...it has to process many trades with low latency. The system is built on the JVM platform and centers on a Business Logic Processor that can handle 6 million orders per second on a single thread. The Business Logic Processor runs entirely in-memory using event sourcing. The Business Logic Processor is surrounded by Disruptors - a concurrency component that implements a network of queues that operate without needing locks.
Facebook betrieb 2009 rund 30.000 Server für 300 Mio Nutzer, mittlerweile hätte sich die Zahl lt. DatacenterKnowledge.com mind. verdoppelt Wie stellt man sich 30.000 Server vor? http://dennis-wisnia.de/wordpress/wp-content/uploads/2010/06/serververgleich.png einen 50er-Block kann man sich als Rack vorstellen
- Lessons Learned, Survival-Stories etc. von Firmen mit Amazon-Infrastruktur Before 5 AM Eastern on April 21st, 2011, an outage started at EC2's northern Virginia datacenter that brought down hundreds of web 2.0 and social media websites including Foursquare, Springpad, Reddit, Quora, BigDoor and Hootsuite. Specifically, attempts to use Amazon's elastic-disk and database services hung, failed, or were slow. Service was restored to some parts of the datacenter (three of four "availability zones" in Amazon's terms) by late afternoon Eastern time that day