Research Rate Limiting

[benyanke]

trafficstars

Look into rate limiting options. Failed binds would be the most obvious metric to check, but potentially others could arise too. Probably on a per-host basis.

[Fusion]

I just checked in rate limiting for failed binds as this, indeed, seems like the most important one. We could, conceivably, add more rate limiting for everyday operations but at this time I am concerned about how exactly we would behave: would we reject the requests, at the risk of breaking the clients, or queue them and delay them, or a mix of both approaches based on resources usage?