In development, the OAI cache can introduce confusion. Perhaps the build step could clear the OAI cache by default on a new build. The time saved in troubleshooting may outweigh the performance gain from the cache.
If this idea is accepted, it might also be useful to do the same with the Cocoon cache.
See discussion from StackOverflow: http://stackoverflow.com/questions/31667055/patching-dspace-for-ds-2542-xoai-date-granularity-results-in-no-change-of-beha/31667782