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COMPOSITION Imagine a software firm that is composed of different Business Units (or departments) like Storage BU, Networking BU. Automobile...

ARM architecture ARM is a family of instruction set architectures for computer processors based on a reduced instruction set computing (...

There are four different ways to create objects in java 1. The new keyword 2. The Class.forName() 3. The clone() method 4. The object des...

Personal Package Archives (PPA) allow you to upload Ubuntu source packages to be built and published as an apt repository by Launchpad. ...

Model View ViewModel Model View ViewModel Model View ViewModel (MVVM) is an architectural pattern for software development. MVVM is a var...

    Lambda expressions     Remove the Permanent Generation     Small VM     Parallel Array Sorting     Bulk Data Operations for Collectio...

SOLID In computer programming, SOLID (Single responsibility, Open-closed, Liskov substitution, Interface segregation and Dependency inver...

What Happened to IPv5? IPv5 never became an official protocol. Internet Stream Protocol (ST) was considered IP version five by industry r...

Performing a Cost-Benefit Analysis Cost-benefit analyses help you to     Decide whether to undertake a project or decide which of seve...

Server Form Factors form factor refers to the size, shape, and packaging of a hardware device. Server computers typically come in one of ...

Total Cost of Ownership (TCO) is an analysis meant to uncover all the lifetime costs that follow from owning certain kinds of assets. Owner...

The servers themselves are 1.5U high, half again as high as the normal 1-U rack, Facebook executives said. That allows Facebook to build mo...

A server architecture that houses multiple server modules ("blades") in a single chassis. It is widely used in datacenters to s...

Bitcoin Bitcoin is a peer-to-peer payment system introduced as open source software in 2009 by developer Satoshi Nakamoto The digital cu...

ICANN The Internet Corporation for Assigned Names and Numbers  is a nonprofit organization that coordinates the Internet's global dom...

Proof-of-work A proof-of-work (POW) system (or protocol, or function) is an economic measure to deter denial of service attacks and other...

Layer 7 DDoS attack (L7 DDoS attack) Layer 7 DDoS attacks are some of the most difficult attacks to mitigate against because they mimic hu...

Spring JSR-250 Annotations Spring also JSR-250 based annotations which include @PostConstruct, @PreDestroy and @Resource annotations. Th...

Suppose you are developing a course management system for a training center. The first class you create for this system is Course. This c...

Hibernate's own connection pooling algorithm is, however, quite rudimentary. You should use a third party pool for best performance a...

Automatically validates or exports schema DDL to the database when the SessionFactory is created. With create-drop, the database schema wil...

Defining a custom converter in JSF is a three step process 1    Create a converter class by implementing javax.faces.convert.Converter in...

Jetty is fully hot deployable, but does not have any native hot deployers What this means is that Jetty contexts, servlets and filters ma...

Code Bubbles Code Bubbles is a front end to Eclipse designed to simplify programming by making it easy for the programmer to define and u...

JREAP The Joint Range Extension Applications Protocol ("JREAP") extends the range of Tactical Data Link by permitting tactical ...

Extensible Messaging and Presence Protocol (XMPP) a communications protocol for message-oriented middleware based on XML (Extensible Mark...

Should I use a Rules Engine? commands in sequence with conditionals and loops, it provides a list of production rules. Each rule has a co...

Enterprise resource planning Enterprise resource planning (ERP) is business management software—usually a suite of integrated application...