Java & Spring Boot Enterprise Engineering Bootcamp Certificate

Checkpoint 1: Build a layered Spring Boot REST service with Java, Maven, validation, exception handling and a clean controller/service/repository boundary.
Checkpoint 2: Persist a real domain in PostgreSQL using Spring Data JPA; add schema constraints, transactions and migration-ready database configuration.
Checkpoint 3: Add authentication and role/permission authorization; protect sensitive endpoints and document threat boundaries and failure behavior.
Checkpoint 4: Write unit and integration tests for business logic, persistence and REST contracts; run them automatically and capture reproducible evidence.
Checkpoint 5: Split one workflow into two services and add asynchronous Kafka messaging with idempotency, retries and a dead-letter/failure strategy.
Checkpoint 6: Containerize the system, instrument health/metrics/logs, load-test a key endpoint and demonstrate one controlled dependency failure plus recovery.

Day 1: Frame an enterprise workflow, domain model, API contract, SLAs and security roles; create repo, ADRs and local Docker/Postgres environment.
Day 2: Implement core Java domain logic and layered REST endpoints with validation, exception mapping and deterministic tests.
Day 3: Add JPA/PostgreSQL persistence, transactions and realistic queries; verify constraints and failure behavior with integration tests.
Day 4: Add Spring Security authentication/authorization and test both allowed and denied paths; document trust boundaries and secrets handling.
Day 5: Introduce a second service and Kafka event flow; prove idempotency, retries, consumer failure handling and eventual consistency behavior.
Day 6: Containerize and observe the system; add health checks, metrics/logs, a small load test and an injected database/broker failure with recovery.
Day 7: Publish repo, API documentation, architecture/sequence diagrams, test report, event-flow evidence, load/failure results, demo video and runbook.