Databases

Guides in this topic cover setup, troubleshooting, and decision-making. Each includes verification steps and last-reviewed dates.

Guides

Fix a database that is slow A database that responds slowly or times out. This guide helps you identify slow queries with EXPLAIN and the slow query log, add or fix indexes, and rule out disk or memory pressure—or escalate when needed.
Fix a database that will not connect A client cannot connect to MySQL or PostgreSQL. This guide helps you check the service is running, the port is listening, credentials and host, firewall rules, and netstat or ss for connectivity—or escalate when needed.