DataCite API request pattern

[KellyStathis]

DataCite has noticed around that 38% of GBIF's requests are resulting in a 404 response. @dnoesgaard suggested I create this issue.

There is an attempt GET metadata for each around the time it is created. Sometimes, the GET requests are sent (or at least received) immediately before the POST request, so DataCite returns a 404 because the DOI doesn't exist yet. We are also seeing that GET requests are retried several times in short succession.

I'm wondering if this is intentional, and/or if it would be possible to introduce a slight delay here to reduce the errors. Here is a recent subset of our logs showing the request pattern: extract-2023-11-08T21_55_39.934Z.csv