3 ms·

I think this is written from an ops point of view. Dynamo-based systems allow a client to wait until at least X servers have acknowledged the write, and use eve

I think this is written from an ops point of view. Dynamo-based systems allow a client to wait until at least X servers have acknowledged the write, and use eventual consistency in case there is some service disruption. I personally didnt know they used meta data tables in Dynamo, and that sounds like they lost one of the most important traits which gave Dynamo its super-high availability abilities, which is having all the cluster state in the clients rather than in the servers.

sillypog 11y ago
Thank you for saying that! I just read the Dynamo paper the other day and that was the first thing that jumped out at me when I read this outage description. Now I feel like I understood the paper.
- zackelan 11y ago
  Despite the name, DynamoDB is not actually an implementation of the Dynamo paper. It's influenced by those ideas, as well as the issues with scaling SimpleDB, but other than that is a from-scratch implementation. http://www.allthingsdistributed.com/2012/01/amazon-dynamodb.html http://www.allthingsdistributed.com/2012/01/amazon-dynamodb....