improved session management #53
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Pull Request Overview
This PR improves session management by implementing session validation and reuse strategies to optimize database connection handling. The changes focus on preventing unnecessary session closures and adding validation to ensure sessions remain healthy before reuse.
- Adds session validation logic to check connection health before reusing cached sessions
- Modifies session lifecycle to prevent premature closure and enable session reuse
- Introduces explicit session cleanup method for controlled shutdown scenarios
dynamicannotationdb/database.py
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| if not hasattr(session, 'bind') or session.bind is None: | ||
| return False | ||
| # Try a simple query to test the connection | ||
| session.execute("SELECT 1") |
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The session validation query should use session.execute(text("SELECT 1")) to properly handle the SQL string. SQLAlchemy 2.0+ requires explicit text() wrapper for raw SQL strings.
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
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