fix(postgres): lock TransactWriteItems items in key order, cancel on deadlock - #385

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yesyayen wants to merge 6 commits into

ExtendDB:mainfrom

yesyayen:fix/f7-twi-deadlock

Commits on Oct 5, 2026

fix(postgres): cancel deadlocked write transactions instead of failing them
yesyayen
committed
73686b8
fix(postgres): stop a write transaction once its validation answer is known
yesyayen
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e6edd27
test: cap the 5xx a contended transaction run may return
yesyayen
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1d47fd6
docs: describe write transaction contention and lock order
yesyayen
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f708177
test: pin that an invalid first op answers without waiting on later locks
yesyayen
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18447cb
style: backtick the SQLSTATE names in the conflict classifier doc
yesyayen
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0e242c5