How to Test Database Migrations Without Losing Data
from Software Testing with Fexingo: QA, Automation, and Reliable Software Engineering Hosted by Fexingo
Database migrations are one of the riskiest operations in software delivery. A single misapplied ALTER TABLE can drop columns, corrupt data, or take down production. In this episode, Lucas and Luna dive into practical strategies for testing database migrations safely — before they hit production. They cover using staging environments with production-like data volumes, the role of automated rollback scripts, and why you should test migrations against a copy of your actual schema. The hosts discuss a real incident where a missing index caused a 45-minute downtime during a migration, and how a simple 'migration dry run' in CI could have caught it. They also explore tools like flyway and liquibase for version-controlled migrations, and the concept of 'expand-migrate-contract' pattern for zero-downtime schema changes. Whether you're a QA engineer or a developer writing migrations, this episode gives you actionable steps to prevent data loss and keep deployments smooth. #DatabaseMigrations #DataIntegrity #SoftwareTesting #QA #CI #DevOps #SchemaChanges #RollbackScripts #Flyway #Liquibase #ZeroDowntimeDeployment #StagingEnvironment #DataLossPrevention #TestingStrategies #Technology #FexingoBusiness #BusinessPodcast #SoftwareEngineering Keep every episode free: buymeacoffee.com/fexingo
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