“Routing for Failure Recovery with Flowtable Management in Software-Defined Networks” is a book that provides a comprehensive guide to Software-Defined Networks (SDN) that focuses on routing, flowtable management, and failure recovery. The book covers the basics of SDN and different types of SDN architectures, with additional discussion of flowtable management, including forwarding rules placement, timeout and eviction, caching, and aggregation techniques. It also provides a thorough analysis of routing in SDN, including quality-of-service routing, SDN routing, and routing algorithms. The book’s significant contribution lies in its focus on failure recovery in SDN, covering different failure events, such as link failures, controller failures, and network congestion. The authors discuss the various failure detection mechanisms and recovery techniques, including proactive and reactive methods. This book is an ideal reference for students, researchers, and professionals who wish to understand the technical aspects of SDN and implement it in real-world scenarios. The authors combine theoretical concepts with practical examples and case studies, making it a useful guide for anyone interested in optimizing routing, Flowtable management, and failure recovery in SDN.