Hi all,

There has been interest in having more transparency around some of the operational problems around Wikidata Query Service, to better surface the work it takes in keeping the service running.

Yesterday, on Sunday, 06 March, there was an outage that lasted a few hours. During this time, WDQS was overloaded and started sporadically blocking client traffic. This was directly related to the ongoing issues with Blazegraph, and why our main priority has been focused on finding a suitable replacement for it moving forward.

The incident summary is available here.

Apologies to all who were affected by this incident.

Best,
Mike