When I do this, it brings me straight back to Intersystems Cache documentation (which is where I started). To add, I have found things 'here and there' that actually work, but they are sparse and only pertain to 'simple' stuff, like this:
do ^%CD

do ^%FREECNT

do ^%D

do ^%T

Any thing related to classes and methods, that I find in the Cache documentation, simply won't work -  <Class does not exist>, <Method does not exist> and so on. I need a reference that contains 'useful' commands/classes, etc. that actually 'work'.

Totally understand. Thanks Sandeep

Ah.. no confusion. Yes, ‘acutely’ aware that Cache does not use hashing. Just wanted to make sure there wasn’t more to the story, in the Universe/ Cache ‘get data’ scheme (if you will), in terms of retrieval time. All good here. :)