How does Spring Boot decide the order of auto-configurations? Spring Boot’s auto-configuration order looks magical from the outside, but internally it follows a very deterministic algorithm based on class loading,…
Why does @Value sometimes fail to inject properties? @Value failing to inject properties is one of the most confusing Spring problems because it often fails silently or only in specific…
What happens if @PostConstruct throws an exception? When a @PostConstruct method throws an exception in Spring, it is treated as a fatal bean initialization failure — and depending on where…
How do you detect bean initialization issues in large applications? Detecting bean initialization issues in large Spring applications is one of the most important real-world debugging skills — because most…
Why does a Spring Boot app consume more memory over time? 1. JVM Memory Model (Important Foundation) Spring Boot runs on the JVM, which manages memory automatically. Main JVM Memory…
