Amazon DynamoDB Update – Global Tables and On-Demand Backup (opens in new tab)

Maybe sorta kinda -- just a heads-up that CosmosDB can talk multiple API protocols:

  - MongoDB
  - Cassandra
  - Graph API
  - Azure tables
  - DocumentDB

I've used the MongoDB version, and it works ok for the basic CRUD stuff. I cant comment on aggregations, etc.

Not sure from a quick peek if DynamoDB does the same...

Both features, global tables and automatic backups, seem like automation of features you could build yourself.

Global tables use DynamoDB Streams put items from Table A to Table B using conditional put (A Timestamp > B Timestamp).

Automated backup may be DynamoDB Streams or an automated setup of Datapipelines export to s3.

http://docs.aws.amazon.com/datapipeline/latest/DeveloperGuid...

I would say this offers global capabilities while preserving regional isolation. you're composing the global table out of regional tables (which replicate between each other), and you're still using regional endpoints. this means that a failure with one region's table does not have impact on the other.

this model does mean that certain things, like conditional expressions, are less useful/useless because you could very well execute a conditional expression against stale date.