trait Cache[K, V] extends AnyRef
Simple caching api. So simple it's probably horribly bad in some way. OH, right... synchronization could be bad here...
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withValue[U](key: K, default: ⇒ V)(f: (V) ⇒ U): U
This method attempts to use a cached value, if one is found.
This method attempts to use a cached value, if one is found. If there is no cached value, the default is used and placed back into the cache.
Upon any exception, the cache is cleared.
TODO - Allow subclasses to handle specific exceptions.
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