How Partitioning Cut a 43‑Second PostgreSQL Query to 0.3 seconds
In a SaaS analytics platform with a 45‑billion‑row, 1.2 TB events table, the author shows how moving to native PostgreSQL range partitioning by event_time, combined with zero‑downtime migration steps, reduced the typical P99 query latency from 43 seconds to about 0.3 seconds while enabling easier data lifecycle management.
