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Nifi store common passwords in Distributed map cache?

Explorer

Having trouble understanding how to use this. I want to store aws keys or other pwds in one place so i don't have to repeat them in various flows. Is dist map cache the place to do that?

My idea is I would have a dataflow that always checks some file that contains the credentials. And if they ever change, it does the push to dist map cache, and is always on, checking every few mins or something? does that make sense?

Thanks,

Ron