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Refcard #263

Messaging Infrastructure for IoT at Scale

IoT technology is all around us and can no longer be ignored. At the core of IoT technology is the messaging infrastructure. Download this Refcard to learn more...

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Refcard #262

Introduction to DevOps Analytics

Discover the hidden value of using historical data to analyze and estimate a probabilistic measure of the success of a new release. This Refcard goes in-depth on the...

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Refcard #261

Improving Web Performance With Varnish

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Refcard #204

Apache Spark

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Refcard #260

REST API Security

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Refcard #259

Test Design Automation

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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

225.6k 697.1k

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

142.3k 399.5k

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

140.9k 319.5k

Unlocking Unobtrusive JavaScript

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

Dave Crane

104k 222.2k

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

113.5k 205.5k

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

101.5k 273k

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

107.2k 283.6k

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

106.7k 241.4k

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

93.2k 208.5k

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

95.5k 369k

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

85k 234.9k