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Add locking module: optimistic vs pessimistic locking on Hibernate 7.4.14.Final

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Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01YPgGH6aMbSLANL3E2HHmS6
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asmhatre
2026-10-25 17:01:49 +00:00
co-authored by Claude Sonnet 5.5
parent 807f681ed1
commit 357ba84e5c
18 changed files with 758 additions and 0 deletions
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locking/output/01-lost-update.txt
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start balance 100; transaction A deposits 10, transaction B deposits 20
both read 100 before either writes; A commits first, then B
final balance: 120 (a correct result would be 130)
update statements Hibernate sent:
update Account set balance=?,owner=? where id=?
update Account set balance=?,owner=? where id=?