RailsConf Europe talk on MapReduce and EC2.

1. EC2, MapReduce,
and Distributed Processing
Jonathan Dahl
(and Rail Spikes,
Slantwise,
Zencoder,
etc.)

2. distributed processing /dis'trib'ut'ed prŏs'ěs'ĭz/
noun Refers to any of a variety of computer
systems that use more than one computer, or
processor, to run an application. This includes
parallel processing, in which a single computer
uses more than one CPU to execute programs.
More often, however, distributed processing refers
to local-area networks (LANs) designed so that a
single program can run simultaneously at various

3. asynchronous processing
/a·syn·chro·nous prŏs'ěs'ĭz/ noun Computations
that run independently of each other, without
requiring constant synchronization. Each operation