TLDR Tech / DevOps
What happens in the milliseconds after you tap pay
Databricks demonstrates a fraud detection app that scores credit card transactions in 27 milliseconds median latency by combining Model Serving route optimization with Lakebase Postgres for real-time feature lookups, achieving single-digit database query times even at the 75th percentile across 5,000 sequential requests. The open-source sample app (FastAPI backend, React frontend) shows how lakehouse architectures can now handle checkout-grade latency requirements that previously demanded separate infrastructure, with detailed benchmarks showing feature lookups taking just 7.8ms at median and model inference adding 18.1ms.
Read the full story