public void markGetBlobRequestRateBySize(long blobSize) {
    if (blobSize <= smallBlob) {
      getSmallBlobRequestRate.mark();
    } else if (blobSize <= mediumBlob) {
      getMediumBlobRequestRate.mark();
    } else {
      getLargeBlobRequestRate.mark();
    }
  }
Update get blob request rate based on blob size.
ambry-commons/src/main/java/com/github/ambry/commons/ServerMetrics.java