RudderStack proved PostgreSQL can sustain 100,000 events per second as a streaming queue, sidestepping Kafka. They tamed table bloat, rewrote indexing, and managed retry storms, turning a simple relational DB into a high‑throughput, resilient backbone. The playbook shows teams can leverage existing SQL skills to cut ops complexity while scaling massive event pipelines.
ClickHouse Cloud now runs compute without any local disks, using a new in‑memory engine backed by a Shared Catalog that centralizes metadata. This eliminates warm‑up, enables instant elastic scaling, and adds atomic DDL features like cross‑db renames and UNDROP, boosting reliability and speed for cloud workloads.