docs/
└── tutorials/
└── spring-boot/
├── index.mdx
├── 01-introduction/
│ ├── what-is-spring-boot.mdx
│ ├── spring-framework-vs-spring-boot.mdx
│ ├── spring-boot-features.mdx
│ ├── spring-boot-architecture.mdx
│ ├── spring-boot-use-cases.mdx
│ └── spring-boot-versions-and-support.mdx
├── 02-java-and-prerequisites/
│ ├── java-fundamentals-for-spring.mdx
│ ├── object-oriented-programming.mdx
│ ├── interfaces-and-inheritance.mdx
│ ├── collections-and-generics.mdx
│ ├── exceptions-and-logging.mdx
│ ├── lambdas-and-streams.mdx
│ └── annotations-and-reflection.mdx
├── 03-environment-setup/
│ ├── install-java-and-jdk.mdx
│ ├── verify-java-installation.mdx
│ ├── install-maven.mdx
│ ├── gradle-fundamentals.mdx
│ ├── configure-intellij-idea.mdx
│ ├── configure-vscode-or-eclipse.mdx
│ ├── spring-initializr.mdx
│ └── create-your-first-project.mdx
├── 04-project-structure/
│ ├── project-directory-layout.mdx
│ ├── pom-xml-explained.mdx
│ ├── gradle-build-files.mdx
│ ├── main-application-class.mdx
│ ├── application-properties.mdx
│ ├── application-yaml.mdx
│ └── run-and-package-application.mdx
├── 05-core-spring-concepts/
│ ├── inversion-of-control.mdx
│ ├── dependency-injection.mdx
│ ├── spring-beans.mdx
│ ├── application-context.mdx
│ ├── component-scanning.mdx
│ ├── component-service-repository.mdx
│ ├── constructor-injection.mdx
│ └── bean-lifecycle-and-scopes.mdx
├── 06-configuration-and-profiles/
│ ├── externalized-configuration.mdx
│ ├── properties-vs-yaml.mdx
│ ├── configuration-properties.mdx
│ ├── environment-variables.mdx
│ ├── profiles-and-profile-groups.mdx
│ ├── conditional-beans.mdx
│ ├── custom-auto-configuration.mdx
│ └── configuration-validation.mdx
├── 07-rest-api-development/
│ ├── http-and-rest-fundamentals.mdx
│ ├── spring-web-and-mvc.mdx
│ ├── create-rest-controller.mdx
│ ├── request-mapping.mdx
│ ├── path-variables-and-query-parameters.mdx
│ ├── request-bodies-and-response-bodies.mdx
│ ├── response-entities-and-status-codes.mdx
│ ├── dto-design-and-mapping.mdx
│ ├── pagination-sorting-and-filtering.mdx
│ ├── global-exception-handling.mdx
│ ├── api-versioning.mdx
│ └── openapi-and-swagger.mdx
├── 08-validation-and-data-transfer/
│ ├── bean-validation-fundamentals.mdx
│ ├── jakarta-validation-annotations.mdx
│ ├── validate-request-bodies.mdx
│ ├── custom-validation-constraints.mdx
│ ├── validation-error-responses.mdx
│ ├── dto-vs-entity.mdx
│ └── serialization-and-deserialization.mdx
├── 09-database-and-persistence/
│ ├── database-fundamentals.mdx
│ ├── configure-postgresql.mdx
│ ├── configure-mysql.mdx
│ ├── jdbc-and-datasources.mdx
│ ├── spring-data-jpa.mdx
│ ├── entity-mapping.mdx
│ ├── primary-keys-and-relationships.mdx
│ ├── repositories-and-query-methods.mdx
│ ├── jpql-and-native-queries.mdx
│ ├── transactions-and-rollback.mdx
│ ├── lazy-and-eager-loading.mdx
│ ├── n-plus-one-query-problem.mdx
│ ├── database-migrations-with-flyway.mdx
│ └── database-migrations-with-liquibase.mdx
├── 10-spring-security/
│ ├── security-fundamentals.mdx
│ ├── security-filter-chain.mdx
│ ├── authentication-and-authorization.mdx
│ ├── password-encoding.mdx
│ ├── database-backed-authentication.mdx
│ ├── role-based-access-control.mdx
│ ├── method-level-security.mdx
│ ├── jwt-authentication.mdx
│ ├── oauth2-and-openid-connect.mdx
│ ├── cors-and-csrf.mdx
│ ├── secure-password-reset.mdx
│ └── security-testing.mdx
├── 11-testing-and-quality/
│ ├── testing-strategy.mdx
│ ├── junit-5-fundamentals.mdx
│ ├── unit-testing-with-mockito.mdx
│ ├── spring-boot-test.mdx
│ ├── web-layer-testing.mdx
│ ├── repository-testing.mdx
│ ├── integration-testing.mdx
│ ├── testcontainers.mdx
│ ├── mockmvc-and-rest-assured.mdx
│ ├── test-profiles-and-fixtures.mdx
