df8a4 No.1441
i was reading up about some common pitfalls in database migrations and stumbled upon something that really hit home. most worry too much about "this will be quick" but way more dangerous is hearing someone say, "we can always roll back." sure enough sounds legit when youre just swapping out a cache or stateless service - until its the system holding years of operational history audit-critical records dispute workflows ⬇️ and those pesky long-tail queries that pop up only in emergencies. i mean, how do ya roll back from THAT?
anyone else run into this issue or have any tips on pulling off a smooth migration without breaking the business
article:
https://dzone.com/articles/retiring-a-tier-0-legacy-database-without-breaking