Adolfo Delorenzo
2116059157
- Celery workers use NullPool to avoid "Future attached to a different loop" errors from stale pooled async connections across asyncio.run() calls. FastAPI keeps regular pool (single event loop, safe to reuse). - Skip pgvector similarity search when no conversation history exists (first message) — saves ~3s embedding + query overhead. - Wrap pgvector retrieval in try/except to prevent DB errors from blocking the LLM response. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>