│ ├── code-coverage-and-quality.mdx
│ └── ci-testing-workflow.mdx
├── 12-error-handling-and-logging/
│ ├── exception-handling-strategies.mdx
│ ├── controller-advice.mdx
│ ├── structured-error-responses.mdx
│ ├── slf4j-and-logback.mdx
│ ├── structured-logging.mdx
│ ├── correlation-ids.mdx
│ ├── log-levels-and-configuration.mdx
│ └── sensitive-data-in-logs.mdx
├── 13-caching-and-performance/
│ ├── caching-fundamentals.mdx
│ ├── spring-cache-abstraction.mdx
│ ├── caffeine-cache.mdx
│ ├── redis-cache.mdx
│ ├── cache-invalidation.mdx
│ ├── database-query-optimization.mdx
│ ├── connection-pooling.mdx
│ └── performance-profiling.mdx
├── 14-asynchronous-and-messaging/
│ ├── asynchronous-methods.mdx
│ ├── scheduling-tasks.mdx
│ ├── async-executors-and-context.mdx
│ ├── spring-events.mdx
│ ├── messaging-fundamentals.mdx
│ ├── rabbitmq-integration.mdx
│ ├── kafka-integration.mdx
│ ├── retries-and-dead-letter-queues.mdx
│ └── idempotency-and-message-delivery.mdx
├── 15-external-api-integration/
│ ├── restclient-and-resttemplate.mdx
│ ├── webclient-and-reactive-http.mdx
│ ├── declarative-http-clients.mdx
│ ├── timeouts-and-retries.mdx
│ ├── resilience-patterns.mdx
│ ├── circuit-breakers-with-resilience4j.mdx
│ └── api-client-testing.mdx
├── 16-file-storage-and-uploads/
│ ├── multipart-file-upload.mdx
│ ├── file-validation-and-limits.mdx
│ ├── local-file-storage.mdx
│ ├── object-storage-integration.mdx
│ ├── file-download-endpoints.mdx
│ └── secure-file-handling.mdx
├── 17-observability-and-actuator/
│ ├── spring-boot-actuator.mdx
│ ├── health-and-readiness-probes.mdx
│ ├── metrics-with-micrometer.mdx
│ ├── prometheus-and-grafana.mdx
│ ├── distributed-tracing.mdx
│ ├── opentelemetry-integration.mdx
│ └── production-monitoring.mdx
├── 18-microservices/
│ ├── microservices-fundamentals.mdx
│ ├── service-boundaries-and-domain-design.mdx
│ ├── service-to-service-communication.mdx
│ ├── service-discovery.mdx
│ ├── api-gateway-pattern.mdx
│ ├── centralized-configuration.mdx
│ ├── distributed-transactions-and-saga.mdx
│ ├── event-driven-architecture.mdx
│ └── microservices-observability.mdx
├── 19-reactive-spring/
│ ├── imperative-vs-reactive-programming.mdx
│ ├── project-reactor-fundamentals.mdx
│ ├── mono-and-flux.mdx
│ ├── spring-webflux.mdx
│ ├── reactive-data-access.mdx
│ ├── backpressure-and-error-handling.mdx
│ └── when-to-use-webflux.mdx
├── 20-docker-and-deployment/
│ ├── production-builds.mdx
│ ├── executable-jars.mdx
│ ├── dockerize-spring-boot.mdx
│ ├── docker-compose-and-databases.mdx
│ ├── container-health-checks.mdx
│ ├── ci-cd-with-github-actions.mdx
│ ├── deploy-to-cloud-platforms.mdx
│ ├── reverse-proxy-and-tls.mdx
│ ├── environment-secrets.mdx
│ └── production-deployment-checklist.mdx
├── 21-advanced-spring-boot/
│ ├── custom-starters.mdx
│ ├── auto-configuration-development.mdx
│ ├── application-events-and-listeners.mdx
│ ├── custom-annotations.mdx
│ ├── modular-monoliths.mdx
│ ├── native-images-and-aot.mdx
│ ├── virtual-threads.mdx
│ └── framework-migration-and-upgrades.mdx
├── 22-projects/
│ ├── hello-world-rest-api.mdx
│ ├── task-management-api.mdx
│ ├── library-management-system.mdx
│ ├── expense-tracker-api.mdx
│ ├── jwt-authentication-service.mdx
│ ├── ecommerce-backend.mdx
│ ├── notification-service.mdx
│ ├── microservices-order-platform.mdx
│ └── production-capstone.mdx
├── reference/
│ ├── spring-boot-annotations-cheatsheet.mdx
│ ├── application-properties-reference.mdx
│ ├── maven-commands.mdx
│ ├── http-status-codes.mdx
│ ├── common-errors-and-solutions.mdx
│ ├── glossary.mdx
│ ├── version-compatibility.mdx
│ └── official-resources.mdx
└── assets/
├── images/
├── diagrams/
└── examples/