4MB * 1000 = 4GB
4GB * 1000 = 4TB
๋ฐฑ๋งŒ ์žฅ ์ •๋„์˜
์‚ฌ์ง„ ์ €์žฅ์—
4TB
์ด๋Ÿฐ ๊ตฌ์กฐ?
Web Browser
Mobile Apps
API Server 1
API Server 2
File Server
4TB
4TB
4TB
์–ด๋–ค ๋ฌธ์ œ๊ฐ€ ์žˆ์„๊ฐ€์š”?
File Server ๊ฐ€ ์žฅ์• ๋‚˜๋ฉด?
Web Browser
Mobile Apps
API Server 1
API Server 2
File Server
4TB
4TB
4TB
๊ฒฐ๊ตญ ๋ฐ์ดํ„ฐ ๋ณต์ œ๊ฐ€
ํ•„์š”ํ•ฉ๋‹ˆ๋‹ค.
๊ทธ๋Ÿฌ๋ฉด ๋ช‡๊ฐœ์˜ ๋ณต์ œ๋ณธ์„ ๋‘ฌ์•ผ ํ• ๊นŒ์š”?
Web Browser
Mobile Apps
API Server 1
API Server 2 File Server
4TB
4TB
4TB
File Server
4TB
4TB
4TB
3๊ฐœ์˜ ๋ณต์ œ๋ณธ
Uptime : ์„œ๋น„์Šค๊ฐ€ ๊ธฐ๋™ ์ค‘์ธ ์‹œ๊ฐ„
๊ฐ€๋™์œจ ์žฅ์•  ์‹œ๊ฐ„(1๋…„ ๊ธฐ์ค€)
90% 36์ผ
99% 3.65์ผ
99.5% 1.83์ผ
99.9% 8.76 ์‹œ๊ฐ„
99.99% 52.56 ๋ถ„
99.999% 5.25 ๋ถ„
99.9999% 31.5 ์ดˆ
Data Loss : ๋ณดํ†ต 3๊ฐœ์˜ ๋ณต์ œ๋ณธ์„ ๋‘๋ฉด 99.999% ๋ณด
์žฅ
๋ณด์žฅ์œจ ๋ณต์ œ ๊ฐœ์ˆ˜
99.99% 2
99.999% 3
4MB ์‚ฌ์ง„ ๋ฐฑ๋งŒ์žฅ์„
์ €์žฅํ•˜๋ ค๋ฉด?
4TB * 3 = 12TB ๊ฐ€ ํ•„์š”.
์ €์žฅ ๊ณต๊ฐ„๋งŒ ์žˆ์œผ๋ฉด
์ถฉ๋ถ„ํ• ๊นŒ์š”?
๊ฐ๊ฐ์˜ ์‚ฌ์ง„ ์ •๋ณด๊ฐ€
์–ด๋Š ์„œ๋ฒ„์— ์žˆ๋Š”์ง€๋„
๊ด€๋ฆฌํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.
Object Storage
ํด๋ผ์šฐ๋“œ์—์„œ๋Š” ๋ณดํ†ต
์ด๋Ÿฐ ์„œ๋น„์Šค๋ฅผ ์ œ๊ณตํ•ด์ค
๋‹ˆ๋‹ค.
AWS S3
AZURE Blob
GCP Google Stroage
P2P ๊ธฐ๋ฐ˜์˜ IPFS ๋ผ๋Š”
ํ”„๋กœ์ ํŠธ๋„ ์žˆ์Šต๋‹ˆ๋‹ค.
์ด๋Ÿฐ Object ์Šคํ† ๋ฆฌ์ง€ ์„œ๋น„์Šค๋Š” ํฐ ํšŒ์‚ฌ๋Š” ์ž์ฒด์ ์œผ๋กœ,
์ž‘์€ ๊ณณ์—์„œ๋Š” ๊ทธ๋ƒฅ ํด๋ผ์šฐ๋“œ๊ป„ ์“ฐ๋Š”๊ฒŒ ์ด๋“์ž…๋‹ˆ๋‹ค.
