SEDA: An Architecture for Scalable, Well-Conditioned Internet Services Matt Welsh, David Culler, and Eric Brewer UC Berkeley Computer Science Division mdw@cs.berkeley.edu http://www.cs.berkeley.edu/~mdw/proj/seda SOSP'01, Lake Louise, Canada 1 Internet Services Today Massive concurrency demands • Yahoo: 1.2 billion+ pageviews/day • AOL web caches: 10 billion hits/day Load spikes are inevitable (t