http://www.purl.org/stefan_ram/pub/doc_kay_oop_en http://userpage.fu-berlin.de/~ram/pub/pub_jf47ht81Ht/begriff_objektorientierte_programmierung_de Alan Kay coined the phrase Object-Oriented Programming, but this is not his fault. He has repeatedly said that to him, OOP is about encapsulation and message passing, not inheritance and ontologies of types. But like so many other Cargo Cults in Computer Programming culture, OOP and inheritance are enchained like ancient mariner and albatross
Diagrammelemente werden hier mit Tastatur und einer einfachen Grammatik beschrieben = bessere Usability gegenüber anderen Klicki-Bunti-CASE-Tools; Fehlende Elemente lassen sich schnell direkt in UMLet mit Java programmieren. Ansonsten: http://astah.change-vision.com/en/index.html (formerly known as JUDE)
The visualization shows the history of commits in the Eclipse, Apache, PostgreSQL and Python project. Developers and files are represented as moving elements. When a developer commits a file, it lights up and flies towards that developer.
z.B. für stromsparenden Software-Router s.a. gebrauchtes WRAP-Board oder FOX-Board (für Anderes) oder http://www.soekris.com/
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IDE to CompactFlash adapters
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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
...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.