Two syllables, or one?
All my life, the word “cache” (meaning either specifically temporary storage for computer-y info like your browser history, or a general stash/storage meaning like squirrels hiding acorns) has been pronounced like the word “cash” (meaning dollah-dollah-bill yo) but now I’m working around people who all pronounce it “cah-SHEH” instead.
Who’s the idiot – me, or them? C’mon … fighting ignorance and all that!
You are correct. They are confusing it with cachet.
Cachet is a whole other word.
If you mean something that holds or accumulates something (a browser cache, a gang’s cache of guns), it’s “cash.” That’s the only legitimate pronunciation of the word I know of.
If you mean the attractiveness or allure or glamor of something, the word is “cachet” and it’s pronounced “cash-ay.” Sounds like your crowd got the two terms and pronunciations garbled.
ETA: Double ninja’d! O no mister kill bill!
If you can get them to Google this, they’ll find plenty of references that explain the correct pronunciation.
I have used ‘cash’ but I believe the military used the word cash’e instead for the same thing.
Am I the only one who says it with a long A sound? “Caysh”? I mean it technically has a magic e which should make the preceding vowel long, right?
Pronounced like ‘cash’. Though I’ve heard others pronounce it differently.
Of course. Just like “have” and “give” and “love”. 
I do this, at least in my head. If I say it out loud I have to remind myself that this is one of those words that is pronounced differently than I think it should be. Like “desultory.”
Caysh is the correct pronunciation.
For whom, and where, and in what era, and in what cite?
In IT in Australia it is kaysh.
cache
noun 1. /kæʃ/ (say kash) a store of provisions, treasure, etc., especially one hidden in the ground.
2. /kæʃ/ (say kash) a store of food collected by some animals for the winter.
3. /kæʃ/ (say kash) a hiding place, especially one in the ground, for such provisions, treasure, etc.
4. /keɪʃ/ (say kaysh) → cache memory.
–verb (t) (cached, caching) 5. /kæʃ/ (say kash) to put in a cache; conceal; hide.
6. /keɪʃ/ (say kaysh) Computers to put into cache memory: this information is cached to increase speed.
[French, from cacher hide]
Appalachia. Cite? Deliverance.
As a geocacher I’ve heard a lot of people say the word “cache”, and I’ve only ever known one person who pronounces it as kaysh. That person is Australian.
My boss says “catch”. But then, he’s a lawyer.
This midwesterner pronounces it “cash,” but “cashay” is also recognized here.
That or they’re thinking of forte.
Are you working around military personnel or government contractors? For some reason, nobody in the Army can be bothered to look in a dictionary. 99% will pronounce it as “Cash-ay”.
It is pronounced like the word ‘cash’. Your associates are incorrect.