How to clear the cache with each run

[ssimontacchi]

First off, Streamlit is awesome.

I am making an app where every time you push a button the state changes, but I would like to clear the cache the first time the script is run. So every time the page is refreshed, the cache is cleared.

Thanks for your help!

[arraydude]

Hey @ssimontacchi , thanks for using Streamlit !

It seems that your needing is related with this issue

Let us know if this helps you

[ssimontacchi]

Thanks! My issue is that wherever I seem to put it in my code, it clears the state every time a button is pressed or slider is moved. Do you know what I am doing wrong?

[arraydude]

Do you have a minimal example with the problem ? so I can help you with

With cache you refer to this streamlit function ? https://streamlit.io/docs/api.html#streamlit.cache or are you referring to the current app state ? if so could be related to this

[ssimontacchi]

Sure, if I implement this code block it shows the conundrum. Again, I'm looking to keep the state and only clear it with a refresh of the page. I get the same issue if I wrap the button in a function. Thanks!

import streamlit as st
from streamlit import caching

caching.clear_cache()

@st.cache(allow_output_mutation=True)
def get_state():
  return []

state = get_state()
state.append(len(state))
st.write(state)
st.button('Rerun')

[ssimontacchi]

Is there a way to count how many times the report has been run since the last time the cache was cleared?

[ssimontacchi]

I just added a reset button... Good enough for me! :)

[ssimontacchi]

The app's flow just isn't quite right without an autoreset. Any advice would be awesome!

[jrhone]

Hey @ssimontacchi ,

You could use the unofficial SessionState to store your data. It gets reset on a page refresh.

https://discuss.streamlit.io/t/preserving-state-across-sidebar-pages/107/2?u=jonathan_rhone

https://gist.github.com/tvst/036da038ab3e999a64497f42de966a92

[starrabb1t]

Hi, how to clear the cache for a specific session?? Is there any hack to do it?

[arraydude]

Hi, how to clear the cache for a specific session?? Is there any hack to do it?

Hi @starrabb1t , maybe this thread helps you, if not please open a new discussion here with your use-case