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Sep 18, 20266 min read
MySQL Composite Index Optimization Guide
Learn MySQL composite index optimization: leftmost-prefix rules, correct column ordering, covering indexes, and verifying gains with EXPLAIN plans.
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Sep 16, 20265 min read
PostgreSQL Indexing: A Practical Guide
A practical guide to PostgreSQL indexing — when to add one, which index type fits your query, and how to actually spot a slow query needing one.
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