1. A method to maintain data store performances upon transfer between cloud computing environments, the method comprising: submitting data requests to an original data store at a source datacenter; submitting the data requests to a filter to record and analyze; creating a new key value structure at a new data store at a target datacenter based on results of the requests to the original data store and analyses by the filter that employs machine learning; assigning a score to each original data store performance and each new data store performance; collecting scores of original data store performances and scores of new data store performances for a query and a corresponding key value structure at the new data store; comparing the scores of the original data store performances and the scores of the new data store performances; and in response to a determination that the scores of the original data store performances are not substantially equal to the scores of the new data store performances, discarding the corresponding key value structure.