The unbearable lightness of one more index

The blog post discusses the impact of excessive indexing on PostgreSQL database performance. It analyzes 30 AI-generated database schemas, finding that while many generated indexes improve read performance, they significantly increase write costs and WAL (Write-Ahead Logging) volume, particularly on write-heavy tables. The author emphasizes the need for careful index management and the importance of considering write traffic when creating indexes, illustrating findings with detailed metrics from synthetic benchmarks.