Internals: How Spring Boot 3.3’s New AOT Compilation Reduces Startup Times by 40% for 50k LOC Apps

Internals: How Spring Boot 3.3’s New AOT Compilation Reduces Startup Times by 40% for 50k LOC Apps Spring Boot 3.3 introduces a revamped Ahead-of-Time (AOT) compilation pipeline, delivering up to 40% faster startup times for mid-sized applications (50k lines of code, or LOC). This article dives into the internal architecture changes driving this performance leap, benchmarks from real-world 50k LOC workloads, and practical steps to adopt the new AOT engine. What is AOT Compilation in Spring Boot?