Cadmus Outage History

Cadmus is up right now

Pingoru has recorded 15 incidents for Cadmus: 3 in the last 12 months and 0 in the last 90 days.

Source: cadmus.statuspage.io

15incidents recorded
3last 12 months
0last 90 days
40 minutestypical duration

Incidents, newest first

Critical March 30, 2026 Increased error rate 12m Cadmus UK Student and Teachers API, Cadmus AU Student and Teachers API, Cadmus US Student and Teachers API, Cadmus AU Student and Teachers Apps and 2 more

Started Mar 30, 2026, 06:16 AM UTC· resolved Mar 30, 2026, 06:29 AM UTC

  1. identified Mar 30, 2026, 06:16 AM UTC

    The issue has been identified and a fix is being implemented.

  2. identified Mar 30, 2026, 06:28 AM UTC

    We are continuing to work on a fix for this issue.

  3. monitoring Mar 30, 2026, 06:29 AM UTC

    A resolution to the issue has been released. Assessments will load successfully now.

  4. resolved Mar 30, 2026, 06:29 AM UTC

    This incident has been resolved.

Read the full incident report →

Critical March 18, 2026 Cadmus Teacher and Student Applications unavailable 1h 31m Cadmus AU Student and Teachers API, Cadmus AU Student and Teachers Apps

Started Mar 18, 2026, 04:30 AM UTC· resolved Mar 18, 2026, 06:02 AM UTC

  1. identified Mar 18, 2026, 05:52 AM UTC

    The issue has been identified and a fix is being implemented.

  2. monitoring Mar 18, 2026, 06:00 AM UTC

    A fix has been released and we are monitoring stability.

  3. resolved Mar 18, 2026, 06:02 AM UTC

    This incident has been resolved

Read the full incident report →

Major February 22, 2026 Database connection interruptions 15m Cadmus AU Student and Teachers API

Started Feb 22, 2026, 11:15 PM UTC· resolved Feb 22, 2026, 11:30 PM UTC

  1. identified Feb 23, 2026, 12:55 AM UTC

    The issue has been identified and a fix is being implemented.

  2. monitoring Feb 23, 2026, 12:59 AM UTC

    There was a temporary, unexpected database interruption outside the maintenance window. Requests were unable to complete. The database sustained no data loss, and we expect retries to be resumed immediately.

  3. resolved Feb 23, 2026, 01:17 AM UTC

    This incident has been resolved.

Read the full incident report →

Major July 24, 2025 Increased API errors 10m Cadmus AU Student and Teachers API, Cadmus AU Data API and Reports

Started Jul 24, 2025, 01:25 AM UTC· resolved Jul 24, 2025, 01:35 AM UTC

  1. identified Jul 24, 2025, 01:30 AM UTC

    The issue has been identified and a fix is being implemented.

  2. monitoring Jul 24, 2025, 01:30 AM UTC

    A fix has been deployed and the APIs are expected to be back online soon.

  3. resolved Jul 24, 2025, 01:31 AM UTC

    This incident has been resolved.

  4. postmortem Jul 28, 2025, 02:56 AM UTC

    # What Happened * A database maintenance period triggered a migration on the database that was meant to tighten constraints for data consistency. For example, old text columns that were supposed to be UUIDs were updated. * The change created incompatibilities between certain kinds of API requests and the database, returning errors. For example LTI launch requests from LMSs were affected. Not all requests were affected. # How it Happened * Database maintenance periods are normally configured outside busy hours per Cadmus region. A configuration change updated this erroneously and went unnoticed. * Cadmus APIs are always tested to be backwards compatible over at-least 2 versions. However this type of change created a missed inconsistency that should have been tested. # How it was fixed * New API versions were immediately deployed to replace the older versions to ensure the database and API were consistent. The deployed replaced the in-compatible APIs. # Future Mitigation * Database upgrade schedules were manually checked and configured. The central infrastructure configuration now enforces the maintenance periods correctly. * A new release process of testing data-consistency type migrations is now in-place. We intent to perform more such migrations as we cleanup old-data and old-APIs with the new process.

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Major April 17, 2025 Turnitin UK API failures –

Started Apr 17, 2025, 12:48 AM UTC· resolved Apr 17, 2025, 12:48 AM UTC

  1. resolved Apr 17, 2025, 12:48 AM UTC

    Turnitin UK APIs are being blocked with HTTP 403, resulting in a backlog of Cadmus Submissions not received by Turnitin yet. https://turnitin.statuspage.io/incidents/gb92wp9d2fd8

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Major March 7, 2025 Cadmus API failing in UK region 8m Cadmus UK Student and Teachers API, Cadmus UK Student and Teachers Apps

Started Mar 07, 2025, 03:06 AM UTC· resolved Mar 07, 2025, 03:15 AM UTC

  1. investigating Mar 07, 2025, 03:06 AM UTC

    We are currently investigating this issue.

  2. resolved Mar 07, 2025, 03:15 AM UTC

    The incident has been resolved. A backend database migration blocked a regular release and took longer than expected to complete.

Read the full incident report →

Major January 21, 2025 Camdus API responding with errors due to mismatch in versions 34m Cadmus UK Student and Teachers API, Cadmus AU Student and Teachers API, Cadmus US Student and Teachers API, Cadmus AU Student and Teachers Apps and 2 more

Started Jan 21, 2025, 04:54 AM UTC· resolved Jan 21, 2025, 05:29 AM UTC

  1. identified Jan 21, 2025, 04:54 AM UTC

    The issue has been identified and a fix is being implemented.

  2. identified Jan 21, 2025, 04:57 AM UTC

    We are continuing to work on a fix for this issue.

  3. monitoring Jan 21, 2025, 05:27 AM UTC

    A fix has been implemented and we are monitoring the results.

  4. resolved Jan 21, 2025, 05:29 AM UTC

    This incident has been resolved.

Read the full incident report →