3 ms·
I think it was already strongly consistent within regions? like if you had tried to read a non-existent key, then wrote to it, it might continue to appear to n
by dilatedmind 6y ago
I think it was already strongly consistent within regions?
like if you had tried to read a non-existent key, then wrote to it, it might continue to appear to not exist for a minute?
- TheDong 6y agoTheir previous consistency was RAW, but not RAU (for most regions. I think us-east-1 was missing RAW consistency for quite a while). After a write, you would _always_ be able to read the key you just wrote. After an update, you could get a stale copy of the key if your subsequent read hit a different server.
- heartofgold 6y agoNot quite _always_. There were some documented caveats... the one I hit before was: Read nonexistent key, followed by a write of that same key, and then a subsequent read could return a stale read saying it didn’t exist. (even though it had just been written for the first time.) Anyway I am glad to see these gaps and caveats have been closed.