General

• OpenSUSE project page: http://en.opensuse.org/Build_Service/Redirector
• GeoIP: http://www.maxmind.com/app/ip-location

About Metalinks

• http://www.metalinker.org/
• Transparent negotiation of metalinks: http://groups.google.com/group/metalink-discussion/web/transparent-metalinks

About CDNs, theory, AS/IP mapping, ...

Some papers I found interesting.

• Towards an Accurate AS-Level Traceroute Tool (2003): http://www.routeviews.org/papers/AS_traceroute.pdf
• Predicting Internet Network Distance with. Coordinates-Based Approaches (2002): http://www.cs.rice.edu/~eugeneng/papers/INFOCOM02.pdf
• IDMaps: A Global Internet Host Distance Estimation Service (2001): http://idmaps.eecs.umich.edu/papers/ton01.pdf
• On the scale and performance of cooperative web proxy caching (1999): http://www-cse.ucsd.edu/classes/fa01/cse222/papers/wolman-coopcache-sosp99.pdf

An interesting and related research topic is the reasonability of P2P traffic with regard to network topology; called the ''Application-Layer Traffic Optimization (ALTO)'' problem. See http://alto.tilab.com/. (See P2P in wikipedia for overview about swarm downloading technologies.)

Practical hints for web server operators

• High performance web serving: http://www.stdlib.net/~colmmacc/Apachecon-EU2005/scaling-apache-handout.pdf
• Clever load sharing and failover through IP clustering: http://www.linux-ha.org/ClusterIP