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Spring Boot 4 Performance in Practice
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About
About the Book
Most performance books teach you what the knobs do. This one teaches you which knobs to turn, and proves it with numbers.
I take CinéTrack, a real Spring Boot 4 monolith, and push it from its baseline throughput to fifty times that over twenty-eight chapters. Every chapter starts with a profiler, finds an actual bottleneck, applies a single change, and measures the result side by side. Some changes buy 30%. Some buy 3%. Some buy nothing. I say so.
You will learn the measurement discipline that separates engineers who tune from engineers who guess: how to read a flame graph, how to interpret p99 latency, how to tell a GC problem from a thread-pool problem from a query problem before you touch a line of code.
Then you will learn the tuning stack: virtual threads, ZGC, Hibernate batch loading, connection pool sizing, Redis caching, Kafka back-pressure, GraalVM native image. Not as a menu of options but as a sequence of decisions, each grounded in what the profiler actually showed.
For engineers who have built something with Spring Boot and now have to make it fast.
Author
About the Author
Umur Inan
Umur Inan is a Principal Software Engineer with 15 years of experience building backend systems across enterprise, government, and high-growth environments. He specializes in microservices architecture, distributed systems, and cloud-native development, with deep expertise in Spring Boot, Kafka, and Kubernetes. Based in New York City, he has shipped products across five countries and holds a Master's in Computer Science and a Bachelor's in Computer Engineering.
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