Gitlab Switches to CloudFlare
status.gitlab.com
status.gitlab.com
This is a planned maintenance operation, and they've likely picked 4am Pacific Time on a Saturday in order to reduce impact to their user base.
That said, it appears CloudFlare is increasingly becoming an essential element of (US?) web infrastructure, and given that they provide many tools (including, for example, those mentioned on the status page) which are proprietary, there seems to be a risk of monoculture and lock-in developing.
Edit: add second paragraph, to note this is planned maintenance