Hello everyone, for this challenge activity, the Dash plugin based on hooks that I want to share is dash-offline-detect-plugin
Description: This plugin can quickly and easily add an application service liveness detection function to Dash applications (especially in the case of production environment deployment). Once the backend service of a Dash application that the user has opened cannot be connected, the Dash application with this plugin enabled will immediately display relevant prompt information on the front-end page. When the service is restored, the prompt information will be automatically removed.

Github: dash-offline-detect-plugin on Github
Pypi: dash-offline-detect-plugin on Pypi
Demo app:
import dash
from dash import html
# Import the offline detect plugin
from dash_offline_detect_plugin import setup_offline_detect_plugin
# Enable the offline detect plugin for the current app, default interval is 5000ms
setup_offline_detect_plugin()
app = dash.Dash(__name__)
app.layout = html.Div("Test App.", style={"padding": 50})
if __name__ == "__main__":
app.run()