learn content delivery network (cdn) basics
TRANSCRIPT
CDNETWORKS.COM
THE INTERNET
INFRASTRUCTURE
GLOBAL NETWORK SERVERS
NETWORK PERFORMANCE COMPARISONS
SECURITY
OUTLINEAGENDA
CDNETWORKS.COM
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
INTERNET RTT LATENCY• DISTANCE• SPEED OF LIGHT
50 ms
150 msLONDON
NEW YORK
500 ms SHANGHAI
GLOBAL INTERNET CHALLENGES
SAN FRANCISCO
CDNETWORKS.COM
GLOBAL INTERNET CHALLENGESNETWORK PROBLEMS• NETWORK OF NETWORKS BOTTLENECKS• PACKET LOSS• CONGESTION• RETRANSMISSION
SAN FRANCISCO
USER
CDNETWORKS.COM
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
GLOBAL INTERNET INFRASTRUCTURE
CDNETWORKS.COM
STATIC CONTENTBase Web Page and graphics
DYNAMIC CONTENTChanging / moving content
2 TYPES OF CONTENT
CDNETWORKS.COM
WITHOUT A CDN
USER
SLOW
Dynamic Content
logo.gif File(Static Content)
BIG.pdf File(Static Content)
ORIGIN
CDNETWORKS.COM
WITH A CDN (STATIC CONTENT)
COPY FILES
FAST
logo.gif File(Static Content)
BIG.pdf File(Static Content)
ORIGIN
CDN COPY
USER
CDNETWORKS.COM
WITH A CDN (DYNAMIC CONTENT)
USER
SUPER HIGHWAY“MIDDLE MILE”
Dynamic Content
ORIGIN
CDNETWORKS.COM
WITH CDN (SECURITY)
ORIGIN
USER
Dynamic Content
logo.gif File(Static Content)
BIG.pdf File(Static Content)
CDNETWORKS.COM
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
FOR MORE INFORMATION CONTACT [email protected] OR +1408.228.3700
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