Database: Migration

Smart companies choose a phased migration. They use to replicate data incrementally from the old house to the new one while people are still living in the old one.

For a high-traffic app, "turning it off" for 4 hours costs millions in revenue and causes massive customer anger. database migration

Imagine a startup, "FastFlow," that started with a simple, comfortable home: a single MySQL database on a modest server. As years passed, the family (users) grew, and they bought more furniture (data). Now, the house is bursting at the seams, the floor is sagging, and the plumbing (query performance) is failing. It’s time to move to a massive new mansion (cloud-native PostgreSQL on AWS). Smart companies choose a phased migration