3 ms·

In a database Undo, in spite of the name, is the act of applying a transaction log to return to a particular state. I used to work on databases earlier in my ca

by edge17 8y ago

In a database Undo, in spite of the name, is the act of applying a transaction log to return to a particular state. I used to work on databases earlier in my career, so selling this as a new invention seems somewhat bizarre to me.

delta-v 8y ago
That's not what Aurora is doing. What you have described is more like "git revert". It's O(num of transcation in the undo log). Aurora is a log structured db, they can just reset their DB to a particular LSN. i.e. doing "git reset --hard", which's O(1).
- awgupta 8y ago
  that's correct.