pub const UNKNOWN_ROUTE: &str = "unknown";Expand description
Label substituted when a request did not match any route template (axum’s built-in 404 fallback) or when the matched template is not on the configured allow-list.
Kept distinct from any real route template so dashboards can flag the
route="unknown" series as a sign that either a real route is missing
from DEFAULT_ROUTE_ALLOWLIST or that scanners are probing the
gateway.