Sirv's primary image processing datacentre in Germany experienced sporadic degraded performance due to backbone maintenance. Approximately 1% of requests for unprocessed images were slow to load, taking a few seconds to be returned. To minimise the number of slow requests, a higher than usual proportion of requests were routed to Sirv's backup image processing datacentre. Requests fulfilled by the CDN were unaffected, typically returning requests at nominal speeds of 20-100ms.