public void markPutBlobRequestRateBySize(long blobSize) {
    if (blobSize <= smallBlob) {
      putSmallBlobRequestRate.mark();
    } else if (blobSize <= mediumBlob) {
      putMediumBlobRequestRate.mark();
    } else {
      putLargeBlobRequestRate.mark();
    }
  }
Update put blob request rate based on blob size.
ambry-commons/src/main/java/com/github/ambry/commons/ServerMetrics.java