Java Web Internals: Unlock the secrets of Java web servers, frameworks, and application architecture

“The best developers of the future will have a deep appreciation for the fundamentals that make great software possible, and also deeply enjoy the craft of development. This book, built on Professor Isidro's beliefs of the importance of fundamentals and on having fun developing software, gives you both.” – Bruno Souza Free with your book: DRM-free PDF version + access to Packt's next-gen Reader* Key FeaturesBuild a multithreaded HTTP server and application container using Java socketsUnderstand and replicate the internal mechanics of Tomcat and Jakarta EE, and Spring featuresDevelop a modular Java framework with annotation-based routing and dependency injectionPurchase of the print or Kindle book includes a free PDF eBookBook DescriptionEver wondered how web servers like Tomcat process requests, or what really happens behind frameworks such as Spring? This book takes you beneath the surface of Java web development to uncover the why behind the tools you use every day. Rather than focusing solely on coding recipes, this book emphasizes the underlying concepts and design principles that govern how web servers and frameworks operate. Starting with low-level socket programming, you’ll build a multithreaded HTTP server from the ground up and extend it into a lightweight application server capable of handling dynamic content. Along the way, you’ll master HTTP request parsing, response generation, servlet-like request handling, and Java reflection and annotations for metaprogramming. As you progress, you’ll evolve this infrastructure into your own Java framework with embedded Tomcat, annotation-driven routing, object serialization with Jackson, and basic dependency injection modeled on Jakarta CDI. By the end of this journey, you’ll understand the principles behind them, enabling you to reason about system design, troubleshoot complex issues, and apply these concepts across frameworks and programming languages.*Email sign-up and proof of purchase requiredWhat you will learnImplement a multithreaded web server using Java socketsDecode and construct HTTP requests and responses manuallyBuild an application container to serve dynamic Java classesSerialize and deserialize JSON data using JacksonStructure projects with modular static and dynamic contentReplicate the internal mechanics of Tomcat, Jakarta EE, and Spring featuresManage lightweight session handling and routing logicCreate and deploy a complete custom Java web frameworkWho this book is forJava developers, computer science students, and educators seeking a deep, hands-on understanding of web server internals and application framework design. Prior knowledge of Java and basic networking concepts is recommended.Table of ContentsNetworks, Protocols, and PacketsWorkings of a Web Server – A Case StudyImplementing a Simple Web ServerWeb Servers vs Application ServersDeep Dive into Simple Web Container ImplementationSimple Web Container Improvements and ExpansionsWhy Create a Web FrameworkWeb Frameworks - The Necessary Abstraction for Professional DevelopmentDetailing the SimpleWebFramework ImplementationThe Emergence of Dependency Injection and Its Application in SimpleWebFrameworkCreating the First Application with SimpleWebFramework Read more