SQL Performance Tuning for High-Scale Apps
SQL Performance Tuning for High-Scale Apps High-scale applications face a constant trade-off: feature speed versus database latency. Good SQL performance comes from clear queries, steady measurement, and targeted tuning. This guide offers practical steps you can apply today and wins you can verify quickly. Start with data and plans. Track latency, throughput, and the share of slow queries. Look for patterns like scans on large tables, missing indexes, or functions on filtered columns. Use the execution plan to see where the time goes. Run EXPLAIN (ANALYZE, BUFFERS) on representative queries to learn the real costs. ...