Relational Database Tuning: B-Tree Indexes, EXPLAIN ANALYZE, and Slow Query Remediation
When database-driven web portals experience sluggish responses as datasets scale, unindexed queries triggering full sequential table scans are almost always to blame.
1. Profiling with EXPLAIN ANALYZE
Inspect query execution plans to identify bottleneck nodes, missing index scans, and unoptimized join operations.
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