3 articles found
I switched from MongoDB to PostgreSQL after years of document queries, and it stuck. This is the practical walkthrough covering the pg library setup, connection pooling, parameterized queries, error handling, transactions, and the pool config I actually run in production.
Database indexes are one of the most powerful tools for optimizing query performance. Learn how B-tree indexes, hash indexes, composite indexes, and more work under the hood, and discover strategies for indexing in both PostgreSQL and MongoDB.
Your find() queries are holding you back. The aggregation pipeline can do grouping, joins, and reshaping in a single database call. Here's how to actually use it.