MDS API outage
Timeline · 2 updates
- identified Jun 15, 2026, 01:29 PM UTC
Requests to the MDS API are returning errors. We've identified the issue and are working on a fix.
- resolved Jun 15, 2026, 02:14 PM UTC
The MDS API is now operational.
DataCite had 7 outages in the last 2 years totaling 46h 14m of downtime — averaging 0.3 incidents per month.
There were 7 DataCite outages since July 8, 2025 totaling 46h 14m of downtime. Each is summarised below — incident details, duration, and resolution information.
Requests to the MDS API are returning errors. We've identified the issue and are working on a fix.
The MDS API is now operational.
We are investigating an issue where new DOI records and DOI record updates may be taking longer than usual to appear in services like Fabrica, Commons, and the REST API. API requests are still being received and processed successfully.
We have identified and resolved the issue. New records and updates should now appear as expected in services like Fabrica, Commons, and the REST API, and queued changes have been processed.
We are investigating degraded performance across our services. This is manifesting as occasional error messages or slow response times for API requests and/or frontend services.
Performance has stabilized. We are continuing to monitor.
Performance of all services has returned to normal levels.
We are investigating intermittent performance issues affecting our services, which may result in slow response times for API requests and frontend applications.
Intermittent performance issues have stabilized. We will continue to monitor.
We're experiencing some timeouts adding to our search index cluster, this will mostly be noticeable in DOIs that are registered might not be findable via certain API endpoints and search/management interfaces. We believe this is a disk space issue due to increased demand and are investigating a remedy. Note no actual data loss as this is just the indexing side, data storage is unaffected and therefore DOI registration is operational.
A temporary fix has been put in place and things should be working now, but we may still have a period of time where some things have not been indexed. We are working on a longer term fix for increased demand and also add any missing items (i.e. DOIs) to our search indices.
We've added a further fix and all search indexing and related services should be operational. We are now monitoring and looking to clean up any missing data in the indices.
All systems are operational and data unavailable in search index has been restored.
We've identified an issue that may affect access to the DataCite homepage at https://datacite.org and the Make Data Count homepage at https://makedatacount.org. Other DataCite services and APIs are not affected. The issue has been isolated, and we are working on a resolution.
The DataCite homepage at https://datacite.org and the Make Data Count homepage at https://makedatacount.org are now available. We will continue to monitor.
The test services that are powered by our OpenSearch cluster are currently not accepting new index writes. This means data is still being saved to the test database, but new records and record updates (for DOIs, members, repositories, etc.) are not appearing in REST API list responses, Fabrica list views, and other places that rely on the OpenSearch index We believe we already know the issue but are currently discussing about how best to resolve. Production services are not affected and are operating as normal.
Test services are restored.