Stop database outages before they happen: A monitoring and migration guide Database emergencies always happen at the worst possible time. You're dealing with angry users, stressed stakeholders, and the pressure to fix everything immediately. The solution? Catch the warning signs early and migrate on your terms, not during a crisis. This guide covers the specific metrics that predict database problems and how to execute a seamless migration when it's time to upgrade your infrastructure. What you need to get started Database monitoring capabilities (built-in tools work fine) Admin access to your database servers Understanding of your app's typical database behavior Ability to run queries and check system metrics We'll focus on MySQL and PostgreSQL, but these principles work for most relational databases. The metrics that actually matter Database issues develop slowly, then hit you all at once. Here's what to watch: Connection pool exhaustion This kills applications faster than any slow query.…