From f6a5427d3aeca98f29e440dfa3cf299d75d4eb43 Mon Sep 17 00:00:00 2001
From: withchao <993506633@qq.com>
Date: Thu, 15 Jan 2026 10:54:38 +0800
Subject: [PATCH] fix: seq use $setOnInsert for min_seq in conversation update

(cherry picked from commit c27d33160f167a7d967f9d1cb74a6b48c5e44ca9)
---
 pkg/common/storage/database/mgo/seq_conversation.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkg/common/storage/database/mgo/seq_conversation.go b/pkg/common/storage/database/mgo/seq_conversation.go
index 7971b7e1a..b9eb6c2a9 100644
--- a/pkg/common/storage/database/mgo/seq_conversation.go
+++ b/pkg/common/storage/database/mgo/seq_conversation.go
@@ -57,8 +57,8 @@ func (s *seqConversationMongo) Malloc(ctx context.Context, conversationID string
 	}
 	filter := map[string]any{"conversation_id": conversationID}
 	update := map[string]any{
-		"$inc": map[string]any{"max_seq": size},
-		"$set": map[string]any{"min_seq": int64(0)},
+		"$inc":         map[string]any{"max_seq": size},
+		"$setOnInsert": map[string]any{"min_seq": int64(0)},
 	}
 	opt := options.FindOneAndUpdate().SetUpsert(true).SetReturnDocument(options.After).SetProjection(map[string]any{"_id": 0, "max_seq": 1})
 	lastSeq, err := mongoutil.FindOneAndUpdate[int64](ctx, s.coll, filter, update, opt)