This repository is a complement to the blog post Migrating database with pt-archiver.

This is a series of post that will help you to use pt-archiver in various ways thinking outside the box. In a way that you don't need to have downtime to migrate your database. We will cover various topics like:

• Upgrading database version seamlessly
• Normalize and denormalize tables
• Clean up old data in large databases
• Alter tables without downtime
• Migrate between different database engines