�ݺ�ߣ

?2016 AKAMAI | FASTER FORWARDTM
Grow revenue opportunities with fast, personalized
web experiences and manage complexity from peak
demand, mobile devices and data collection.
???
Technical Account Manager
Akamai Technologies Korea
Video Over Cellular??? ?? ??? CDN? ??

? CDN? ????
? Global Online Game? ????
? ??? ???? ????
? Challenge
? ??/?? ?? (Purge, Versioning? Integrity)
? Latency? ??? Network Architecture (Multi-Origin vs
Single-Origin + CDN)
? Protocol ???
? ????
? Conclusion
Agenda

CDN? ????

??? ???? ???
????? ??
? ??? ???? �C Middle Mile
? 500 ~ 5000 Mile ? ??? ??
? ??? ????? ?? - ??
??/?? ???
??? ???? ??
? ???? ?? ?? ??
? ?? ???? ??
? ??? ???? ??
?????
???
Tier-1
ISP
Tier-1
ISP
First Mile :
?? 10??
20? ??
Middle Mile :
?? 10??
6? ??
Last Mile :
?? 10??
50? ??
500~5000??
ISP
ISP
MNO

??? ???? ???
?????
???
Tier-1
ISP
Tier-1
ISP
First Mile :
?? 10??
20? ??
Middle Mile :
?? 10??
6? ??
Last Mile :
?? 10??
50? ??
500~5000??
ISP
ISP
MNO
??? ??? ??
? Internet Bottleneck ?? ???
? ?????? ?? ?? ???
? ??? ???? ?? ?? ???
? ??? ????? ?? ???
?????2
Cloud

??? ???? ??? - CDN ? ?? ??
?????
???
Tier-1
ISP
Tier-1
ISP
10~100??
ISP
ISP
MNO
Cloud
???? ??? ?? ??? ??
? ??? ?? Internet Bottleneck ??
? ???? ???? ? ?? 10~100 Miles
? ??? ??? ???? ??
? Middle Mile ? ??
? ??? ??? ??? ??? ??
? ?? ??? ???? ????
?????? ??? ???????
????
? CDN ????? ?? ???? ?? ??
???
????
???
?????2

??? ??? ??? ????
???
PvP
???
??? ?? ??
??? ???
?? ????
???
????

??? ????, ????..
?? / ?? ?? / ?? ? ?
?? ??
Proto Type
?? ??
CBT / OBT
???
?? ??
?? ????
Play
Patch ????
Play & ???? ?? ? ?? Patch ??
? File ?? ?? ??
? Network Architecture
? Protocol ?? / ???
? Capacity / Dimensioning
? Patch ??
? ????
? ????
(?? ????)
? ???

Challenge 1: ??, ???, ????
Patch Upload
??????
Child??
? ?? 1
Parents??
v1
v1
v1
v1
v1 ? ?? 2
v1
? ?? 3
v1
v1
v1

Challenge 1: ??, ???, ????
Patch Upload
??????
Child??
? ?? 1
Parents??
v2
v2
v1
v1
? ?? 2
? ?? 3
v1
v1
Portal/API
2) Purging ??? ??
??
1) ??? ??
????
3) ??? ??, ???
????
???? ??

??: ??? > ?? > TTL
Patch Upload
??????
Child??
? ?? 1
Parents??
v2
v1
v1
v2 ? ?? 2
v2
? ?? 3
v2
v2
v2
v1
v2
v2
File? ???? ????
1. TTL? ???.
(TTL??*2???
??? ??? ??)
2. ?????? Patch
URL? access? ??,
Purging? URL?
Publishing.
3. ?? URL? ?? ???
URL? ??

Challenge 2: Network Architecture, Latency
? Latency Requirement less than 50ms?
Local (Domestic)
50 ms > , < 100 ms
> 100 ms

Route Optimization
100ms
200ms
125ms
15ms
10ms
BGP
???
?????
?? ???
SureRoute:
? Latency ? ?? ???? ??
? ??? ??? ? ????? ??? ??? ???? ?? ??? ??? ??
? ??? ??? ??? ?? ???? ?? ?? ??? ?? Failover ??? ??
Http/Https,
WebSocket
REST API ??

Route/Protocol Optimization
?? ??:
? ??? ??? ?? ??? ???? Packet Loss ????? ?? ??? ??
Non-Http(s)
TCP/IP ??
High-
Performance
Transport
Protocol
TCP ???:
? 3?? segment? ??? ?? ??? TCP??
? ??? Congestion Window ??? TCP Slow start ??
? ?? ???, ?? ?? Round Trip
?????:
? ???? ?? ??? ?? ??? ???? ??? ?? ?? (ICMP/TCP)

demand, mobile devices and data collection.Video Over Cellular????

Case1: PC ??-TCP/IP, TCP ?? ??
? TCP ????
? ???? ?? TCP
? ?? ????? ?? MMORPG ?? ??
? PvP? ?? ??? TCP ?? ?? ??
? ?? ??? ??? ????? CS??
Solution:
Akamai: Global Traffic Manager, ?? ???, TCP ???, ?? ??
Customer: PvP? ?? ??? ?? ??? ??

Case1: PC ??- TCP/IP, TCP ?? ??
?? ??
????
IP Application Accelerator
???
?????~
?? ??? ???
???? IPA ??
? SureRoute
? TCP Optimization
? Packet Replication

Case 2: Mobile??-HTTP REST API ??
? HTTP REST API ??
? ??? ????? ???? ??
? ??? ??? ??? ?? ??? ??
??? ??
Solution:
Akamai: Global Traffic Manager, ?? ???, TCP
???

Case 2: Mobile??-HTTP REST API ??
? HTTP REST API ??
? ???
? ?? ??
? ??
? ?? ??
? ?? ?? ????
? ?? ?? / ??? ??
? ???? ??? ??
Client
Game Server
POST /StageClear/ HTTP1.1
Host: www.gamecompany.com
Accept: application/json
Stage=1&Status=Clear&Score=100&..
200 OK
Connection: Keep-Alive
��.
{��stage��:2, ��Score��:100, ��new weapon��:��glove��}
Edge

demand, mobile devices and data collection.Video Over CellularConclusion

Authentication
Game Server
Payment
Inventory
Game Origin Infra
Region N
NetStorage / Storage
End-user
(1) GTM for regional assignment
Akamai Edge
(2) Simple Download (Game File / Patch)
Authentication
Game Server
Payment
Inventory
Game Origin Infra
Region 1
(3) Acceleration for APIs
Reference Diagram
1. Latency Requirement less than 50ms?
Local
50 ms > , < 100 ms
> 100 ms
Spot for Acceleration!
Spot for Acceleration
? File ?? ?? ??
? Network Architecture
? Protocol ?? / ???
? Capacity / Dimensioning

demand, mobile devices and data collection.

�ݺ�ߣ

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