Method 1: IMS-4-199 is not analyzed. It contributes to the final score and can not be cached.
Method 2: IMS-4-199 might be analyzed (depends on your mapping). It contributes to the final score and can not be cached.
Method 3: IMS-4-199 is not analyzed. It does not contributes to the final score and can be cached.
Method 3 is the most efficient thing to do if you don't care about scoring and just want to filter by a given value.
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