learn content delivery network (cdn) basics
TRANSCRIPT
![Page 1: Learn Content Delivery Network (CDN) Basics](https://reader036.vdocuments.us/reader036/viewer/2022062412/58f9b3c6760da3da068bd97f/html5/thumbnails/1.jpg)
CDNETWORKS.COM
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THE INTERNET
INFRASTRUCTURE
GLOBAL NETWORK SERVERS
NETWORK PERFORMANCE COMPARISONS
SECURITY
OUTLINEAGENDA
CDNETWORKS.COM
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THE GLOBAL INTERNET IS COMPLEXPoP 3
PoP 2
PoP 1
Tier 3 Networks (Multi-homed ISP)
IXC
Tier 1 Networks
Tier 3 Networks(single homed ISP)
Tier 2 ISPs
Global Network Providers
Internet Users
Broadband Providers
Tier 2 Networks
Regional ISPs,
University Networks
Transit
Transit
TransitTransit
Peering
CDNETWORKS.COM
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INTERNET RTT LATENCY• DISTANCE• SPEED OF LIGHT
50 ms
150 msLONDON
NEW YORK
500 ms SHANGHAI
GLOBAL INTERNET CHALLENGES
SAN FRANCISCO
CDNETWORKS.COM
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GLOBAL INTERNET CHALLENGESNETWORK PROBLEMS• NETWORK OF NETWORKS BOTTLENECKS• PACKET LOSS• CONGESTION• RETRANSMISSION
SAN FRANCISCO
USER
CDNETWORKS.COM
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MULTIPLE RTTs FOR CONNECTION NEGOTIATION
GLOBAL INTERNET CHALLENGESINEFFICIENT PROTOCOLS / RTT MULTIPLIER•CHATTY PROTOCOL•TCP SLOW START•TENS OF BACK & FORTH ROUND TRIPS•30-50 RTTs FOR ONLY 1 PAGE•CONNECTION LOAD AT ORIGIN
SAN FRANCISCOlogo.gif
File
USER
CDNETWORKS.COM
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GLOBAL INTERNET INFRASTRUCTURE
CDNETWORKS.COM
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STATIC CONTENTBase Web Page and graphics
DYNAMIC CONTENTChanging / moving content
2 TYPES OF CONTENT
CDNETWORKS.COM
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WITHOUT A CDN
USER
SLOW
Dynamic Content
logo.gif File(Static Content)
BIG.pdf File(Static Content)
ORIGIN
CDNETWORKS.COM
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WITH A CDN (STATIC CONTENT)
COPY FILES
FAST
logo.gif File(Static Content)
BIG.pdf File(Static Content)
ORIGIN
CDN COPY
USER
CDNETWORKS.COM
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WITH A CDN (DYNAMIC CONTENT)
USER
SUPER HIGHWAY“MIDDLE MILE”
Dynamic Content
ORIGIN
CDNETWORKS.COM
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WITH CDN (SECURITY)
ORIGIN
USER
Dynamic Content
logo.gif File(Static Content)
BIG.pdf File(Static Content)
CDNETWORKS.COM
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KEY TAKEAWAYSGlobal Auction Website Origin
3 Datacenters
CDN (CDNetworks)
GLOBAL INTERNET CHALLENGES – RTT & LATENCY (SLOW)
A CDN BRINGS STATIC CONTENT CLOSER TO USERS
A CDN ACCELERATES DYNAMIC CONTENT
A CDN DEFENDS, ATTACKS & ABSORBS SECURITY THREATS
CDNETWORKS.COM