Spring Boot 3 Articles
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How to Standardize Error Responses with Problem Details (RFC 9457) in Spring Boot 3.x
Learn how to unify error responses with Problem Details (RFC 9457), natively supported in Spring Boot 3.x. This guide covers the spring.mvc.problemdetails.enabled setting, how to use the ProblemDetail class and ErrorResponse, integration with @ControllerAdvice and ResponseEntityExceptionHandler, migration steps from Spring Boot 2.x, and application to Spring Security and validation errors, all with code examples.
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Spring Boot 2.x to 3.x Migration Guide - Java 17 Required with Checklist
Explains the 2.x→3.x migration steps with practical code examples in response to Spring Boot 2.7 end-of-life (EOL) and the Java 17 requirement. Organizes javax→jakarta replacement, SecurityFilterChain migration, and spring.factories deprecation handling with a checklist, providing the shortest route to understanding the causes and solutions for compilation/startup errors.
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How to Implement Circuit Breaker with Resilience4j in Spring Boot - Spring Boot 3.x Guide
Learn how to implement circuit breakers in Spring Boot 3.x using Resilience4j, the successor to Hystrix. This guide covers how to use @CircuitBreaker, @Retry, @RateLimiter, Bulkhead, and TimeLimiter, fallback design, parameter tuning in application.yml, and state monitoring with Actuator, all with practical code examples.
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Spring Boot Virtual Threads (Java 21): Setup, Performance, and Pitfalls
Enable virtual threads in Spring Boot 3.2+ with one setting. Covers performance benchmarks vs platform threads, ThreadLocal behavior changes, pinning issues, and @Async integration.