DZone Refcardz

Refcardz Spotlight

Refcard #275

Kubernetes Security

This Refcard will teach you the essentials of security in Kubernetes, addressing topics like container network access, user authorization, service token access, and...

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Refcard #206

Angular Essentials

This Refcard will teach you about the essential pieces of Angular and the main concepts behind working with this ever-growing platform for web-based applications...

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Refcard #274

Temporal Data Processing

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Refcard #230

Java Containerization

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Refcard #153

Apache Cassandra

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Refcard #093

Lean Software Development

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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

232.7k 739.8k

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 Java 8 features.

Cay Horstmann

146.4k 416.7k

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

146.5k 331.9k

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

129.4k 239.3k

Unlocking Unobtrusive JavaScript

Introduces Ajax, a group interrelated techniques used in client-side web development for creating asynchronous web applications.

Dave Crane

104.6k 226.2k

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

103.7k 280.4k

Understanding the Core Concurrency Concepts

This Refcard will help Java developers working with multi-threaded programs to understand core concurrency concepts and how to apply them. Overview the key aspects of the Java language and get references on the core library.

Igor Sorokin

111.8k 263.2k

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

108.4k 293.4k

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

94.1k 212.5k

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

96.2k 374.1k

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

85.8k 239.3k