Delivering Messages to Subscribers
Last updated: 2020-02-26 21:08:20PDF
The model of topic's (Topic) message to subscriber shipping is as follows:
When Topic sends messages to subscriber shipping, he follows the following principles:
- Topic will do its best to send producer publish's message, shipping (notification) to subscribers.
- When shipping fails many times after retrying, the message will be heap in Topic, waiting for the next shipping. If it continues to fail, the message will be discarded after the maximum life cycle of the message (1 day) ends.
When Topic fails to send a message to subscriber shipping, the possible reasons are as follows: