Performance Plumbing Adam Bechtel 24 June 2008

WARNING  These slides won’t make any sense unless you hear the presentation.

The beginning…. Server Internet

You grow a little…. Server Internet Switch Load Balancer Server

Sites evolve….and so does a Backbone…

You’re global!

KNOBS  Cost  Packetloss  Latency  Maintenance  Diversity  Isolation  *Special*

ANYCAST  Network address and routing scheme used for proximity  Also useful for load absorption

ANYCAST ADDRESS WestCentralEast

ANYCAST SERVICES NameServer1: NameServer2: NameServer3: Anycast Cloud1Anycast Cloud2

ANYCAST SCALING Global Scaling  Add more sites Local Scaling  VIP  ECMP

ANYCAST CONSIDERATIONS  How are you going to monitor your service?  Can your service handle transient network events?  How much control do you want over where your users go?

CACHE Locate caches near users to minimize latency Need intelligent system to direct users to caches

PROXY  Offload work from your users  Make your service faster

PLACEMENT Cache and Proxy at edge of network

Thanks