Overview

Build fast, reliable, and maintainable RPC services in Rust. This book offers a practical guide to designing production-ready communication layers with Tonic, Tokio, and Tower, with a clear focus on throughput, correctness, and operational control. Across twelve carefully structured chapters, you will move from the basics of gRPC contracts and Protobuf design to advanced server and client architecture, streaming workflows, middleware composition, observability, security, and testing. The material is organized to help you understand not just how the pieces fit together, but why each design choice matters in real systems. What you will learn Design efficient gRPC interfaces and message schemas for Rust services Build Tonic servers and clients with Tokio based concurrency Implement unary, server streaming, client streaming, and bidirectional streaming patterns Compose Tower layers for authentication, authorization, rate limiting, and context propagation Handle errors consistently with clear status mapping and domain aware conversions Improve performance with backpressure control, buffering strategies, and reduced allocation overhead Add tracing, metrics, and structured logging for production visibility Configure TLS and secure metadata handling for real deployments Test middleware, streaming behavior, and end to end request flows with confidence The book also includes a full case study that ties everything together into a layered RPC service. You will see how protobuf contracts, service handlers, middleware stacks, client call patterns, and load validation work together in a realistic Rust application. Ideal for Rust developers, backend engineers, and platform teams who want to build service communication layers that scale cleanly under load, stay observable in production, and remain easy to evolve over time.

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