Viewing last 25 versions of post by GenericArchangel in topic "The Largest Database Migration I Have Ever Written"

So I was looking through the changelog to see if I could figure out the exact reason the site was updated, and noticed this gem with no additional context. I assume this is something fairly important to how the site works, even though there have been no significant end-user changes or issues (congrats to the dev team on that, btw). So, out of curiosity: what was that update, and what is the whole database migration thing about?


 
(yes I see that was two days ago, but I presume the change "deployed" is related)

So I was looking through the changelog to see if I could figure out the exact reason the site was updated, and noticed this gem with no additional context. I assume this is something fairly important to how the site works, even though there have been no significant end-user changes or issues (congrats to the dev team on that, btw). So, out curiosity: what was that update, and what is the whole database migration thing about?

(yes I see that was two days ago, but I presume the change "deployed" is related)