adoprog/Sitecore-Courier — pull request #5 by Zvirja (2014-09-23 11:52:50+00:00)
Title: Fixed issue when Courier memory usage could be high without the need.

Note, Courier could consume a ton of memory even after the fix. That will happen if you have a large DIFF package, so all DIFF information is present in memory. That is because of CMS API internal implementation.