Rebuild the PHP app without stopping the business.
Five steps in which the old app keeps running until the new one starts. It is a checklist, not a promise of a deadline.
The checklist
- List the screens and the addressesWrite down which screens the app has, what each one does and its address. Ask the people who use it every day what must not disappear.
- Build the new app beside the old oneThe old app stays on and works as before. The new one is built on a separate address, where you try it without touching the working data.
- Move the tables as they areCopy the database tables without changing their structure. Then compare the number of rows in each table, in the old app and in the new one.
- Add 301s for the old addressesEach old address sends to its new screen. Try every address on the list before launch.
- Switch the domain and keep the old app readySwitch the domain to the new app once it has passed the tests. Keep the old app running until people have worked in the new one without errors, so you can switch back.
We rebuild old PHP apps: PHP to Next.js
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