内存优化，优化随着更新ccr文件增多，内存增长的情况

src/rtr/cache/ordering.rs

@@ -150,6 +150,24 @@ pub fn validate_payload_updates_for_rtr(
     Ok(())
 }
 
+pub fn validate_payload_update_refs_for_rtr(
+    updates: &[(bool, &Payload)],
+) -> Result<(), OrderingViolation> {
+    for (index, pair) in updates.windows(2).enumerate() {
+        if compare_payload_update_for_rtr(pair[0].1, pair[0].0, pair[1].1, pair[1].0)
+            == Ordering::Greater
+        {
+            return Err(OrderingViolation::new_update(
+                index,
+                (pair[0].0, pair[0].1),
+                (pair[1].0, pair[1].1),
+            ));
+        }
+    }
+
+    Ok(())
+}
+
 fn router_key_key(rk: &RouterKey) -> RouterKeyKey {
     RouterKeyKey::Key {
         ski: rk.ski(),