| MessageList | A container of messages which is used to store messages and then replay them later for a given subscription. | code | html |
| DestinationBasedMessageList | An implementation of MessageList which maintains a separate message list for each destination to reduce contention on the list and to speed up recovery times by only recovering the interested topics. | code | html |
| SimpleMessageList | A simple fixed size MessageList where there is a single, fixed size list that all messages are added to for simplicity. | code | html |