Possibly dumb/silly question.... Are there any sorts of reverse proxies out there that provide their own layer of jittered/exponential backoff based on patterns? (i.e. requesting IP, cookie, etc.)

I suppose the main reason I think it might be a bad idea, is that it would add complexity to the reverse proxy (i.e. now it's having to track whatever thing is being used and that complexity itself becomes a potential failure point...)

(To be clear, the clients should have their own backoff procedures, but I'm thinking about cases involving naughty clients, which are sometimes a harder problem to correct for...)