API Engineering
Design REST APIs, structure DTOs, validate requests, handle errors consistently, and document endpoints clearly.
A practical home for backend engineering — from clean APIs and Java services to microservices, databases, cloud deployment, and system design.
// A small API. A solid foundation. @RestController @RequestMapping("/api/v1/orders") public class OrderController { private final OrderService orderService; public OrderController( OrderService orderService) { this.orderService = orderService; } @GetMapping("/{id}") public ResponseEntity<OrderDto> getOrder( @PathVariable Long id) { return ResponseEntity.ok( orderService.findById(id)); } }
Learn and build the pieces that make backend applications secure, maintainable, observable, and ready for real-world traffic.
Design REST APIs, structure DTOs, validate requests, handle errors consistently, and document endpoints clearly.
Explore service boundaries, API gateways, asynchronous messaging, caching, resilience, and service-to-service communication.
Work with SQL, indexes, transactions, ORM trade-offs, connection pools, and performance troubleshooting.
Core tools for building, testing, deploying, and operating production-ready services.
Use these as a starting point for hands-on practice. Add authentication, tests, observability, and deployment as you grow.
Products, carts, orders, user accounts, validation, pagination, and secure role-based access.
Separate services for orders and payments, event-driven workflows, retries, and idempotency.
Automate builds and tests, package services, deploy to a cluster, and add health checks and logs.
Backend-Dev.com is ready for your tutorials, project write-ups, API documentation, and engineering notes. Start with one useful resource and keep improving it.