I see these errors fairly often:

CloudFront attempted to establish a connection with the origin, but either the attempt failed or the origin closed the connection.

Am I doing something wrong? Or should I just retry when this happens? I'm doing bulk inserts / deletes as part of working on a migration script, so that may have something to do with it.

there's lots of information about avoiding those errors in the forum, for example here: https://www.graph.cool/forum/t/import-data-into-node/359?u=nilan

Great, thanks for the pointer