Web Browser
Mobile Apps
API Server 1
API Server 2
Object
Storage
Service
๊ทธ๋Ÿฐ๋ฐ ์ž˜ ๋™์ž‘ํ• ๊นŒ์š”?
์ด๋ฏธ์ง€๋‚˜ ๋™์˜์ƒ์€ ์™ธ๋ถ€์—
์ €์žฅํ•˜๋”๋ผ๋„, ๊ทธ ์ •๋ณด๋Š”
๋”ฐ๋กœ ๊ด€๋ฆฌํ•  ํ•„์š”๊ฐ€ ์žˆ์Šต๋‹ˆ๋‹ค.
์˜ˆ๋ฅผ ๋“ค๋ฉด
๋ฐ์ดํ„ฐ์˜ ์ข…๋ฅ˜
doc1 doc2
abcdefg1
doc1 ์ด๋ผ๋Š” ์ฃผ์†Œ๋ฅผ ๊ฐ€์ง„ ๋ฌธ์„œ๊ฐ€
abcdefg1 ์ด๋ผ๋Š” ์ด๋ฏธ์ง€๋ฅผ ๊ฐ€์ง€๊ณ 
์žˆ๋‹ค๊ณ  ํ•ฉ๋‹ˆ๋‹ค.
doc1 ์ด abcdefg1 ์ด๋ผ๋Š”
์ด๋ฏธ์ง€๋ฅผ ๊ฐ€์ง„๋‹ค๋Š” ์ •๋ณด๋ฅผ
๊ด€๋ฆฌํ•  ํ•„์š”๊ฐ€ ์žˆ์Šต๋‹ˆ๋‹ค.
์ด๋Ÿฐ ์‹์œผ๋กœ...
Web Browser
Mobile Apps
API Server 1
API Server 2
DBMS
primary
DBMS
secondary
Object
Storage
Service
abcdefg1
abcdefg2
abcdefg3
abcdefg1
abcdefg2
abcdefg3
doc1
doc2
doc3
๊ทธ๋Ÿฐ๋ฐ ์ž˜ ๋™์ž‘ํ• ๊นŒ์š”?
์–ด๋Š ์ •๋„ ๊ทœ๋ชจ๊นŒ์ง€๋Š” ์ž˜
๋™์ž‘ํ• ๊ป๋‹ˆ๋‹ค.
๋ฐ์ดํ„ฐ ํŒฝ์ฐฝ์˜ ์‹œ
๋Œ€
Giga : 1000 MB
Tera : 1000 GB
Peta : 1000 TB
Exa : 1000 PB
Zeta : 1000 Exa
Limitation
ํ•œ๊ณ„
DBMS ์˜ ํ•œ๊ณ„
DBMS ์˜ ํ•œ๊ณ„
TPS
TPS
Transaction Per Second
์ดˆ๋‹น ๋ช‡๊ฐœ์˜ ๋ช…๋ น์„ ์ฒ˜๋ฆฌํ•  ์ˆ˜ ์žˆ๋Š”
๊ฐ€?
TPS
๋งŒ์•ฝ MAX 1000TPS ๋ผ๋ฉด
1์ดˆ์— 1000๊ฐœ์˜ ๋ช…๋ น์ด
์ฒ˜๋ฆฌ๊ฐ€ ๊ฐ€๋Šฅํ•ฉ๋‹ˆ๋‹ค.
TPS
CPU ๋‚˜ ๋ฉ”๋ชจ๋ฆฌ, ๋””์Šคํฌ ์†๋„๋“ฑ์—
์˜ํ–ฅ์„ ๋ฐ›๊ฒŒ๋ฉ๋‹ˆ๋‹ค.
