Summary

On April 19th, 2021, beginning at 5:14 a.m. ET, Answers Serving began intermittently returning elevated error rates for requests in the EU region. Engineers began investigating and rerouted traffic at 7:20 a.m. ET, bringing error rates back to normal for the EU region.

Root Cause

The underlying data store used by Answers in the EU region began to spuriously return a new irrecoverable error code to our system, causing some requests to fail.

Remediation

We have updated our serving infrastructure to handle transient errors of this nature from the underlying data store.