Problem/Motivation Since the basic implementation of cache tags has a runtime overhead based on the number of unique cache tags requested, in some cases it might be better to skip adding those cache tags all together, and go back to a full cache clear for them. Some cache tags which will be requested on (nearly) every page, might hardly ever be cleared except by a full cache clear. For example block configuration, image styles etc. There are also explicit clears of cache bins that should also be reviewed. Proposed resolution Review cache tag implementation.