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Spring Cloud Gateway: Build Fast, Secure API Gateways
Paperback
Publisher: Independently Published
Published: Aug 9 2026
Pages: 230
Weight: 0.82
Height: 0.48 Width: 6.69 Depth: 9.61
Language: English
Picture this: It's 2:00 AM. Your phone buzzes relentlessly. User traffic has suddenly spiked due to a flash sale, and your legacy Netflix Zuul gateway is buckling under the pressure. Thread exhaustion. Your backend services are perfectly healthy, but your gateway can't accept any new connections. You're dropping requests and losing customers by the second.
I've been in that exact situation. I know the cold sweat, the frantic log-checking, and the heavy realization that an imperative, blocking gateway simply cannot survive in a high-throughput, modern web environment. That was the night I realized I had to rethink everything. I needed a system that could juggle tens of thousands of concurrent connections without breaking a sweat. I migrated our stack to Spring Cloud Gateway, and those 2:00 AM alerts finally stopped. This book is the exact roadmap I wish I had during that frantic migration.
What's inside
I've packed this guide with everything you need to confidently deploy, scale, and manage your API gateway:
- The Zuul Migration Blueprint: A step-by-step translation guide to seamlessly move your legacy blocking filters into the reactive world.
- Declarative Routing: Master application.yml configurations, predicates, and filters to direct traffic with surgical precision.
- Resilience Patterns: Implement Redis-backed token-bucket rate limiting to shield your microservices from sudden traffic spikes.
- Custom Reactive Filters: Learn how to write powerful GlobalFilter and GatewayFilter components to mutate headers, inspect payloads, and manage global CORS.
- Complete Sample Ecosystem: Gain full access to a companion GitHub repository using Docker, Maven, and Eureka, allowing you to run the code as you read.
I wrote this specifically for Java developers, Software Architects, and Backend Engineers who are already familiar with Spring Boot and want to build or modernize a microservices ecosystem. If you are struggling with legacy API gateways, dealing with latency bottlenecks, or simply want to master reactive programming at the edge, this book is built for you.
Stop letting an outdated edge layer become the bottleneck of your beautifully designed microservices. The modern web demands speed, resilience, and non-blocking performance. Are you ready to build a gateway that won't buckle under pressure?
Grab your copy today, dive into the code, and start transforming your architecture into a high-performance reactive powerhouse.
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