In this article we are going to set up dynamodb on our local development environment. A short description of a couple of easy-to-use management tools is included.

DynamoDB

Start by downloading the DynamoDB development version. Uncompress the file and …

The BatchWriteItem operation allows us to work with groups of up to 25 items per request. Additionally, we can put and delete items to one or multiple tables. Amazon DynamoDB’s page says:

A single call to BatchWriteItem can write up to 16 MB …

Should I use a map or a list? A simple rule:

• If you need to update or remove an item, lists only allow you to do it by index. While maps let you do it by key.

Their simplified representation goes like this:

1{
2  "someMap": {
3 …