Cloudflare resolved their issue, all systems are back online

What happened

• Production API, API Documentation, and Dashboard stopped responding at Jun 21, 2022 - 06:43 UTC
• All services started responding again at 07:20 UTC
• All application servers operated normally
• Database servers operated normally
• API was reachable when contacting the server directly from within our VPN

Why this happened

We are protecting our API using Cloudflare's services. Cloudflare had an outage which caused requests to never reach our servers. Cloudflare posted a post-mortem here.

Estimated costs

• We were down for 1h 16 minutes

How to prevent this in the future

For longer-lasting outages of Cloudflare, we can failover the routing to a backup provider. For short outages, a failover will take too long (updating DNS records takes between a few minutes to several hours).
In general, Cloudflare is a highly reliable provider.