Aetherance commented on code in PR #3541:
URL: https://github.com/apache/kvrocks/pull/3541#discussion_r3702254847


##########
src/commands/cmd_key.cc:
##########
@@ -372,9 +374,17 @@ class CommandDel : public Commander {
     uint64_t cnt = 0;
     redis::Database redis(srv->storage, conn->GetNamespace());
 
-    auto s = redis.MDel(ctx, keys, &cnt);
+    const bool notify_del = GetAttributes()->name == "del" && 
conn->IsKeyspaceEventEnabled(kNotifyGeneric);
+    std::vector<rocksdb::Slice> deleted_keys;
+    if (notify_del) deleted_keys.reserve(keys.size());
+
+    auto s = redis.MDel(ctx, keys, &cnt, notify_del ? &deleted_keys : nullptr);
     if (!s.ok()) return {Status::RedisExecErr, s.ToString()};
 
+    for (const auto &key : deleted_keys) {
+      conn->AddKeyspaceEvent(kNotifyGeneric, "del", 
std::string_view(key.data(), key.size()));
+    }
+

Review Comment:
   Also, if this PR should be split into several smaller PRs, should I first 
refactor the current PR to use the context-based approach you suggested, and 
then split it? Or should I implement this approach only after the PR has been 
split?



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