Node.js, Express & PostgreSQL Database Scaling Services

I use PostgreSQL's pg_stat_statements extension and EXPLAIN (ANALYZE, BUFFERS) to pinpoint sequential scans, inefficient joins, and missing indexes causing high IOPS and CPU utilization.

PostgreSQL forks a process for each connection, which consumes significant memory. When using serverless backends or high concurrency, connection pooling tools like pgBouncer allow thousands of requests to share a small pool of database connections without crashing.

Yes. I execute zero-downtime migrations using techniques like CREATE INDEX CONCURRENTLY, dual-write schema transitions, and backward-compatible column rollouts.