دانلود کتاب تسلط بر سرویس‌های وب RESTful با جاوا – راهنمای عملی برای ساخت APIهای REST امن و مقیاس‌پذیر آماده برای تولید

This book is a practical guide to designing, building, documenting, testing, and deploying RESTful APIs using modern Java frameworks. REST APIs have become a standard way of enabling communication between systems, especially in microservices and other distributed architectures. With Java being one of the most widely used languages for backend development, understanding how to build effective APIs with Java is a key skill for today’s developers. Throughout the chapters, you’ll explore hands-on techniques using Spring Boot, OpenAPI, and other popular tools and libraries. You’ll also gain exposure to containerization, observability, API security, and performance tuning – everything you need to create robust, scalable, and maintainable APIs. Whether you’re working in a start-up or an enterprise, the skills covered here will help you deliver high-quality backend services that meet modern development standards. This book is ideal for backend Java developers with a few years of experience who are looking to improve the design, performance, and scalability of their REST APIs. It’s also a valuable resource for tech leads and software architects involved in designing distributed systems. What this book covers: Chapter 1, Understanding RESTful Core Concepts, introduces the foundational principles of REST architecture and explains the different maturity levels of RESTful APIs. It also covers the role of JSON as a standard data format, outlines practical guidelines for designing effective APIs, and explores common use cases where REST is applied in real-world systems. Chapter 2, Exposing a RESTful API with Spring, focuses on designing and implementing a RESTful API using Spring Boot. You’ll begin by designing a simple Product API, then move on to building it step by step with Spring Boot, one of the most popular frameworks for Java-based web applications. This chapter provides hands-on experience in turning REST concepts into a working API. Chapter 3, Documenting Your API Effectively, explores the importance of clear and accurate API documentation in building reliable and maintainable services. You’ll learn how to use OpenAPI to standardize your API documentation and understand the differences between specification-first and code-first approaches. The chapter also walks you through documenting the Product API introduced earlier, ensuring it is both understandable and usable by other developers and systems. Chapter 4, Generating Code from OpenAPI, guides you through creating a full API based on an OpenAPI specification. You’ll start by defining the Order Management API specification, then generate the necessary code to jumpstart development. The chapter also covers organizing the project’s package structure, implementing the API controller, and integrating the Order Management API and the Product API introduced earlier. Chapter 5, Managing API Evolution, shows how to handle changes and updates to your APIs without disrupting existing users. You’ll learn about different versioning strategies, see how to implement versioning in the Product API, and explore best practices for managing API evolution to ensure your services remain reliable and backwards compatible. Chapter 6, Advanced API Concepts and Implementations, dives into key techniques for building robust and user-friendly APIs. You’ll explore advanced data handling methods such as pagination, filtering, and file upload/download through REST APIs. The chapter also covers HATEOAS to improve API navigation and introduces resilience patterns to make your APIs more reliable and fault-tolerant in real-world scenarios. Chapter 7, Securing Your RESTful APIs, focuses on protecting your APIs from unauthorized access and security threats. You’ll learn about authentication and authorization techniques, explore key security principles from OWASP, and understand how to address common vulnerabilities through the management of Common Vulnerabilities and Exposures (CVEs) to keep your APIs safe and trustworthy. Chapter 8, Testing Strategies for Robust APIs, explores both traditional API testing methods and the exciting impact of generative AI on the testing process. You’ll learn how AI tools such as ChatGPT are transforming test creation, making it faster, smarter, and more effective, while still covering essential testing types, tools, and best practices for building reliable APIs. Chapter 9, Monitoring and Observability, dives into best practices for logging and tracing in RESTful APIs. You’ll learn how structured logging, correlation IDs, and centralized filters help with effective troubleshooting, while distributed tracing tools such as Micrometer and OpenTelemetry provide deep visibility into service performance and request flows across distributed systems. Chapter 10, Scaling and Performance Optimization Techniques, covers essential strategies to improve the speed and scalability of RESTful APIs. You’ll learn about performance-focused design, leveraging Java’s virtual threads, using infrastructure effectively, and validating improvements through load testing to ensure your APIs handle growing demands efficiently. Chapter 11, Alternative Java Frameworks to Build RESTful APIs, provides a high-level overview of popular Java frameworks beyond Spring Boot. You’ll explore the benefits of standardization and the choice between imperative and reactive programming, and learn about Java EE, Jakarta EE, and MicroProfile. The chapter also includes practical examples using Quarkus and Helidon to show how REST principles apply across different tools. Chapter 12, Deploying APIs, guides you through the essential steps to move your Java RESTful APIs from development to production. You’ll explore deployment preparation, containerization with Docker, and the use of PaaS platforms. This chapter focuses on practical, beginner-friendly workflows that serve as a solid foundation for more advanced DevOps practices in the future.