Asynchronous backoff policy

As opposed to a retry policy a back off policy doesn't fail at a maximum number of retries but continues to try. Generally used with a queue.

Allows an operation to be run inside a lease block ensuring that the operation will never happen in parallel even in a multi-thread / multi-server environment.

Allowing the caller to acquire and release leases. A lease allows the user to perform a lock in a multi-server environment by using a shared locking resource (in Azure blob storage)

Factory for the lease manager

An interface that can be attached to implementations to support resource creation (such as Azure tables)