python-dynamodb-autoincrement

Use optimistic locking to put DynamoDB records with auto-incrementing attributes. This is a Python port of https://github.com/nasa-gcn/dynamodb-autoincrement. Inspired by:

• https://aws.amazon.com/blogs/aws/new-amazon-dynamodb-transactions/
• https://bitesizedserverless.com/bite/reliable-auto-increments-in-dynamodb/