Step 3: Using the Telemetry Stream in an Allocation Dimension

Once the Telemetry data starts flowing and the stream's Ingest Status on CloudZero's Telemetry page is Available, then we will be able to reference this stream in a new Allocation dimension.

Let's add this Allocation dimension to our CostFormation:

    Type: Allocation
    Name: Split Data Lake
        - rds-writes-by-product

Notice that we use the name of that stream rds-writes-by-product that matches the "telemetry-stream" field in our telemetry records (see lines 10 and 20 of the telemetry record JSON). The id field in the telemetry record (Email and Messaging) will now correspond to elements in the Split Data Lake dimension.

In this case, the cost of each of these elements on a given day is a portion of the Shared Data Lake element in the Shared RDS dimension. This portion is defined by the proportional relationship between telemetry records. For example, in the previous step, we defined two records assigning the value 100045 to Email and 1000600 to Messaging, so approximately 9% of the shared cost would be allocated to the Email element and 91% would be allocated to the Messaging element for that day, 2020-01-25T00:00:00Z.

With that, we are finished! Let's review everything in the next step.

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