def describe_reserved_cache_nodes_offerings(ReservedCacheNodesOfferingId=
    None, CacheNodeType=None, Duration=None, ProductDescription=None,
    OfferingType=None, MaxRecords=None, Marker=None):
    """
    Lists available reserved cache node offerings.
    See also: AWS API Documentation
    
    
    :example: response = client.describe_reserved_cache_nodes_offerings(
        ReservedCacheNodesOfferingId='string',
        CacheNodeType='string',
        Duration='string',
        ProductDescription='string',
        OfferingType='string',
        MaxRecords=123,
        Marker='string'
    )
    
    
    :type ReservedCacheNodesOfferingId: string
    :param ReservedCacheNodesOfferingId: The offering identifier filter value. Use this parameter to show only the available offering that matches the specified reservation identifier.
            Example: 438012d3-4052-4cc7-b2e3-8d3372e0e706
            

    :type CacheNodeType: string
    :param CacheNodeType: The cache node type filter value. Use this parameter to show only the available offerings matching the specified cache node type.
            Valid node types are as follows:
            General purpose:
            Current generation: cache.t2.micro , cache.t2.small , cache.t2.medium , cache.m3.medium , cache.m3.large , cache.m3.xlarge , cache.m3.2xlarge , cache.m4.large , cache.m4.xlarge , cache.m4.2xlarge , cache.m4.4xlarge , cache.m4.10xlarge
            Previous generation: cache.t1.micro , cache.m1.small , cache.m1.medium , cache.m1.large , cache.m1.xlarge
            Compute optimized: cache.c1.xlarge
            Memory optimized:
            Current generation: cache.r3.large , cache.r3.xlarge , cache.r3.2xlarge , cache.r3.4xlarge , cache.r3.8xlarge
            Previous generation: cache.m2.xlarge , cache.m2.2xlarge , cache.m2.4xlarge
            
            Notes:
            All T2 instances are created in an Amazon Virtual Private Cloud (Amazon VPC).
            Redis backup/restore is not supported for Redis (cluster mode disabled) T1 and T2 instances. Backup/restore is supported on Redis (cluster mode enabled) T2 instances.
            Redis Append-only files (AOF) functionality is not supported for T1 or T2 instances.
            For a complete listing of node types and specifications, see Amazon ElastiCache Product Features and Details and either Cache Node Type-Specific Parameters for Memcached or Cache Node Type-Specific Parameters for Redis .
            

    :type Duration: string
    :param Duration: Duration filter value, specified in years or seconds. Use this parameter to show only reservations for a given duration.
            Valid Values: 1 | 3 | 31536000 | 94608000
            

    :type ProductDescription: string
    :param ProductDescription: The product description filter value. Use this parameter to show only the available offerings matching the specified product description.

    :type OfferingType: string
    :param OfferingType: The offering type filter value. Use this parameter to show only the available offerings matching the specified offering type.
            Valid Values: 'Light Utilization'|'Medium Utilization'|'Heavy Utilization'
            

    :type MaxRecords: integer
    :param MaxRecords: The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a marker is included in the response so that the remaining results can be retrieved.
            Default: 100
            Constraints: minimum 20; maximum 100.
            

    :type Marker: string
    :param Marker: An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords .

    :rtype: dict
    :return: {
        'Marker': 'string',
        'ReservedCacheNodesOfferings': [
            {
                'ReservedCacheNodesOfferingId': 'string',
                'CacheNodeType': 'string',
                'Duration': 123,
                'FixedPrice': 123.0,
                'UsagePrice': 123.0,
                'ProductDescription': 'string',
                'OfferingType': 'string',
                'RecurringCharges': [
                    {
                        'RecurringChargeAmount': 123.0,
                        'RecurringChargeFrequency': 'string'
                    },
                ]
            },
        ]
    }
    
    
    :returns: 
    General purpose:
    Current generation: cache.t2.micro , cache.t2.small , cache.t2.medium , cache.m3.medium , cache.m3.large , cache.m3.xlarge , cache.m3.2xlarge , cache.m4.large , cache.m4.xlarge , cache.m4.2xlarge , cache.m4.4xlarge , cache.m4.10xlarge
    Previous generation: cache.t1.micro , cache.m1.small , cache.m1.medium , cache.m1.large , cache.m1.xlarge
    
    
    Compute optimized: cache.c1.xlarge
    Memory optimized:
    Current generation: cache.r3.large , cache.r3.xlarge , cache.r3.2xlarge , cache.r3.4xlarge , cache.r3.8xlarge
    Previous generation: cache.m2.xlarge , cache.m2.2xlarge , cache.m2.4xlarge
    
    
    
    """
    pass
