How do I clear a specific cache entry? I saved a cache entry using cache_set(). How can I clear this entry using Drush?
You can create a custom drush command to call the cache_clear_all function or just use:

drush ev "cache_clear_all('my_module', 'cache', TRUE);"


You can read more about cache_clear_all in A Beginner's Guide to Caching Data in Drupal 7