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 implement RFC-compliant error responses using the ProblemDetail class and ErrorResponse interface, leveraging the built-in Problem Details (RFC 9457) support introduced in Spring Boot 3.x. Includes migration steps from custom error response formats.
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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.