[tor-bugs] #12538 [Tor]: A relay is automatically a dir cache
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Mon Jul 7 17:03:05 UTC 2014
#12538: A relay is automatically a dir cache
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Reporter: cypherpunks | Owner:
Type: enhancement | Status: new
Priority: normal | Milestone:
Component: Tor | Version: Tor: unspecified
Resolution: | Keywords: tor-relay
Actual Points: | Parent ID:
Points: |
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Comment (by nickm):
It's easier to have all relays be caches than to have all guards be
caches: until now, there is nothing in Tor (AFAIK) where a relay behaves
differently depending on any flag it has been assigned in any consensus.
If we say "be a dir cache if you're a guard", then we need to consider
cases where the client realizes that a relay is a guard before the relay
itself realizes, and so on.
(For one particularly hairy case: imagine that a negative feedback loop is
created, where the extra burden of being a directory cache lowers a
relay's visible bandwidth, so it is no longer a guard, so it loses the
guard flag, so its visible bandwidth increases, etc etc.)
So I think "all servers cache" is a better model than "all guards cache."
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/12538#comment:3>
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