We were burning $42,000 a month on managed PostgreSQL 17 instances to power our analytics dashboards, with p99 query latency hitting 11 seconds for 1TB+ joins. Adding DuckDB 1.2 as an embedded OLAP engine cut that bill by 40% (saving $16,800/month) and dropped p99 latency to 210ms, with zero changes to our application layer. Here’s how we did it,...