UPDATE: the service is restored and everyone should be seeing normal behavior. (caveat: if you use the REST API, please see below). Details and post-mortem later today.
The service was disrupted for a couple of hours (approx 8AM PST to 10AM PST) except for customers in Europe who had uninterrupted service. The general symptom was very slow load times for the website and timeouts for app syncs. The root cause was server overload caused by an inadvertent runaway customer process that swamped our REST API and effectively denied service to all other traffic.
At the moment, we have disabled the REST API for all customers while we put some more effective throttling in place. We hope to have this fully enabled later today.
Hi community, we are experiencing issues with the AppSheet service impacting applications and our website. The engineering team is investigating, we will keep you posted with updates and resolution.