I did not even know noStrudel did caching! Thanks for letting me know.
Discussion
It does not proactively cache events but you can set it up to use the nostr relay on your start9 server as a cache
Nice, does it than basically mirror all notes you have viewed from the relays you are connected to? Does it do this in the background as well or only when a client uses the webapp?
It mirrors all the events you see. Its an alternative option to caching events in the browser storage
it replaces the web browser cache, which is limited to 10k events, it can store infinity events, and you can run any relay as you prefer, i was testing it on replicatr
the only events that stay in browser memory are the ones that are part of a current render