Update app.py

app.py

@@ -15,9 +15,15 @@ embedding_function = HuggingFaceEmbeddings(model_name="all-MiniLM-L6-v2")
 loader = JSONLoader(file_path="games.json", jq_schema=".games[]", text_content=False)
 documents = loader.load()
 
-vectordb = Chroma.from_documents(documents, embedding_function)
+persist_directory = "./chroma_langchain_db"
+vectordb = Chroma.from_documents(documents, embedding_function, persist_directory=persist_directory)
 
-retriever = vectordb.as_retriever(
+vectordb_loaded = Chroma(
+    persist_directory=persist_directory,
+    embedding_function=embedding_function
+)
+
+retriever = vectordb_loaded.as_retriever(
     search_type="mmr",
     search_kwargs={'k': 300, 'fetch_k': 500}
 )