Spring Boot

Project Initialization

Setup with SDKMAN

curl -s "https://get.sdkman.io" | bash
source "$HOME/.sdkman/bin/sdkman-init.sh"
sdk install java 17.0.10-zulu
sdk install springboot

Create New Project

spring init my-app --build=maven --java-version=17 --group-id org.jyasu \
--boot-version=3.2.2 --packaging jar --extract --force \
--dependencies=web,lombok,docker-compose

Common Dependencies

web                    # Web (Spring MVC + Embedded Tomcat)
lombok                # Boilerplate reduction
docker-compose        # Docker Compose support
spring-ai-openai      # OpenAI integration
spring-ai-vectordb-elasticsearch  # Elasticsearch vector store
spring-ai-vectordb-redis          # Redis vector store
spring-ai-vectordb-mongodb-atlas  # MongoDB vector store
postgresql            # PostgreSQL JDBC driver
data-jpa              # Spring Data JPA
actuator              # Production monitoring
distributed-tracing   # Tracing support
data-cassandra        # Cassandra support
data-mongodb          # MongoDB support
graphql               # GraphQL support
data-elasticsearch    # Elasticsearch support
data-redis            # Redis support
kafka                 # Kafka messaging
amqp                  # RabbitMQ support
cloud-starter-vault-config  # Vault configuration
native                # Native image support
spring-shell          # Spring Shell

---

Spring Boot Actuator Endpoints

🔗 Official Documentation

| Endpoint | Description | |----------|-------------| | /actuator/health | Application health status (UP/DOWN) with optional details | | /actuator/info | Arbitrary application info from application.properties | | /actuator/metrics | JVM memory, CPU, HTTP requests, and custom metrics | | /actuator/env | Complete environment properties and configuration | | /actuator/beans | All Spring beans in the application context | | /actuator/mappings | All @RequestMapping paths and handlers | | /actuator/threaddump | Thread dump with stack traces | | /actuator/loggers | Runtime log level viewing and modification | | /actuator/httptrace | HTTP request/response trace (last 100 by default) | | /actuator/auditevents | Audit events for security and changes | | /actuator/scheduledtasks | Scheduled task information | | /actuator/heapdump | JVM heap dump download (if enabled) | | /actuator/shutdown | Graceful application shutdown (must be explicitly enabled) |

Enable/Configure Endpoints

# application.properties
management.endpoints.web.exposure.include=health,info,metrics
management.endpoint.health.show-details=always
management.endpoint.shutdown.enabled=true

Health Indicators

# Check health
curl http://localhost:8080/actuator/health

# Health with details
curl http://localhost:8080/actuator/health/details

# View all endpoints
curl http://localhost:8080/actuator