## Package cascading.management

Interface Summary
DocumentService: Interface DocumentService provides coarse grained hooks for managing various statistics.
MetricsService: Interface MetricsService provides fine grained hooks for managing various metrics.
UnitOfWork<Stats extends CascadingStats>: Interface UnitOfWork is a common interface for `Flow` and `Cascade` allowing them to be used interchangeably.
UnitOfWorkSpawnStrategy: The interface UnitOfWorkSpawnStrategy is a strategy for allowing pluggable thread management services into any `UnitOfWork` class.

Class Summary
CascadingServices: Class CascadingServices is the root class for pluggable services Cascading can call out to for distributed monitoring and management systems.
CascadingServices.NullDocumentService: Class NullDocumentService provides a null implementation.
CascadingServices.NullMetricsService: Class NullMetricsService provides a null implementation.
UnitOfWorkExecutorStrategy: Class UnitOfWorkExecutorStrategy uses a simple `Executors.newFixedThreadPool(int)` `ExecutorService` to spawn threads.

Exception Summary
DocumentServiceException: Exception DocumentServiceException is thrown from within a `DocumentService` instance.

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