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Cost of connection.close and subsequent reopen documented

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Klaas van Schelven
2024-07-08 09:53:15 +02:00
parent 5120475683
commit c2ec150f52
2 changed files with 78 additions and 0 deletions
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snappea/foreman.py
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@@ -150,6 +150,8 @@ class Foreman:
# those constructs stands out. And outside of such decorators you're in autocommit because that's what Django
# does.
#
# Connection close (and subsequent reopen) has a cost that's documented in DESIGN-connections.md.
#
# Calling connection.close unnecessarily does not incur extra cost, because of `if self.connection is not None`
# in django.db.backends.base.base.DatabaseWrapper. (this is also the reason repeated calls to connection.close()
# are not a problem). (`connection` below is actually a ConnectionProxy, but it delegates to a DatabaseWrapper).