just spent all night debugging a nightmare migration where we decoupled the monolith. moving to microsevrices is easy until u realize ur caches are serving
stale data because the old and new stores aren't synced. it creates this massive risk of
silent data drift that is nearly impossible to catch without a dual-read strategy.
> if you don't validate both sides during cutover, you're basically flying blind.it turns out
dirty reads are the real killer here when u're trying to keep everything consistent. has anyone else dealt with
the absolute chaos of managing cache consistency during a live switch? i am thinking about implementing a strict check against the source of truth before any final cutover. anyway.
link:
https://www.sitepoint.com/dual-read-cache-consistency-for-live-database-migrations/?utm_source=rss