Question on design for Marketplace metering

[cailinw]

Very helpful repo, thank you. I had a question regarding the motivation behind the design of how metering records are submitted to Marketplace.

What is the motivation/reason for having the metering-hourly-job.js function send records to a SQS queue, and having another function to read records from this queue and submit to Marketplace? Would it still work to have the metering-hourly-job.js function both aggregate the records and submit to Marketplace and record the response in the table? Are there any downsides about using this approach?

Thank you.