Dear GBIF community

Please be aware of this communication from DataCite which will likely cause 
some disruption on GBIF services with relation to DOI issuing.

Many thanks,
Tim


From: Martin Fenner <martin.fen...@datacite.org>
Reply-To: "allus...@datacite.org" <allus...@datacite.org>
Date: Friday, 2 August 2019 at 08.22
To: DataCite Allmembers <allmemb...@datacite.org>, DataCite Allusers 
<allus...@datacite.org>
Subject: [datacite-allusers] Delays in DOI registrations and updates

Dear DataCite members and users,

processing of DOI registrations is currently delayed by up to 12 hours, 
affecting registration in the handle system and inclusion in the search index. 
This is caused by an unusually very large number of maintenance jobs running in 
our system, and we expect this to be resolved by the end of the day. This is a 
delay in processing, all DOI registrations and updates are successfully 
captured by our system. Requesting or searching DOI metadata is not affected. 
Please check https://status.datacite.org for updated status information, or 
subscribe to email updates at this site.

The reason for the very large number of maintenance jobs is two important 
updates to better handle malformed dates in DOI metadata and to prepare for 
affiliation identifier support in the upcoming schema 4.3. The load on the 
system for these two tasks is much higher than expected, causing the delays 
described above. I sincerely apologize for the inconvenience this is causing, 
and going forward we will be better in giving advance notice with scheduled 
maintenances for situations like this.

What is happening today is unrelated to the service incident we reported on 
July 24 (https://status.datacite.org/incidents/d00gnm05ps3k). That incident was 
caused by a very high number (> 1 million in 24 hours) of DOI registration 
requests by a single client, temporarily overloading the system. To prevent 
this from happening in the future, we have this Monday implemented 
rate-limiting of 3,000 requests per IP address within 5 min, which translates 
to 10 requests per second or 36,000 requests per hour per IP address. Please 
reach out to supp...@datacite.org<mailto:supp...@datacite.org> if you need 
higher rate-limits temporarily or generally, and we can adjust the rate-limits 
for your IP addresses. This is the first time we implemented rate-limiting, but 
we had to take this step to make sure DOI registrations for all users are not 
affected by high numbers of requests by a single user. We have also increased 
the number of servers and improved monitoring to better handle these kinds of 
situations in the future.

Please reach out to me via supp...@datacite.org<mailto:supp...@datacite.org> if 
you have any comments or feedback.

Kind regards,

Martin Fenner

--
Martin Fenner
DataCite Technical Director
http://orcid.org/0000-0003-1419-2405
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