Business Impact
Spring Boot's embedded server and auto-configuration enable rapid deployment of enterprise-grade CRM systems with built-in security, monitoring, and database management — reducing infrastructure costs.
Features
- RESTful API with Spring Web MVC
- JPA/Hibernate ORM with PostgreSQL
- Spring Security with role-based access
- Bean Validation for data integrity
- DTO pattern for API responses
- Global exception handling
- Spring Data JPA repositories
- Actuator health endpoints
API Structure
GET /api/v1/customers # List all customers
POST /api/v1/customers # Create customer
GET /api/v1/customers/{id} # Get customer by ID
PUT /api/v1/customers/{id} # Update customer
DELETE /api/v1/customers/{id} # Delete customer
GET /api/v1/contacts # List contacts
POST /api/v1/contacts # Create contact
GET /api/v1/deals # List sales deals
GET /api/v1/deals/{id}/timeline # Deal historyController Example
@RestController
@RequestMapping("/api/v1/customers")
public class CustomerController {
private final CustomerService service;
@GetMapping
public ResponseEntity> getAll() {
return ResponseEntity.ok(service.findAll());
}
@PostMapping
public ResponseEntity create(
@Valid @RequestBody CustomerCreateRequest request) {
return ResponseEntity.status(201)
.body(service.create(request));
}
} 