In microservices architecture, error handling is complex but essential to create resilient applications that can gracefully respond to unexpected issues. Spring Boot provides powerful tools to implement robust error-handling mechanisms, allowing each service to manage errors locally while ensuring a cohesive response to clients. This article will deeply focus on best practices for designing an effective error-handling strategy in Spring Boot microservices. We’ll explore the structured use of custom exceptions, global exception handling with @ControllerAdvice, and the use of Resilience4j for implementing retries, timeouts, and circuit breakers in a Spring Boot microservices context.