๋„ˆ๋ฌด ๋งŽ์€ ๋ช…๋ น์„ ์ฒ˜๋ฆฌํ•ด์•ผ ํ•˜
๋ฉด ์•„์ฃผ ์˜ค๋ž˜๊ฑธ๋ฆฌ๊ฑฐ๋‚˜
์žฅ๋น„๊ฐ€ ๊ณ ์žฅ๋‚  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
Response Time
Facebook ๊ธ€ ํ•˜๋‚˜ ๋ณด๋Š”๋ฐ
ํด๋ฆญ ํ›„ ํ•œ์‹œ๊ฐ„ ๋’ค์— ๋ณด์ธ๋‹ค๋ฉด?
Scale Up
Vs
Scale Out
ํ•˜๋“œ์›จ์–ด ์„ฑ๋Šฅ์€ ์ข‹์•„์ง€๊ณ 
๊ฐ€๊ฒฉ์€ ์‹ธ์ง€๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค.
(๋ฉ”๋ชจ๋ฆฌ ์ œ์™ธ... ๊ทธ๋ž˜ํ”ฝ์นด๋“œ ์ œ์™ธ)
ํด๋ผ์šฐ๋“œ ์—์„œ๋Š” instance type
์„ ๋ฐ”๊พธ๋Š” ๊ฒƒ๋„ ์‰ฝ์Šต๋‹ˆ๋‹ค.
๊ทธ๋Ÿฌ๋ฉด Scale Up๋งŒ
์ ์šฉํ•˜๋ฉด ๋ ๊นŒ์š”?
ํ•˜๋“œ์›จ์–ด ์„ฑ๋Šฅ์—๋Š” ํ•œ๊ณ„๊ฐ€
์žˆ์Šต๋‹ˆ๋‹ค.
๊ทธ ํ•œ๊ณ„๋ณด๋‹ค ๋งŽ์€ ์š”์ฒญ์ด
๋“ค์–ด์˜ค๋ฉด...
์œ„์—์„œ API ์„œ๋ฒ„๋ฅผ 2๋Œ€ ์ด์ƒ
๋‘๋Š” ๊ฒƒ๋„ Scale Out ์ž…๋‹ˆ๋‹ค.
๋ฐ์ดํ„ฐ์˜ Scale out
๋‹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.
๋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
2๋กœ ๋‚˜๋ˆ„๋Š”๊ฒŒ ์•„๋‹ˆ๋ผ 3์œผ๋กœ ๋‚˜๋ˆ ์•ผ ํ•˜๋ฉด?
5
1 2 3
4
๋งŽ์€ ์ˆ˜์˜ ๋ฐ์ดํ„ฐ๊ฐ€
์ด๋™์„ ํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.
ํ™•์žฅ์— ๋ฐ์ดํ„ฐ๊ฐ€ ์ ๊ฒŒ
์›€์ง์ด๋Š” ๋ฐฉ๋ฒ•์„
์—ฐ๊ตฌํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.
์ •๋ฆฌ
โ— ๋Œ€๊ทœ๋ชจ ์„œ๋น„์Šค๋Š” ์ˆ˜๋ฐฑ๋งŒ, ์ˆ˜์ฒœ๋งŒ๋ช…์ด ์‚ฌ์šฉํ•˜๋Š” ์„œ๋น„์Šค์ž…๋‹ˆ๋‹ค.
โ— ๋Œ€๊ทœ๋ชจ ๋ฐ์ดํ„ฐ๋ฅผ ๋‹ค๋ฃจ๋Š” ๊ฒƒ์€ ์ƒ๋‹นํžˆ ์žฌ๋ฏธ์žˆ์œผ๋ฉด์„œ๋„, ์–ด๋ ค์šด ์ผ์ž…๋‹ˆ๋‹ค.
โ— ํด๋ผ์šฐ๋“œ(AWS, Azure, GCP) ๊ณต๋ถ€ํ•˜์‹œ๋ฉด ์ข‹์Šต๋‹ˆ๋‹ค.
Thank you!!!

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AWS ์„œ๋ฒ„๋ฆฌ์Šค ์‹ ๊ทœ ์„œ๋น„์Šค ์ด์ •๋ฆฌ - ํŠธ๋ž™2, Community Day 2018 re:Invent ํŠน์ง‘
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