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Added a note about undefined behavior of get_backend_pid when connecting to PgBouncer.

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This commit is contained in:
Alexander Artemenko 2019-08-23 08:47:50 +03:00
parent 4d10f1235f
commit 8b4d3ac965
1 changed files with 6 additions and 2 deletions
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doc/src/connection.rst
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@ -117,8 +117,6 @@ The ``connection`` class
with a `~connection.commit()`/`~connection.rollback()` before
closing.
.. _PgBouncer: http://pgbouncer.projects.postgresql.org/
.. index::
single: Exceptions; In the connection class
@ -828,6 +826,9 @@ The ``connection`` class
Note that the PID belongs to a process executing on the database
server host, not the local host!
.. warning:: Behaviour of the ``get_backend_pid`` is undefined when
connecting to some sort of proxy, like PgBouncer_.
.. seealso:: libpq docs for `PQbackendPID()`__ for details.
.. __: https://www.postgresql.org/docs/current/static/libpq-status.html#LIBPQ-PQBACKENDPID
@ -889,3 +890,6 @@ The ``connection`` class
:hide:
conn.rollback()
.. _PgBouncer: http://pgbouncer.projects.postgresql.org/