Drupal's default caching mechanism is to clear "all" cache. This is rather inefficiënt. There are options to clear specific caches only, here's how.
bash-5.0$ drush cc
Choose a cache to clear:
[0] Cancel
[1] drush
[2] theme-registry
[3] router
[4] css-js
[5] render
[6] plugin
[7] bin
[8] views
[9] token
> 6
[success] 'plugin' cache was cleared.