replace_get_stale_while_revalidate_ns

fastly_sys::fastly_cache

Function replace_get_stale_while_revalidate_ns 

Source 
pub unsafe extern "C" fn replace_get_stale_while_revalidate_ns(
    handle: CacheReplaceHandle,
    duration_out: *mut CacheDurationNs,
) -> FastlyStatus