[tor-bugs] #13804 [Tor]: Implement negative caching for HS descriptor

[Tor Bug Tracker & Wiki]

#13804: Implement negative caching for HS descriptor
-----------------------------+--------------------------
     Reporter:  dgoulet      |      Owner:
         Type:  enhancement  |     Status:  new
     Priority:  normal       |  Milestone:  Tor: 0.2.???
    Component:  Tor          |    Version:
   Resolution:               |   Keywords:  tor-hs
Actual Points:               |  Parent ID:
       Points:               |
-----------------------------+--------------------------
Changes (by special):

 * keywords:  tor-hss => tor-hs


Comment:

 To clarify:

 We're talking about HS **clients** caching negative responses from HSDir,
 to reduce the impact of repeated requests. Is that correct?

 This description confuses me, because a client doesn't need to worry about
 memory exhaustion. It will only get as many negative cache entries as it
 asks for. On the other hand, if this is about HSDirs, I don't see how a
 negative cache would be any different from what they do now.

 Assuming we are talking about clients, it's misleading to say that this is
 a caching change. If clients keep negative responses from HSDirs longer,
 we are changing behavior significantly.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13804#comment:1>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online