Webassembly For Cloud
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WebAssembly for Cloud
Journey into the amazing world of WebAssembly (Wasm) and learn about how it can be applied on the cloud. This book is an introduction to Wasm aimed at professionals accustomed to working with cloud-related technologies such as Kubernetes and Istio service mesh. Author Shashank Jain begins with an introduction to Wasm and its related tooling such as wasm-bindgen and wapc. He then walks you through code examples using Rust, Golang, and JavaScript to demonstrate how they can be compiled to Wasm and consumed from Wasm runtimes deployed standalone, as well as on the cloud. You will see how a wasm module can be run through an http interface, and how Wasm fits into CNCF projects such as Kubernetes and Istio service mesh. After that, you’ll learn how the polyglot nature of WebAssembly can be leveraged through examples written in languages like Rust and consumed via Golang and JavaScript, with a focus on how WebAssembly allows interoperability between them. You’ll gain an understanding of how Wasm-based modules can be deployed inside Linux containers and orchestrated via Kubernetes, and how Wasm can be used within the Istio proxy to apply rules and filters. After reading this book, you’ll have the knowledge necessary to apply WebAssembly to create multi tenanted workloads which can be polyglot in nature and can be deployed on cloud environments like Kubernetes. What You Will Learn Understand how Wasm can be used for server-side applications Learn about Wasm memory model and Wasm module layout How communication between host and Wasm module is facilitated The basics of Wasm sandboxing and security The fundamentals of tooling around Wasm, such as WAT and Wasm-pack Create a Wasm module in Rust and consume it from JavaScript, Rust and Golang. Grasp how Kubernetes can be used to orchestrate Wasm-based workloads How Wasm fits into service mesh Who Is This Book For Software developers/architects who are looking to hone their skills in virtualization and explore alternatives to Docker and container-based technologies for their workload deployments. Readers should have a basic programming background in languages such as Rust and Golang to get the most out of this book.
WebAssembly Cloud for SaaS Engineering
"WebAssembly Cloud for SaaS Engineering" "WebAssembly Cloud for SaaS Engineering" is an authoritative guide for architects, developers, and technical leaders who seek to harness the transformative potential of WebAssembly (Wasm) in cloud-native Software-as-a-Service environments. Spanning foundational concepts to advanced deployment patterns, the book meticulously unpacks the Wasm ecosystem—including binary architecture, state management, performance optimization, and robust security primitives—laying the groundwork for modern, scalable, and secure SaaS delivery. The book explores the seamless integration of WebAssembly into SaaS architectures, presenting proven patterns for microservices, multi-tenancy, extensibility, and service mesh orchestration. Readers will discover strategies for leveraging Wasm’s isolation guarantees to achieve secure tenant separation, delivering elastic scalability, and empowering end-users with custom plugin frameworks, all while navigating the intricacies of networking, I/O, and distributed system operations in the cloud. With practical workflows, automation toolchains, and a strong focus on security, compliance, and governance, this volume covers module lifecycle management, CI/CD pipelines, advanced observability, automated operations, and capacity planning. Real-world case studies, reference architectures, and insights into emerging trends—such as AI/ML integration, quantum-safe cryptography, and sustainable computing—round out this essential resource for building resilient, future-ready SaaS platforms with WebAssembly at their core.
WebAssembly 2.0 Essentials, Second Edition
This book is for you if you're tired of watching JavaScript struggle with complicated calculations while your users get impatient. I wrote this second edition because WebAssembly 2.0 changes everything, and I wanted to show you exactly how to use it without the usual technical book problems. The first thing we'll do is go through the basics, like memory management and control flow, which are the most important. Then we'll move on to putting together C, C++, Rust, and Python into Wasm modules that actually work. I'll show you how to use multi-threading, profiling and optimisation techniques that I've used in real projects, not just theoretical exercises. I know a lot of you have old Wasm 1.0 code, so I've written a whole chapter about how to move it over without causing any problems. And we'll also learn how to use WebAssembly in other ways, not just in browsers. You'll learn to work with Dapr for distributed microservices, deploy on Kubernetes, and build cloud-native applications that scale well. There is working code in every chapter that you can use right away. There is no unnecessary information, just practical techniques that solve real problems. I've figured out the tricky parts and the things that can go wrong, and I'm sharing them what actually works. By the time you finish this book, it will have taught you everything you need to build WebAssembly applications so quickly that people will be amazed. Key Features Use WebAssembly, manage memory, and control the flow of a program. Put together C, C++, Rust, and Python into high-performance WebAssembly modules using Emscripten. Build advanced multi-threaded apps using atomic operations, shared memory and thread-safe synchronization patterns. Migrate old Wasm 1.0 projects to version 2.0 using proven strategies. Combine WebAssembly with Dapr for microservices using patterns for managing data and sending messages. Deploy and scale Wasm workloads on Kubernetes clusters with complete control over configuration and secrets management. Make performance better by using systematic profiling and advanced compilation techniques for production apps. Take care of module imports, exports, and JavaScript interoperability. Use tables, memory semantics and dynamic dispatch mechanisms for complex logic. Manage networking, security, monitoring, and debugging for WebAssembly cloud-native deployments at scale. Table of Content Introduction to WebAssembly Fundamentals of WebAssembly Programming WebAssembly Modules and Semantics Bridging WebAssembly with High-Level Languages Advanced WebAssembly Tools and Techniques Advanced Performance Optimization Practical Migration to Wasm 2.0 Using WebAssembly with Dapr Running WebAssembly Apps on Kubernetes