rayhpeng 4810898cfa chore(persistence): drop redundant busy_timeout PRAGMA ...

Python's sqlite3 driver defaults to a 5-second busy timeout via the
``timeout`` kwarg of ``sqlite3.connect``, and aiosqlite + SQLAlchemy's
aiosqlite dialect inherit that default. Setting ``PRAGMA busy_timeout=5000``
explicitly was a no-op — verified by reading back the PRAGMA on a fresh
connection (it already reports 5000ms without our PRAGMA).

Concurrent stress test (50 checkpoint writes + 20 event batches + 50
thread_meta updates on the same deerflow.db) still completes with zero
errors and 200/200 rows after removing the explicit PRAGMA.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-04-11 23:38:53 +08:00

..

harness

chore(persistence): drop redundant busy_timeout PRAGMA

2026-04-11 23:38:53 +08:00