Clear cache on Streamlit

Streamlit

As I've mentioned several times here in my GitHub Pages, Streamlit (opens in a new tab) is my go-to tool to build an interactive dashboard. Unlike its competitors such as Plot.ly's Dash (opens in a new tab) or RStudio's Shiny (opens in a new tab), it doesn't require you to add any boilterplate codes for CSS.

Cache on Streamlit

Evidently, in data analytics, handling data is at the core no matter what your intention is. A lot of time, it involves handling huge size of data and therefore, being able to efficiently deal with it is advantageous for practitioners. That being said, Streamlit has feature to preload the data and allows app to run faster.

Reset cache

While it's good to have caching data, it often entails problems such as not being able to refresh to up-to-date data. You would have experienced your web brower loaded a web site using cached version not the up-to-date one.

So it's crucial to have a feature to reset data. Unfortunately, as of its current release (0.8.x), a buttton to clear cache on Streamlit has been removed.

So, no luck?

Does that mean we are out of luck to clear data cache at all? Of course not!

The following two lines of codes can reset cache and re-run the app with fresh data.

    st.caching.clear_cache()
    st.experiemental_rerun()

Above code assumes streamlit module has been loaded as st (import streamlit as st).