Tutorial Series

Getting Started With Cloud Computing

This curriculum introduces open-source cloud computing to a general audience along with the skills necessary to deploy applications and websites securely to the cloud.

Conceptual Article

SOLID: The First 5 Principles of Object Oriented Design

SOLID is an acronym for the first five object-oriented design (OOD) principles by Robert C. Martin. In this article, you will be introduced to each principle individually to understand how SOLID can help make you a better developer.

Tutorial Series

JavaScript Design Patterns

Every developer strives to write maintainable, readable, and reusable code. Code structuring becomes more important as applications become larger. Design patterns prove crucial to solving this challenge - providing an organization structure for common issues in a particular circumstance. The design pattern below is only one of many useful patterns that can help you level up as a JavaScript developer. For the full set, see JavaScript Design Patterns .

Tutorial

UFW Essentials: Common Firewall Rules and Commands

UFW (uncomplicated firewall) is a firewall configuration tool that runs on top of `iptables`, included by default within Ubuntu distributions. It provides a streamlined interface for configuring common firewall use cases via the command line. This cheat sheet-style guide provides a quick reference to common UFW use cases and commands, including examples of how to allow and block services by port, network interface, and source IP address.

Tutorial

An Introduction to OAuth 2

OAuth 2 is an authorization framework that enables applications to obtain limited access to user accounts on an HTTP service, such as Facebook, GitHub, and DigitalOcean. It works by delegating user authentication to the service that hosts the user account, and authorizing...

Tutorial Series

Introduction to GitHub and Open-Source Projects

Open-source projects that are hosted in public repositories benefit from contributions made by the broader developer community, and are typically managed through Git. This tutorial series will guide you through selecting an open-source project to contribute to, making a pull request to a Git repository through the command line, and taking steps to follow up on your pull request.

Tutorial

How To Use Axios with React

Axios is a lightweight, promise-based HTTP client. In this article, you will explore examples of how to use Axios to access the popular JSON Placeholder API within a React application.

Tutorial

Java Interview Questions