MemoryCache.GetValues method implementation incorrect

[sergethedev17]

Documentation for MemoryCache.GetValues(IEnumerable, String) Method specifies that:

Returns
IDictionary<String,Object>
A set of cache entries that correspond to the specified keys.

Remarks
If a cache entry that is represented by the keys does not exist, the corresponding value for the returned object in the dictionary is set to null. Therefore, the returned dictionary always has the same number of items as the number of elements in keys.

GetValues implementation is different.

1. First, null entries corresponding to keys that do not exist are not added.

2. Second, if none of the keys are found, then method returns null instead of IDictionary<String,Object>.

We need to either update documentation or patch the implementation.

[KKhurin]

Thank you @sergethedev17 for reporting this. My instinctive reaction would be to update the documentation since this is the same behavior on Core and Desktop.

[corneliusmunz]

@StephenBonikowsky , @HongGit Any news on that? Either the documentation or the implementation should be changed.