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Re: [tor-bugs] #6471 [Metrics Utilities]: Design file format and Python/Java library for multiple GeoIP or AS databases (was: Design file format and Python library for multiple GeoIP or AS databases)

#6471: Design file format and Python/Java library for multiple GeoIP or AS
databases
-------------------------------+--------------------------------------------
 Reporter:  karsten            |          Owner:  karsten     
     Type:  enhancement        |         Status:  needs_review
 Priority:  normal             |      Milestone:              
Component:  Metrics Utilities  |        Version:              
 Keywords:                     |         Parent:              
   Points:                     |   Actualpoints:              
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Changes (by karsten):

  * status:  assigned => needs_review


Comment:

 Replying to [comment:8 rransom]:
 > #2506 has a link to possibly-useful Python code.

 Maybe, yes.  Interesting discussion there!  The focus is somewhat
 different though.  I'd sacrifice compact representation of the data
 structure holding multiple GeoIP databases for better lookup speed.  We
 might store dozens of GeoIP databases in a single structure for metrics,
 and we'll do bulk lookups.  If that takes tens of MiB on disk and a
 multiple of that in RAM, but therefore finishes within a few minutes, not
 hours, I'm okay with that.

 So, I produced an [https://gitweb.torproject.org/karsten/metrics-
 tasks.git/shortlog/refs/heads/task-6471 initial version] of the multi-
 GeoIP database in Java.  The unit tests I wrote all succeed, but there
 might still be edge cases that break.  I'd much appreciate a review of the
 design, which is described in the comments.  If the design turns out to be
 good, we'll want a Python implementation of this Java thing.  (Such an
 implementation might benefit from the Python code in #2506.)

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/6471#comment:9>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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