Overview

Tired of slow cold starts, bulky containers, and persistent security worries in your cloud deployments? Ready to unlock unprecedented speed, security, and efficiency for your microservices? The cloud-native landscape is evolving. While containers revolutionized deployment, they come with inherent overhead and security challenges. Now, a powerful new paradigm is emerging: Server-Side WebAssembly (Wasm) with Rust. This combination offers near-instant startups, ironclad security sandboxing, and unparalleled portability, promising to redefine how we build and run applications in the cloud and at the edge. Server-Side WebAssembly with Rust is your practical, hands-on guide to mastering this transformative stack. Forget theoretical discussions - this book dives deep into the battle-tested patterns, architectures, and operational practices you need to build production-ready, blazing-fast, and fundamentally secure Wasm microservices. Written for experienced Rust developers, cloud engineers, and architects looking to stay ahead of the curve, this book provides a comprehensive roadmap, taking you from foundational concepts to advanced deployment strategies. Inside, you'll discover how to: Eliminate Cold Starts: Understand why Wasm's microsecond boot times are a game-changer for Serverless and Edge computing. Master Sandboxing & Security: Leverage Wasm's capability-based security and Rust's memory safety for truly isolated, secure-by-default services. Architect for Wasm: Design microservice patterns (like Actors and Streams) specifically tailored for the Wasm sandbox, moving beyond traditional container-based thinking. Optimize Your Toolchain: Set up efficient Cargo workspaces, choose the right crates, and build robust CI/CD pipelines for reproducible Wasm artifacts. Achieve Peak Performance: Implement zero-copy data flows, optimize binary protocols (like FlatBuffers), and tune CPU, memory, and I/O for maximum throughput. Deploy Anywhere: Integrate Wasm services into Cloud platforms, Kubernetes, and Edge/CDN environments, choosing the right runtime model (Container, Serverless, or Wasm-Native). Ensure Reliability: Implement comprehensive observability (logs, metrics, traces), conduct chaos testing, define SLOs, and automate incident response with runbooks. Enforce Governance: Utilize Policy as Code (PaC) with Open Policy Agent (OPA) to manage RBAC, compliance, and security rules automatically. Migrate Safely: Follow a step-by-step guide to migrate existing services to Wasm with minimal risk using patterns like the Strangler Fig. Packed with practical examples, clear explanations, and real-world insights, this book doesn't just explain what server-side Wasm is - it shows you how to wield it effectively. Learn to build applications that are not only faster and more secure but also drastically more efficient and cost-effective. Stop fighting container limitations and start building the future of cloud-native applications. Grab your copy of Server-Side WebAssembly with Rust today and revolutionize your microservice architecture!

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