> On 15 Apr 2024, at 14:01, jian he <jian.universality@gmail.com> wrote:
>
> "is not a PostgreSQL server process" is the same thing as "not a
> PostgreSQL backend process”?
As far as I understand, backend is something attached to frontend.
There might be infrastructure processes like syslogger or stats collector, client can signal it too.
Best regards, Andrey Borodin.