dynamodb pagination

querystring parameters changes or do i have to control

Im not sure on which querystring params you are referring to but pagination works like this:

1. Request up to 1MB of data
2. DynamoDB returns 1MB and provides you with a LastEvaluatedKey which is a pointer to the last item it read
3. In subsequent requests, you pass LastEvaluatedKey to the ExclusiveStartKey parameter, which tells DynamoDB where to begin reading
4. This logic keeps happening until there is no LastEvaluatedKey returned, which means you have read all the data available.