Leeri Lee enhanced the developer experience for retry topics in the spring-projects/spring-kafka repository by improving documentation and clarifying implementation guidance. Focusing on the adoc language and leveraging strong documentation skills, Leeri detailed the default non-blocking retry setup and recommended using @RetryableTopic directly on @KafkaListener methods for simpler configurations. The work also included refining instructions for enabling retry infrastructure with @EnableKafkaRetryTopic and extending RetryTopicConfigurationSupport for advanced use cases. These updates streamlined the setup process, reduced the risk of misconfiguration, and provided a clearer path for teams to implement scalable retry strategies in Spring Kafka environments.