Thank you 1nickt
for raising my attention to the difference between DB connections and DB handles. That is a very good point.
I readily admit that:I don't understand the exact nature of how Perl uses a DBH and how Postgres sees it
using a separate DB connection instead for each child feels intuitively right
my understanding and use of the terms 'thread' and 'process' are not fully mature and somewhat imprecise
I have never used SQL::Abstract but upon having a cursory glance after your example it looks like a good option that may save me some code
I've also never used MCE - this is not as easy to understand and I'll have to look into it
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