Streamlit Cloud Storage Limit & Caches Management

[Vika]

Hi, I’ve already deployed one app in streamlit cloud and currently encountered error message, which I believe it’s related to storage limit after searching previous posts/blogs. As I’m a newbie to computer science and not very familiar with the concepts of storage/cache/session, I’d like to know:

1. What will be stored in streamlit app’s cache generally?

• My app’s data process is: user selection → connect to database and extract data based on user selection → process data (e.g., calculation, merge dataset etc.) → give user output that can be downloaded as csv

2. In addition to some code about cache provided in the blog, I also find that there’s a “clear cache” button in the app page (see screenshot below). I wonder is this button’s effect same for those cache management code? And will reboot the app clear caches?
   

[Goyo]

@Vika

What will be stored in streamlit app’s cache generally?

The return values of the decorated functions.

@Vika

there’s a “clear cache” button in the app page (see screenshot below). I wonder is this button’s effect same for those cache management code? And will reboot the app clear caches?

Yes and yes.

[Vika]

Thanks Goyo! If I want to clear cache each time the user completes analysis(csv downloaded/close the web page/select new user input etc.), where should I put a st.cache_resource.clear() in my code structure? My code structure is like this:

def main():
xxx (user select input & trigger st.button to start analysis)
xxx (connect to database & extract data according to user selection)
xxx (process data)
xxx (show the output & allow user to download output as csv)

if name == “main”:
main()

[Goyo]

@Vika

If I want to clear cache each time the user completes analysis(csv downloaded/close the web page/select new user input etc.), where should I put a st.cache_resource.clear()

At the point in your code where the user completes the analysis, which I cannot identify in your sample.