Becasue then you dont need to think about implications and cost of database access, you can write code that fetches same  data  multiple times and  it might still perform quite fine. if you do the same over odbc or jdbc you will get blamed.  

So was finally trying to do something and asked those iris dialect files from Intersystems support to see if those would work with cache. But apparently you cant get  even those  from wrc.

Thank you Asif,

You answered for Iris.

But  I was asking for Cache, I supect that our clients would not be wery pleased  if  I tell them to repurchase a database license  for a java 11 upgrade.  

Thanks anyway,

Mikko