3 ms·

I’m confused, how is this different than an Undo log?

• misframer 8y ago
  This takes advantage of log-structured storage so there isn't any "undoing".
  • 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.