Why Spring’s Bean Scanning Can Trigger Unresolvable Circular References (and How to Fix It)
This article examines how Spring Boot 2.0.3 resolves (or fails to resolve) setter‑based circular dependencies, explores bean definition scanning order, bean definition overriding, and instantiation sequence that can lead to an “unresolvable circular reference” error, and then shifts to explain ZGC’s mark‑compact algorithm, its evolution before and after JDK 16, and its performance characteristics.
