Performance Tuning Archives - The Data Transformation Company

btree_gist improvements in PostgreSQL 18

The btree_gist improvements in PostgreSQL 18 are one of the most practical performance wins shipping in this release for teams that depend on exclusion constraints, composite indexes, and nearest-neighbour search. The btree_gist extension lives in [...]

Should I Rebuild My PostgreSQL Index? When and How to REINDEX

Few maintenance questions generate as much confusion in the PostgreSQL community as this one: should I rebuild my PostgreSQL index, and if so, how often? Database administrators arriving from other systems frequently ask, "How can [...]

Key management in PostgreSQL encryption and TDE key handling

MySQL Slow Query Log Table: A Practical Guide to Identifying and Fixing Performance Bottlenecks

The MySQL slow query log table is one of the most practical tools available to database administrators who need to identify and fix performance bottlenecks—yet it remains widely misunderstood. Every DBA eventually faces the same [...]

Snowflake Performance Tuning: 5 Powerful Strategies for Clustering, Caching, and Query Profiling

Learn the most powerful Snowflake performance tuning strategies including clustering key optimization, multi-layer caching, and systematic query profiling. This expert guide covers everything you need to optimize your Snowflake data warehouse for maximum speed and cost efficiency.

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Top 10 SQL Server Performance Tuning Techniques Every DBA Should Know in 2026

Ten high-leverage SQL Server performance tuning techniques every DBA should master in 2026 — from Query Store and index design to Intelligent Query Processing and wait-statistics analysis, each with runnable T-SQL. By MinervaDB Inc.

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MongoDB Sparse, Partial, and TTL Indexes

MongoDB Sparse, Partial, and TTL Indexes: Mechanics, Pitfalls, and Production Design Patterns A SaaS platform stored user records with an optional premiumSince date field. Only premium users — 2% of the collection — had this field set. […]