Function dynamic_relational_admit_rate_limited_request 

pub fn dynamic_relational_admit_rate_limited_request(
    app_root: &Path,
    runtime_conf_path: Option<&Path>,
    app_id: Option<&str>,
    policy_key: &str,
    bucket_key: &str,
    maximum: usize,
    window_seconds: u64,
) -> Result<bool, DatabaseError>

Admits one request through the configured relational rate-limit backend when available.