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  • The term "DevOps" was coined as a combination of developers and operations. According to Wikipedia: DevOps is a term used to refer to a set of practices... More

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  • We use many Linux command lines every day. We know some tricks from the web, but if we don't practice them, we may forget them. I've decided to make a list of... More

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Continuous Integration and Delivery are best described by Martin Fowler: “Continuous Integration is a software development practice where members of a team integrate their work...


When you have a billion users, people notice. That’s where our story about DevOps and Yahoo! starts. For Kishore Jalleda and Gopal Mor, both engineers at Yahoo!, when something goes...


Mock Frameworks vs. Microsoft Fakes


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Design Patterns
Learn design patterns quickly with Jason McDonald's outstanding tutorial on the original 23 Gang of Four design patterns, including class diagrams, explanations, usage info, and real world examples.
203.2k 572.6k
Core Java
Gives you an overview of key aspects of the Java language and references on the core library, commonly used tools, and new Java 8 features.
125.3k 341.5k
Getting Started with Ajax
Introduces Ajax, a group interrelated techniques used in client-side web development for creating asynchronous web applications.
101.3k 210k
Getting Started with Git
This updated Refcard explains why so many developers are migrating to this exciting platform. Learn about creating a new Git repository, cloning existing projects, the remote workflow, and more to pave the way for limitless content version control.
114.6k 268.6k
Spring Configuration
Catalogs the XML elements available as of Spring 2.5 and highlights those most commonly used: a handy resource for Spring context configuration.
103k 260.4k
Foundations of RESTful Architecture
The Representational State Transfer (REST) architectural style is a worldview that elevates information into a first-class element of architectures. REST allows us to achieve the architectural properties of performance, scalability, generality, simplicity, modifiability, and extensibility. This newly updated Refcard explains main HTTP verbs, describes response codes, and lists libraries and frameworks. It also gives additional resources to further explore each topic.
98.9k 159.6k
Core CSS: Part I
Covers Core principles of CSS that will expand and strengthen your professional ability to work with CSS. Part one of three.
89.8k 195.6k
Scrum is a framework that allows people to productively and creatively deliver products of the highest possible value. With over 70% of Agile teams using Scrum or Scrum hybrid, learn more about its benefits in managing complex product development. This newly updated Refcard explores the details of Scrum, including theory, values, roles, and events. It also includes a sample of a popular approach to deliver Integrated Increments in a scaled environment.
91.1k 239.1k
jQuery Selectors
Introduces jQuery Selectors, which allow you to select and manipulate HTML elements as a group or as a single element in jQuery.
92.9k 353.8k
Core Java Concurrency
Helps Java developers working with multi-threaded programs understand the core concurrency concepts and how to apply them.
89.7k 187.8k
Getting Started with Eclipse
Eclipse IDE is a cross-platform, multi-purpose, open-source Integrated Development Environment. It is widely used to develop projects in Java, JavaScript, PHP, C++, Scala, and many others. This newly updated Refcard breaks down installing, setting up, and getting started with Eclipse. It also covers productivity tips, creating new projects and files, accessing Source Control Managers, and debugging configurations.
78.6k 210k
Core CSS: Part II
Covers Core principles of CSS that will expand and strengthen your professional ability to work with CSS. Part two of three.
73.3k 140.3k
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