better-tires-shave.md

@gradio/client	gradio	gradio_client
minor	minor	minor

highlight:

Automatically delete state after user has disconnected from the webpage

Gradio now automatically deletes gr.State variables stored in the server's RAM when users close their browser tab. The deletion will happen 60 minutes after the server detected a disconnect from the user's browser. If the user connects again in that timeframe, their state will not be deleted.

Additionally, Gradio now includes a Blocks.unload() event, allowing you to run arbitrary cleanup functions when users disconnect (this does not have a 60 minute delay). You can think of the unload event as the opposite of the load event.

with gr.Blocks() as demo:
    gr.Markdown(
"""# State Cleanup Demo
🖼️ Images are saved in a user-specific directory and deleted when the users closes the page via demo.unload.
""")
    with gr.Row():
        with gr.Column(scale=1):
            with gr.Row():
                img = gr.Image(label="Generated Image", height=300, width=300)
            with gr.Row():
                gen = gr.Button(value="Generate")
            with gr.Row():
                history = gr.Gallery(label="Previous Generations", height=500, columns=10)
                state = gr.State(value=[], delete_callback=lambda v: print("STATE DELETED"))

    demo.load(generate_random_img, [state], [img, state, history]) 
    gen.click(generate_random_img, [state], [img, state, history])
    demo.unload(delete_directory)


demo.launch(auth=lambda user,pwd: True,
            auth_message="Enter any username and password to continue")