Core learning path
General Java, HTTP, SQL, and tooling stay outside the numbered path. The course begins with why Spring exists, follows configuration from XML to modern Java, and then builds one production application on top of that container model.
Saved assessment progress
0 of 20 module quizzes attempted on this device.
The core sequence
Complete a stage when you can explain its mechanism, diagnose its common failure, and prove its outcome in the evolving application.
Separate Spring Framework from Boot, then trace starters, SpringApplication, component scanning, conditional auto-configuration, and back-off behavior.
Outcome
Trace application startup and explain which behavior belongs to Java, Spring Framework, or Spring Boot.
Begin with ordinary Java object construction, then see why IoC, dependency injection, XML bean definitions, Java configuration, and component scanning exist.
Outcome
Explain what makes an object a Spring bean and compare manual wiring, XML, @Bean methods, and component scanning.
Externalize settings, bind validated properties, select profiles, and keep secrets outside the artifact before infrastructure depends on them.
Outcome
Explain property precedence and fail startup when required configuration is absent or invalid.
Place controllers, application services, repositories, DTOs, validation, and error translation at explicit boundaries.
Outcome
Design a feature package with stable request, response, validation, and error contracts.
Connect database behavior to JPA, Hibernate, Spring Data repositories, the persistence context, fetching, transactions, locking, and query performance.
Outcome
Predict the SQL and transaction boundary behind repository and entity operations instead of treating JPA as magic.
Write structured, correlated logs and expose safe health, metrics, and tracing signals before tuning or distributing the system.
Outcome
Diagnose one request across logs, metrics, traces, and health endpoints without exposing sensitive operational data.
Choose the smallest useful test boundary: plain unit tests, collaboration tests, MVC/JPA slices, full application tests, or real infrastructure.
Outcome
Build a fast test portfolio that proves domain, web, persistence, configuration, and infrastructure behavior.
Trace authentication and authorization through the SecurityFilterChain before comparing sessions, JWT, CSRF, CORS, and OAuth 2.0/OIDC.
Outcome
Explain and test the complete security path for missing, invalid, forbidden, and permitted requests.
Call external services safely and add caching only after defining timeouts, retries, idempotency, consistency, and failure evidence.
Outcome
Design bounded failure behavior for remote calls and cached data.
Package, observe, test, and deploy one modular application before considering distributed-system complexity.
Outcome
Defend application boundaries and demonstrate readiness, graceful shutdown, rollback, and production evidence.
Optional after the core
Messaging, file handling, reactive performance, and microservices remain available, but they no longer interrupt the core interview and application path.
Move work off the request path while keeping delivery, ordering, retries, and business state observable.
Accept uploads without risking memory or security, validate what users send, and store files durably behind controlled access.
Measure real bottlenecks, tune the hottest paths, and scale Spring Boot services horizontally with evidence instead of folklore.
Split services only around owned capabilities, then design discovery, routing, resilience, communication, and tracing for partial failure.