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Advanced Java Backend Developer Interview Prep
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Module 1
Day 1 — Spring Boot Internals and Production Configuration (3–4 hours)
Spring Boot Lifecycle Architecture
Trace Spring Boot startup through environment preparation, component scanning, bean creation, auto-configuration, and embedded-server initialization.
2
Implementing Dependency Injection in Services
Compare constructor, setter, and field injection, and refactor a service to use constructor injection.
3
Mastering Bean Lifecycle Management
Predict bean creation and destruction behavior from scope, lifecycle callbacks, and dependency relationships.
4
Debugging Spring Boot Auto-Configuration
Use Spring Boot’s condition evaluation report to explain why an auto-configured bean was or was not created.
Externalizing Application Configuration
Externalize application settings with profiles, environment variables, and type-safe @ConfigurationProperties.
6
Spring Boot Configuration Precedence with Profiles
Demonstrate configuration precedence by running a Java 17, Maven, and Spring Boot 3 application with separate local and container profiles.
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