Despite the best planning, migrations are "10x more difficult than people think".
Moving from Oracle or MySQL to PostgreSQL isn't just a file transfer; it’s translating languages. Automated tools are essential, often reducing project time by 50%. database migration
The application is updated to write data to both the old and new databases simultaneously. This keeps the new system "warm" and up-to-date. Despite the best planning, migrations are "10x more
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. The application is updated to write data to
A dedicated "tiger team" tests every byte to ensure data integrity. Chapter 3: The Darkest Hour (When Things Go Wrong)
This is a full story about —a high-stakes, technical, and often terrifying saga that every growing tech company eventually faces.
You must map every dependency—every table, view, and stored procedure.