Support synchronous get in Spring's cache abstraction

Spring Framework 4.3 has introduced a read-through option See https://jira.spring.io/browse/SPR-9254 for more details. In practice this would require you to compile against 4.3 and implement the additional method.

The code is meant to be backward compatible with previous version, as long as you're guarding the new exception in an inner class, see this implementation for an example

Let me know if I can help.