Give each request and worker its own database session#1149

Merged

new-usemame merged 8 commits into

mainfrom

fix/1121-session-thread-local

Jul 26, 2026

Commits on Jul 26, 2026

Resolve calibre_db.session per thread instead of a shared attribute
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Tolerate instances and patches that predate the session property
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Reproduce the #1048 mid-fetch crash the shared session causes
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Record the session-per-thread fix in the changelogs
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Pin the contracts the session attribute had before it became a property
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Scope the calibre session per greenlet instead of per OS thread
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Record the greenlet-scoped session fix in the changelogs
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Assert autoflush on a real session, not on setup_db's source text
new-usemame
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