The phonetics I found online are kæɪʃ
Are there any other english-speaking languages that pronounce it the other way?
Might you cite your source?
Here are my sources:
They all point to /kæʃ/.
Seems even the native Aussies don’t agree: https://youglish.com/search/caching/aus
Cahce get it
Macquarie Dictionary lists /kæʃ/ for the first 5 usages of ‘cache’. However, it lists also a sixth, technical usage as follows:
6. /keɪʃ/ (say kaysh) Computers to put into cache memory: this information is cached to increase speed.
Ryan K., is indeed, correct. In a specifically Australian and technical context.