python - How to share session values created outside the context in Flask?

Question

How do I store something created by a thread, in a session, so I can access that value later in another request?

Here is a sample:

@app.route('/one')
def one():
    @copy_current_request_context
    def x():
        session['status'] = "done"      

    t = threading.Thread(target=x)
    t.start()
    return "One"



@app.route('/two')
def two():
    status = session['status']
    return "Two: {}".format(status)

In example above I store the 'status' from within the thread (I need to run the thread) inside the /one request but later, let's say 5s, I want to check for the status in another request (/two).

Also does @copy_current_request_context make a read-only (or read and discard write) copy of the session/request?

question from:https://stackoverflow.com/questions/66064183/how-to-share-session-values-created-outside-the-context-in-flask

Answer 1

The easiest and somehow best answer is using global variables that have been described completely Here.

But if your application is going to be scaled and you need this data to be shared with other instances, you might use "Redis" as a fast In-Memory DB. More details