This web service provides atomic counters as an add-on feature for the NoSQL cloud database Amazon DynamoDB. Specifically, it provides an auto-increment attribute: unique values for the id column in DynamoDB tables.
Another feature of Stateful Web Primitives is a concurrent lock. It allows for setting up an atomic lock, running sensitive processes, and then removing the lock. Only one process at a time will be allowed while the lock is in place.
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