International Street API latency post mortem

During Thursday 11 March 2020 and Saturday 13 March 2020 we noticed higher than normal latencies in our International Street API endpoint in two of our facilities. The problem was found to be coming where the default configuration in these specific facilities used slower, magnetic hard disk drives (HDD) instead of faster, solid state drives (SSD). This combined with a large influx of new requests from customers to cause the latency. The servers were quickly changed to all use solid state drives and the latency returned to normal. We have updated the configuration to explicitly require high-performance solid-state drives for the International Street API endpoint.