Re: is necessary to recheck cached data in fn_extra?

Pavel Stehule <pavel.stehule@gmail.com> writes:
> I should to use a cache accessed via fn_extra. There will be stored data
> about function parameters (types). If I understand correctly, these data
> should be stable in query, and then recheck is not necessary. Is it true?

I wouldn't trust that.  You don't really know what the lifespan of
a fn_extra cache is.

                        regards, tom lane