Eh, it's not industry-dependent so much as industries have specific reductions. A cache is long-term storage. The weapons industry would expect it to be filled with weapons, and maybe some body armor. A scouting party would expect tools for equipment repair, rations, and maybe some minor comfort gear. A computer scientist would expect it to be full of bytes.
http://en.wikipedia.org/wiki/Cache
http://www.etymonline.com/index.php?term=cache&allowed_in_fr...