Git-Yang edited a comment on issue #3449: URL: https://github.com/apache/rocketmq/issues/3449#issuecomment-958647224
可以通过配置同时支持同步和异步两种方式。 异步投递的两个主要缺点是无法保证消息顺序和失败处理，为了避免投递失败消息丢失，可以对失败消息进行重试，重试n次失败后，阻塞停止当前level对应的线程继续投递。此时投递的offset为失败消息的offset，避免了消息丢失。但是如果服务重启可能会导致数据重复，这里通过阻塞当前level继续投递降低消息重复率。 -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
