!hack & redesign: Fun with Guava's ListeningExecutorService

!hack & redesign: Fun with Guava's ListeningExecutorService

The Guava API has the advantage to allow one to register a callback to a ListenableFuture and apply transformations to futures, resulting in a chain of non-blocking operations, very much like Scala's Futures. Non-blocking concurrency will greatly limit resource usage, if used properly since there will be no idle threads blocking while waiting on the results of other threads' computations.

Just for illustration purposes, an example of using Guava's future transformation capabilities to implement fully non-blocking asynchronous computations follows. Enjoy!

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