From 6b45fab652a7ba1f455107f3f2971b773d0f6e81 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Philipp=20Kr=C3=BCger?= <philipp.krueger1@gmail.com>
Date: Mon, 21 Aug 2023 19:37:28 +0200
Subject: [PATCH] Add some perf improvment idea comments

---
 car-mirror/src/dag_walk.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/car-mirror/src/dag_walk.rs b/car-mirror/src/dag_walk.rs
index 707c617..2f9b3f0 100644
--- a/car-mirror/src/dag_walk.rs
+++ b/car-mirror/src/dag_walk.rs
@@ -72,6 +72,9 @@ impl DagWalk {
             }
         };
 
+        // TODO: Two opportunities for performance improvement:
+        // - skip Raw CIDs. They can't have further links (but needs adjustment to this function's return type)
+        // - run multiple `get_block` calls concurrently
         let block = store.get_block(&cid).await?;
         for ref_cid in references(cid, &block)? {
             if !self.visited.contains(&ref_cid) {