But it shouldn't go back to the database to check if it's changed, if it's
truly cached.  What would be the point of caching, if it had to check
anyway?

>> 

 

It takes milliseconds for CF to "check" as opposed to many many seconds to
retrieve database records that you would normally cache and not HIT the
server every time when you know as a developer the result will not often
change. My postcode example in point, say 10,000+ records?

 

That is when you use caching.

 

 

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