Paweł Urbanek • 12/20/2022

How to Monitor and Fix PostgreSQL Database Locks in Rails

This article provides a practical guide for Ruby on Rails developers on how to monitor and fix PostgreSQL database locks. It explains the basics of PostgreSQL locks and MVCC, demonstrates how to simulate locks using Rails console, and shows how to detect locks using the rails-pg-extras gem. The article covers common lock types like RowExclusiveLock, how concurrent updates cause blocking, and offers best practices to prevent deadlocks and performance issues in Rails applications as they scale.

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#performance #postgresql #Rail