spring-projects/spring-integration — pull request #1223 by garyrussell (2014-07-23 21:05:42+00:00)
Title: INT-2371 DefaultHeaderChannelRegistry Improvements

JIRA: https://jira.spring.io/browse/INT-3471

- Make final fields protected so they are available to subclasses
- Add property `removeOnGet` allowing the map entry to be removed immediately when it is used
- Add `time-to-live-expression` allowing override of the reaper delay