RFR: storage: cache deserialized values in FileStorage

[Robin Westberg]

On Thu, 11 Jun 2020 16:03:15 GMT, Erik Helin <ehelin at openjdk.org> wrote:

> Hi all,
> 
> please review this patch that adds caching of the deserialized value to `FileStorage`. There is no point in
> deserializing the same `String` over and over again, the deserialized value will remain the same.
> Testing:
> - [x] Added a new unit test
> - [x] `make test` passes on Linux x64
> 
> Thanks,
> Erik

Looks good!

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Marked as reviewed by rwestberg (Reviewer).

PR: https://git.openjdk.java.net/skara/pull/656