The incident is now resolved and the system is full operational. The issue started at 16:56:16 UTC and ended at 16:57:31 UTC.
The Event API caches event keys for a duration so not all requests would have been effected with sending events, but some may have. Our SDKs automatically retry up to 5 times with backoff, but due to the time window being >60s, many retries might have failed as well.
Our REST API and dashboards returned once the connections were re-established.
The cause of this incident is related to a networking issue that we are working on follow up mitigation efforts to avoid this issue from happening again.