I am creating a Python FastAPI server which will be uploading data to Firebase Storage using pyrebase4.

Following is the code of how I will be initializing the Firebase instance (directly taken from pyrebase4 docs):

import pyrebase

config = {
  "apiKey": "apiKey",
  "authDomain": "projectId.firebaseapp.com",
  "databaseURL": "https://databaseName.firebaseio.com",
  "storageBucket": "projectId.appspot.com"
}

firebase = pyrebase.initialize_app(config)

Now how will I manage multiple instances of this firebase object?

Should I keep it’s instance as a global object? What is the best approach to handle this, considering that there will be multiple users trying to access routes concurrently.

Also, if I keep the instance at a global level, then it will be creating a new instance each time. Do I need to close the connection.

I am confused, could not find anything relevant in their docs. Please guide. Thanks.

If I use DI in FastAPI, and ‘inject’ this instance with a function handling a request and it’s uploading some data, and assume a new request comes in from another user, will the newer request have to wait till the first request completes?

def return_storage():
    print("I have been called")
    return firebase.storage()

@app.get("/test1")
async def testing_1(storage = Depends(return_storage)):
    storage.child("user1/video.mp4").put("video1.mp4")

@app.get("/test2")
async def testing_2(storage = Depends(return_storage)):
    storage.child("user2/video.mp4").put("video1.mp4")