How to write 5000 records into DynamoDB Table

Question

I have a use case where I have to write 5000 records into dynamoDB table in one shot. I am using batchSave api of DynamoDBMapper Library. it can write upto 25 records in one go. can I pass the list of 5000 records to it and it will internally convert them into batch of 25 records and write to dynamodb table or I will have to handle this thing in my code using conditional some logic and will pass only 25 records to batchSave?

Answer 1

According to documentation use the batchSave() command 

Indeed, it splits up the items you give it into appropriately-sized batches (25 items) and writes them using the DynamoDB BatchWriteItem operation.

You can see the code that does this in batchWrite() in DynamoDBMapper.java: