First of all, I would like to thank you for making this component available to the community. I've used it to make a few tests and see if it would be a good fit for an application our company is developing.
The reason I rated it 4 stars is that the cache does not persist between requests - in my case this was a no-go because we needed the values to persist over consecutive REST service calls and eventually allow the cache values be processed on a BPT.