We are currently experiencing degraded performances towards github.com services from our Paris infrastructure. We are investigating the issue. Tools relying on GitHub (composer, go, ...) might take longer than usual to fetch their dependencies or experience connections timeouts / instabilities.
EDIT 15:48 UTC: We are seeing improvements and the situation is currently back to normal. The root cause seemed to be a BGP announce change from GitHub's side that made our traffic go through suboptimal routes, leading to degraded performances. We keep monitoring the situation.
EDIT 16:30 UTC: The incident is fully resolved.