I developed DeclarativeCOS framework for declarative programming on COS.  So... We can talk about this too :)

I plan to use little lightweight http server which communicates with Telegram server.

Every action inside Telegram app generates event. The app sends every event to Telegram server.

Telegram server notifies my little lightweight http server about new events.

My server processes the events and do some certain action. For example, restart certain Cache instance.