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  • Recommendations Using Redis

    Refcard #242

    Recommendations Using Redis

    Unlike other in-memory data stores, Redis can persist your data to a disk and accommodate a wide variety of data structures. In this Refcard, learn to develop a...

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  • Getting Started With Vaadin Framework 8

    Refcard #085

    Getting Started With Vaadin Framework 8

    Vaadin gives you the opportunity to develop modern web applications that provide a great user experience and look great. Using a built-in selection of components,...

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Design Patterns
Building Maintainable and Scalable Software
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.
Jason McDonald
211.1k 619k
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Core Java
A Power-User's Guide to 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.
Cay Horstmann
131.4k 367.7k
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Getting Started with Git
The De Facto Standard For Version Control
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.
Matthew McCullough
130.1k 295.9k
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Getting Started with Ajax
Unlocking Unobtrusive JavaScript
Introduces Ajax, a group interrelated techniques used in client-side web development for creating asynchronous web applications.
Dave Crane
102.6k 215.4k
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Foundations of RESTful Architecture
REST Practices
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.
Brian Sletten
103.7k 180.1k
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Spring Configuration
Dependency Injection in a Nutshell
Catalogs the XML elements available as of Spring 2.5 and highlights those most commonly used: a handy resource for Spring context configuration.
Craig Walls
104.7k 268.1k
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Scrum
The Most Popular Agile Methodology
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.
Dave West
96.4k 258.5k
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Core CSS: Part I
First Steps in CSS
Covers Core principles of CSS that will expand and strengthen your professional ability to work with CSS. Part one of three.
Molly Holzschlag
91.5k 201.1k
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jQuery Selectors
The Core jQuery Reference
Introduces jQuery Selectors, which allow you to select and manipulate HTML elements as a group or as a single element in jQuery.
Bear Bibeault
94.2k 359.9k
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Core Java Concurrency
Understanding the Core Concurrency Concepts
Helps Java developers working with multi-threaded programs understand the core concurrency concepts and how to apply them.
Alex Miller
91.9k 199.1k
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Getting Started with Eclipse
Test and Debug Code With Java’s Leading IDE
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.
Mickael Istria
80.2k 224.9k
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Core CSS: Part II
Understanding Selectors
Covers Core principles of CSS that will expand and strengthen your professional ability to work with CSS. Part two of three.
Molly Holzschlag
74.6k 143.3k
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