diff --git a/docker-compose.yml b/docker-compose.yml
index de0ad55..825cfac 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -38,3 +38,5 @@ services:
       - ./sg_data/mongodb:/data/db
     logging:
       driver: none
+    ports:
+      - "127.0.0.1:27017:27017"
diff --git a/searchgram/__init__.py b/searchgram/__init__.py
index ec35395..c2ba6f2 100644
--- a/searchgram/__init__.py
+++ b/searchgram/__init__.py
@@ -7,6 +7,8 @@
 from config import ENGINE
 
 if ENGINE == "meili":
+    print("Using MeiliSearch as search engine")
     from meili import SearchEngine
 elif ENGINE == "mongo":
+    print("Using MongoDB as search engine")
     from mongo import SearchEngine
diff --git a/searchgram/mongo.py b/searchgram/mongo.py
index 3fd136f..1322734 100644
--- a/searchgram/mongo.py
+++ b/searchgram/mongo.py
@@ -23,14 +23,16 @@ class SearchEngine(BasicSearchEngine):
     def __init__(self):
         self.client = pymongo.MongoClient(host=MONGO_HOST, connect=False, connectTimeoutMS=5000, serverSelectionTimeoutMS=5000)
         self.db = self.client["telegram"]
-        self.col = self.db["chat"]
-        self.history = self.db["history"]
+        self.chat = self.db["chat"]
 
     def __del__(self):
         self.client.close()
 
     def upsert(self, message):
-        pass
+        if self.check_ignore(message):
+            return
+        data = self.set_uid(message)
+        self.chat.update_one({"ID": data["ID"]}, {"$set": data}, upsert=True)
 
     def search(self, keyword, _type=None, user=None, page=1, mode=None):
         pass