On September 22nd, 2020, beginning at 2:04 p.m. ET, Yext engineers began tracking elevated error rates in the Customer Portal. Issues were mitigated by 2:14 p.m. ET, at which point error rates returned to normal. During this period, some pages in the Customer Portal failed to load.
An internal server which processes data for the Customer Portal was overwhelmed by a number of exceedingly large requests, causing it to fail to serve other traffic. Once the large requests were processed, error rates returned to normal.
We are actively conducting performance testing and improvements on our internal servers, which will improve overall capacity and avoid this class of problems in the future.