Sub-millisecond analytical APIs: Async ClickHouse for FastAPI. Day 10 of the WClickHouse Open-Source Engineering Series. Don't let analytical database queries block your web server. WClickHouse async client delivers non-blocking, sub-millisecond concurrency for modern Python APIs. The Pain Points We Faced Synchronous ClickHouse queries blocking the main asyncio thread in FastAPI API latency degrading when handling multiple concurrent dashboard requests Worker thr...