improve caching and disable loading spinners for cached functions

app.py

@@ -12,7 +12,7 @@ from langchain import OpenAI
 from langchain import PromptTemplate
 
 
-@st.experimental_memo
+@st.experimental_singleton(show_spinner=False)
 def load_vectorstore():
     # download from hugging face
     snapshot_download(repo_id="calmgoose/orwell-1984_faiss-instructembeddings",
@@ -43,7 +43,7 @@ def load_vectorstore():
 
     return docsearch
 
-@st.experimental_memo
+@st.experimental_singleton(show_spinner=False)
 def load_chain():
 
     BOOK_NAME = "1984"
@@ -122,6 +122,10 @@ def get_text():
     return user_input
 
 user_input = get_text()
+
+# show question
+st.text(f"**You: {user_input}**")
+
 ask = st.button("Ask")
 
 if ask: