PYTHON-5898 Reduce pool checkout lock overhead and stop mutating TopologyDescription during selection - #16

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PYTHON-5898-final

Commits on Jul 30, 2026

PYTHON-5898 Make TopologyDescription.apply_selector() non-mutating
blink1073
committed
c02817f
PYTHON-5898 Merge pool checkout lock acquisitions on the fast path
blink1073
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d0e2957
PYTHON-5898 Add regression test for operation_count leak on checkout failure
blink1073
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e79d6a7
PYTHON-5898 Fix duplicate ConnectionCheckOutFailed event in _get_conn
blink1073
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adac148
PYTHON-5898 Correct stale-lock wording and add get_primary regression test
blink1073
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930219f
PYTHON-5898 Remove the candidate_servers property
blink1073
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0bf12ae
PYTHON-5898 Drop a test that could not fail and fix stale wording
blink1073
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6aff28f
PYTHON-5898 Note the candidate_servers removal in the changelog
blink1073
committed
0ea114f

Commits on Jul 31, 2026

Commits on Aug 3, 2026

Commits on Aug 21, 2026

Commits on Sep 3, 2026