Spring Boot Logging in 2026: Structured Logs for Production with Logback and JSON
Complete guide to Spring Boot structured logging. Logback JSON configuration, MDC for tracing, production best practices and ELK Stack integration.
Spring Boot
BACKEND
Reference Java framework for backend offering intelligent auto-configuration and complete ecosystem for REST APIs, microservices and reactive applications. Modular architecture with Spring Data JPA, Spring Security, and Spring Cloud for cloud-native apps.
What you'll learn
Intelligent auto-configuration and ready-to-use starters
Spring MVC & REST for modern APIs with validation
Spring Data JPA with Hibernate for persistence
Spring Security with JWT, OAuth2 and advanced authentication
Comprehensive testing (JUnit, Mockito, @SpringBootTest, slices)
Actuator for production monitoring and metrics
Reactive programming with WebFlux (Mono/Flux)
Microservices and Spring Cloud (Config, Discovery, Gateway)
Transactions, caching (Redis, Caffeine) and async/scheduling
Docker containerization and GraalVM native images
Key topics to master
The most important concepts to understand this technology and ace your interviews
1
Spring Core: IoC, Dependency Injection, beans and scopes
2
Auto-configuration, starters and configuration (properties/YAML)
3
Spring MVC, REST controllers (@GetMapping, @PostMapping, etc.)
4
Request/response handling (@PathVariable, @RequestBody)
5
Bean Validation and exception handling
6
Spring Data JPA: entities, relationships, repositories and queries
7
Spring Security: authentication, authorization, JWT, OAuth2
8
Transactions (@Transactional), propagation and isolation
9
Testing: unit tests (Mockito) and Spring Boot tests
10
Actuator, logging (SLF4J/Logback) and monitoring
11
Caching with @Cacheable, providers (Redis, EhCache)
12
Async (@Async), scheduling (@Scheduled) and events
13
WebFlux and reactive programming (Mono, Flux)
14
Microservices: Spring Cloud Config, Service Discovery, API Gateway
15
Performance, optimization, Docker and GraalVM native images
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Discover our latest articles and guides on Spring Boot
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Prepare for Spring GraphQL interviews with this complete guide. Resolvers, DataLoaders, N+1 problem handling, mutations, and best practices for technical questions.