Spring Boot FAQ: Top Questions

Spring Boot's auto-configuration attempts to automatically configure your Spring application based on the libraries present on the classpath. It uses @Conditional annotations internally to make smart decisions.

🗺️ Step-by-Step:

1. Spring Boot scans classpath at startup.
2. Matches configuration conditions (e.g., missing beans).
3. Applies default configurations if appropriate.

📘 Example:

spring.datasource.url=jdbc:mysql://localhost:3306/test
spring.datasource.username=root
spring.datasource.password=pass

🏆 Expected Output:

Spring Boot configures DataSource bean for MySQL.

🛠️ Use Cases:

• Rapid application setup without writing config.
• Overriding only necessary properties via application.properties.
• Plug-and-play modules like JPA, Web, Security, etc.