File Synchronization across two different Browser sessions connected to Streamlit App

Using Streamlit
1

Can someone please tell how to do file synchronisation for two different Browser sessions connected to Streamlit App, My use case is My app allows users to upload/view the files , Now I don’t want both the users Saving the file at same time , Can we use some thread locks to ensure that it doesn’t happen using ctx.session_id

2

I tried the following thing , I found that streamlit is also using threading module , so I done the following in session_state

import streamlit.report_thread as ReportThread
from streamlit.server.server import Server
import threading


class SessionState(object):
    def __init__(self, **kwargs):
        for key, val in kwargs.items():
            setattr(self, key, val)


def get(**kwargs):

    ctx = ReportThread.get_report_ctx()
    current_server = Server.get_current()

    if not hasattr(current_server, 'my_state'):
        current_server.my_state = {}

    if not hasattr(current_server,'custom_lock'):
        current_server.custom_lock = threading.Lock()

    kwargs['lock'] = current_server.custom_lock
    if str(ctx.session_id) not in current_server.my_state.keys():
        current_server.my_state[str(ctx.session_id)] = SessionState(**kwargs)

    return current_server.my_state[str(ctx.session_id)]

So by this we get state.lock for every thread which is common to all threads and we can do state.lock.acquire() and state.lock.release() for synchronisation, is this proper way?