Test-Driven Development with Java. Create higher-quality software by writing tests first with SOLID and hexagonal architecture

Alan Mellor

Test-driven development enables developers to craft well-designed code and prevent defects. It’s a simple yet powerful tool that helps you focus on your code design, while automatically checking that your code works correctly. Mastering TDD will enable you to effectively utilize design patterns and become a proficient software architect.The book begins by explaining the basics of good code and bad code, bursting common myths, and why Test-driven development is crucial. You’ll then gradually move toward building a sample application using TDD, where you’ll apply the two key rhythms -- red, green, refactor and arrange, act, assert. Next, you’ll learn how to bring external systems such as databases under control by using dependency inversion and test doubles. As you advance, you’ll delve into advanced design techniques such as SOLID patterns, refactoring, and hexagonal architecture. You’ll also balance your use of fast, repeatable unit tests against integration tests using the test pyramid as a guide. The concluding chapters will show you how to implement TDD in real-world use cases and scenarios and develop a modern REST microservice backed by a Postgres database in Java 17.By the end of this book, you’ll be thinking differently about how you design code for simplicity and how correctness can be baked in as you go.

Argo CD in Practice. The GitOps way of managing cloud-native applications

Liviu Costea, Spiros Economakis, Alexander Matyushentsev

GitOps follows the practices of infrastructure as code (IaC), allowing developers to use their day-to-day tools and practices such as source control and pull requests to manage apps. With this book, you’ll understand how to apply GitOps bootstrap clusters in a repeatable manner, build CD pipelines for cloud-native apps running on Kubernetes, and minimize the failure of deployments.You’ll start by installing Argo CD in a cluster, setting up user access using single sign-on, performing declarative configuration changes, and enabling observability and disaster recovery. Once you have a production-ready setup of Argo CD, you’ll explore how CD pipelines can be built using the pull method, how that increases security, and how the reconciliation process occurs when multi-cluster scenarios are involved. Next, you’ll go through the common troubleshooting scenarios, from installation to day-to-day operations, and learn how performance can be improved. Later, you’ll explore the tools that can be used to parse the YAML you write for deploying apps. You can then check if it is valid for new versions of Kubernetes, verify if it has any security or compliance misconfigurations, and that it follows the best practices for cloud-native apps running on Kubernetes.By the end of this book, you’ll be able to build a real-world CD pipeline using Argo CD.

Amazon SimpleDB: LITE. A book and eBook that addresses: what is SimpleDB, how does it compare to relational databases, and how to get started?

Richard Helms, Prabhakar Chaganti, Rich Helms

3D Printing Designs: Design an SD Card Holder. Measurement basics to design and build a 3D printed object

Joe Larson

Want to model a 3D printed prototype of an object that needs to be replaced or broken? This book will teach you how to accurately measure objects in the real world with a few basic measuring techniques and how to create an object for 3D printing around the objects measured. In this book, you'll learn to identify basic shapes from a given object, use Vernier and Digital calipers and grid paper tracing techniques to derive measurements for the objects. With the help of measurements, you'll see to model these objects using Blender, organize the parts into layers, and later combine them to create the desired object, which in this book is a 3D printable SD card holder ring that fits your finger.

Mastering AutoCAD. Level up your AutoCAD skills with advanced methods and tools, including AutoCAD Web and Trace

Shaun Bryant, Jessica Langston, Jeanne Aarhus

AutoCAD helps you communicate your design intent by plotting your designs to drawings, in both paper and electronic format. But using AutoCAD can be daunting, even for an experienced user who wants to get their designs into the AutoCAD native DWG file format.Written by an Autodesk Certified Instructor at Platinum level with 30+ years of industry experience, this book will guide you on how to use new and existing AutoCAD tools to work smarter, not harder, and it will familiarize you with the processes needed to use AutoCAD much more effectively. As you work through the chapters, you’ll get used to these new methodologies in AutoCAD and build up muscle memory so that these skills become second nature. You’ll also take advantage of the author's expertise and experience, learning some highly effective AutoCAD tips and tricks along the way.By the end of this AutoCAD book, you’ll have gained valuable insights into the knowledge needed to confidently prepare for your Autodesk AutoCAD certification.

Learn OpenCV 4 By Building Projects. Build real-world computer vision and image processing applications with OpenCV and C++ - Second Edition

David Millán Escrivá, Vinícius G. Mendonça, Prateek Joshi

OpenCV is one of the best open source libraries available, and can help you focus on constructing complete projects on image processing, motion detection, and image segmentation. Whether you’re completely new to computer vision, or have a basic understanding of its concepts, Learn OpenCV 4 by Building Projects – Second edition will be your guide to understanding OpenCV concepts and algorithms through real-world examples and projects. You’ll begin with the installation of OpenCV and the basics of image processing. Then, you’ll cover user interfaces and get deeper into image processing. As you progress through the book, you'll learn complex computer vision algorithms and explore machine learning and face detection. The book then guides you in creating optical flow video analysis and background subtraction in complex scenes. In the concluding chapters, you'll also learn about text segmentation and recognition and understand the basics of the new and improved deep learning module.By the end of this book, you'll be familiar with the basics of Open CV, such as matrix operations, filters, and histograms, and you'll have mastered commonly used computer vision techniques to build OpenCV projects from scratch.

Generative AI Foundations in Python. Discover key techniques and navigate modern challenges in LLMs

Carlos Rodriguez, Samira Shaikh

The intricacies and breadth of generative AI (GenAI) and large language models can sometimes eclipse their practical application. It is pivotal to understand the foundational concepts needed to implement generative AI. This guide explains the core concepts behind -of-the-art generative models by combining theory and hands-on application.Generative AI Foundations in Python begins by laying a foundational understanding, presenting the fundamentals of generative LLMs and their historical evolution, while also setting the stage for deeper exploration. You’ll also understand how to apply generative LLMs in real-world applications. The book cuts through the complexity and offers actionable guidance on deploying and fine-tuning pre-trained language models with Python. Later, you’ll delve into topics such as task-specific fine-tuning, domain adaptation, prompt engineering, quantitative evaluation, and responsible AI, focusing on how to effectively and responsibly use generative LLMs.By the end of this book, you’ll be well-versed in applying generative AI capabilities to real-world problems, confidently navigating its enormous potential ethically and responsibly.

Raspberry Pi Mechatronics Projects HOTSHOT. Enter the world of mechatronic systems with the Raspberry Pi to design and build 12 amazing projects

Narasimha S Yamanoor, Srihari Yamanoor, Sai Yamanoor