Spring Boot Actuator

Production Monitoring Endpoints

`spring-boot-starter-actuator` exposes production monitoring endpoints (`/actuator/health`, `/actuator/metrics`, `/actuator/env`).

Key Actuator Endpoints:

• /actuator/health: Checks database, disk space, and third-party service connectivity status.
• /actuator/metrics: Exposes JVM memory usage, garbage collection stats, and HTTP request rates for Prometheus/Grafana monitoring.
• /actuator/env: Inspects active Spring profiles and configuration environment variables.

Production Code Example:

management:
  endpoints:
    web:
      exposure:
        include: "health,info,metrics"
  endpoint:
    health:
      show-details: always

Key Architectural Concepts & Best Practices:

When working with Spring Boot Actuator in enterprise Spring Boot applications, keep these key architectural guidelines in mind:

• Separation of Concerns: Maintain a strict boundary between HTTP endpoints, service logic, and database persistence layers.
• Framework Conventions: Rely on Spring Boot auto-configuration defaults whenever possible, overriding settings only via application.yml or @Configuration classes when customized behavior is required.
• Production Monitoring & Reliability: Ensure proper exception handling, thread-safety, and resource cleanup to prevent memory leaks and unexpected runtime downtime.
• Developer Ergonomics: Write clean, self-documenting code with modern Java features (Records, Lambdas, Streams) to simplify code reviews and maintenance.

Summary Takeaway:

Mastering Spring Boot Actuator ensures that your Java & Spring Boot backend microservices remain maintainable, secure, and compliant with modern enterprise software engineering standards.