FOR THOSE DESIROUS of pretending to some semblance of literacy:
cache rhymes with stash and means a… well… stash.
cachet rhymes with sashay and means… well… something cool, or the sign of coolth.
OK? Savvy the diff? When you say “cashay” meaning a stash, you sound like a parvenu rube. When you write “cache,” meaning “cachet,” you… well, sound like a parvenu rube.