Shippo provides a web platform and API that helps businesses coordinate and track shipping with multiple carriers.

When it was released in 2013, Amazon Redshift was the first cloud data warehouse. It uses defined schemas, columnar data storage, and massively parallel processing (MPP) architecture to provide a base for analytics reporting.

Shippo provides a REST API that lets you get information about shipments, manifests, rates, and many more elements. If, for example, you wanted to retrieve a customs declaration, you could call GET /customs/declarations/[objectID].

The Shippo API returns data in JSON format. For example, the result of a call to retrieve a customs declaration might look like this:

{
   "object_created":"2017-11-17T01:01:08.306Z",
   "object_updated":"2017-11-17T01:01:08.306Z",
   "object_id":"e2197a54da9d470480f4f8796cc419cb",
   "object_owner":"potamus@goshippo.com",
   "object_state":"VALID",
   "certify_signer":"Oscar Potamus",
   "certify":true,
   "items":[
      "5087f181d1dc4b14b73fdbf636498886"
   ],
   "non_delivery_option":"ABANDON",
   "contents_type":"MERCHANDISE",
   "contents_explanation":"T-Shirt purchase",
   "exporter_reference":"",
   "importer_reference":"",
   "invoice":"#123123",
   "commercial_invoice":false,
   "license":"",
   "certificate":"",
   "notes":"",
   "eel_pfc":"NOEEI_30_37_a",
   "aes_itn":"",
   "disclaimer":"",
   "incoterm":"",
   "metadata":"Order ID #123123",
   "test": true
}

If you don't already have a data structure in which to store the data you retrieve, you'll have to create a schema for your data tables. Then, for each value in the response, you'll need to identify a predefined datatype (INTEGER, DATETIME, etc.) and build a table that can receive them. Shippo's API documentation should tell you what fields are provided by each endpoint, along with their corresponding datatypes.

Complicating things is the fact that the records retrieved from the source may not always be "flat" – some of the objects may actually be lists. This means you'll likely have to create additional tables to capture the unpredictable cardinality in each record.

When you've identified all of the columns you want to insert, use the Reshift CREATE TABLE statement to create a table in your data warehouse to receive all the data.

Once you have a table built, it may seem like the easiest way to replicate your data (especially if there isn't much of it) is to build INSERT statements to add data to your Redshift table row by row. If you have any experience with SQL, this probably will be your first inclination. Think again! Redshift isn't optimized for inserting data one row at a time. If you have a high volume of data to be inserted, you should load the data into Amazon S3 and then use the COPY command to load it into Redshift.

At this point you've coded up a script or written a program to get the data you want and successfully moved it into your data warehouse. But how will you load new or updated data? It's not a good idea to replicate all of your data each time you have updated records. That process would be painfully slow and resource-intensive.

Instead, identify key fields that your script can use to bookmark its progression through the data and use to pick up where it left off as it looks for updated data. Auto-incrementing fields such as updated_at or created_at work best for this. When you've built in this functionality, you can set up your script as a cron job or continuous loop to get new data as it appears in Shippo.

And remember, as with any code, once you write it, you have to maintain it. If Shippo modifies its API, or the API sends a field with a datatype your code doesn't recognize, you may have to modify the script. If your users want slightly different information, you definitely will have to.

Redshift is great, but sometimes you need to optimize for different things when you're choosing a data warehouse. Some folks choose to go with Google BigQuery, PostgreSQL, Snowflake, or Microsoft Azure SQL Data Warehouse, which are RDBMSes that use similar SQL syntax, or Panoply, which works with Redshift instances. Others choose a data lake, like Amazon S3 or Delta Lake on Databricks. If you're interested in seeing the relevant steps for loading data into one of these platforms, check out To BigQuery, To Postgres, To Snowflake, To Panoply, To Azure Synapse Analytics, To S3, and To Delta Lake.