| Name | Description | Type | Package | Framework |
| MessageGroupStore .MessageGroupCallback | Invoked when a MessageGroupStore expires a group. | Interface | org.springframework.integration.store.MessageGroupStore | Spring Integration |
| MessageGroupStoreReaper | Convenient configurable component to allow explicit timed expiry of MessageGroup instances in aMessageGroupStore. | Class | org.springframework.integration.store | Spring Integration |
| MessageGroupStore | Defines additional storage operations on groups of messages linked by a group id. | Interface | org.springframework.integration.store | Spring Integration |