Leaving an AI builder

Required

• Give each table one writer during the move

  TKO-16

  While two systems run side by side, let only one of them write each table. The other reads it or gets copies through events.

Recommended

• Put a router in front and move one route at a time

  TKO-15

  Put a proxy in front of the builder app that sends each route to the old or the new system. Move one route at a time, and keep each move reversible by one setting.

• Compare old and new answers before switching a route

  TKO-17

  Before a route switches to the new system, send copies of its read requests to both systems and compare the answers. Switch only when no difference is left unexplained.

• Move users without resetting their passwords

  TKO-18

  Export the users with their IDs and password hashes, and check each old hash at the user's next sign-in. Store a new hash then, and keep the same user ID.

• Switch off the builder app on a set date

  TKO-19

  When the last route has moved, set a date to switch off the builder app. On that date revoke its keys, remove its deploys and preview addresses, and delete its routes from the proxy.