A major difference is that DocumentDB is a middle step between MongoDB and DynamoDB. DynamoDB is a fully managed scalable service where you set the upper limit of it’s potential. DocumentDB is a bit more hands on and you have to select the number of instances for the cluster and the instance sizes. This means … Read more
Amazon DynamoDB provides the Scan operation for this purpose, which returns one or more items and its attributes by performing a full scan of a table. Please be aware of the following two constraints: Depending on your table size, you may need to use pagination to retrieve the entire result set:NoteIf the total number of scanned items exceeds the … Read more
You are only providing half of your primary key. Your primary key is a combination of the partition key and range key. You need to include the range key in your Key attribute in the update parameters.
To query on fields which are not the hash key you need to use a Global Secondary Index (GSI). Take a look at this AWS Post for more details on GSI’s. UPDATE Feb 2015: It is now possible to add a GSI to an existing table. See the Amazon Docs for more details. Sadly you cannot add a GSI to an … Read more