Dabbaghi.com

In the previous post, i started explaining Auto-Configuration in Spring Boot. Her the second part.

Other Auto‑Configured Aspects in Spring Boot

Spring Boot also auto-configures many other modules. Same idea:

 add dependency → Spring Boot configures it.

---

1. Spring Security 

Add:

spring-boot-starter-security

Spring Boot will:

• Enable basic authentication
• Protect all endpoints
• Create default user

Default behavior:

• Username: user
• Password: shown in console

Minimal example:

@RestController

public class Hello {

    @GetMapping(„/hello“)

    public String hello() {

        return „secured“;

    }

}

Now /hello is protected automatically.

---

2. Spring Batch 

Add:

spring-boot-starter-batch

Spring Boot will:

• Configure job repository
• Setup transaction management
• Initialize batch tables (optional)

Example job:

@Bean

public Job job(JobBuilderFactory jobBuilderFactory) {

    return jobBuilderFactory.get(„demoJob“).start(step()).build();

}

You only define steps, Boot handles infrastructure.

---

3. Spring AOP (Aspect-Oriented Programming)

Add:

spring-boot-starter-aop

Spring Boot will:

• Enable proxy-based AOP
• Configure aspect processing

Example:

@Aspect

@Component

public class LogAspect {

    @Before(„execution(* com.example..(..))“)

    public void log() {

        System.out.println(„Method called“);

    }

}

No manual AOP setup needed.

---

4. Caching

Add:

spring-boot-starter-cache

Spring Boot will:

• Enable caching support
• Auto-configure cache manager (simple or provider if present)

Example:

@Cacheable(„users“)

public User getUser(Long id) {

    return loadFromDB(id);

}

Results cached automatically.

---

5. Scheduling

No dependency needed (included in core).

Enable:

@EnableScheduling

Example:

@Scheduled(fixedRate = 5000)

public void run() {

    System.out.println(„Runs every 5 seconds“);

}

Scheduler works immediately.

---

6. Actuator (Monitoring)

Add:

spring-boot-starter-actuator

Spring Boot will expose endpoints:

• /actuator/health
• /actuator/info
• /actuator/metrics

Useful for monitoring your app.

---

7. Validation

Add:

spring-boot-starter-validation

Spring Boot auto-configures:

• Hibernate Validator

Example:

public class User {

    @NotNull

    private String name;

}