Re:Ask HN: Have you ever migrated a large/old project to a d...
by giantg2 on Wednesday September 14, 2022 @01:46PM
(#32840642)
Yeah, we've done this a couple times ar work.
UI stuff tends to be a big bang migration since we don't want users to need two portals. We do select a small group of users to pilot the new portal.
Backend or midtier stuff tends to go piecemeal since it's easier to swap out an API, or start calling new APIs while the old monolith is used for the rest of the calls.
Either way, you need a plan of what to migrate and how to migrate it. Generally aim for parody with the legacy system before adding new functionality.
UI stuff tends to be a big bang migration since we don't want users to need two portals. We do select a small group of users to pilot the new portal.
Backend or midtier stuff tends to go piecemeal since it's easier to swap out an API, or start calling new APIs while the old monolith is used for the rest of the calls.
Either way, you need a plan of what to migrate and how to migrate it. Generally aim for parody with the legacy system before adding new functionality.