def update_scaling_parameters(DomainName=None, ScalingParameters=None):
    """
    Configures scaling parameters for a domain. A domain's scaling parameters specify the desired search instance type and replication count. Amazon CloudSearch will still automatically scale your domain based on the volume of data and traffic, but not below the desired instance type and replication count. If the Multi-AZ option is enabled, these values control the resources used per Availability Zone. For more information, see Configuring Scaling Options in the Amazon CloudSearch Developer Guide .
    See also: AWS API Documentation
    
    
    :example: response = client.update_scaling_parameters(
        DomainName='string',
        ScalingParameters={
            'DesiredInstanceType': 'search.m1.small'|'search.m1.large'|'search.m2.xlarge'|'search.m2.2xlarge'|'search.m3.medium'|'search.m3.large'|'search.m3.xlarge'|'search.m3.2xlarge',
            'DesiredReplicationCount': 123,
            'DesiredPartitionCount': 123
        }
    )
    
    
    :type DomainName: string
    :param DomainName: [REQUIRED]
            A string that represents the name of a domain. Domain names are unique across the domains owned by an account within an AWS region. Domain names start with a letter or number and can contain the following characters: a-z (lowercase), 0-9, and - (hyphen).
            

    :type ScalingParameters: dict
    :param ScalingParameters: [REQUIRED]
            The desired instance type and desired number of replicas of each index partition.
            DesiredInstanceType (string) --The instance type that you want to preconfigure for your domain. For example, search.m1.small .
            DesiredReplicationCount (integer) --The number of replicas you want to preconfigure for each index partition.
            DesiredPartitionCount (integer) --The number of partitions you want to preconfigure for your domain. Only valid when you select m2.2xlarge as the desired instance type.
            

    :rtype: dict
    :return: {
        'ScalingParameters': {
            'Options': {
                'DesiredInstanceType': 'search.m1.small'|'search.m1.large'|'search.m2.xlarge'|'search.m2.2xlarge'|'search.m3.medium'|'search.m3.large'|'search.m3.xlarge'|'search.m3.2xlarge',
                'DesiredReplicationCount': 123,
                'DesiredPartitionCount': 123
            },
            'Status': {
                'CreationDate': datetime(2015, 1, 1),
                'UpdateDate': datetime(2015, 1, 1),
                'UpdateVersion': 123,
                'State': 'RequiresIndexDocuments'|'Processing'|'Active'|'FailedToValidate',
                'PendingDeletion': True|False
            }
        }
    }
    
    
    :returns: 
    RequiresIndexDocuments : the option's latest value will not be deployed until  IndexDocuments has been called and indexing is complete.
    Processing : the option's latest value is in the process of being activated.
    Active : the option's latest value is completely deployed.
    FailedToValidate : the option value is not compatible with the domain's data and cannot be used to index the data. You must either modify the option value or update or remove the incompatible documents.
    
    """
    pass
