[OpenDHT-Users] OpenDHT storage question

[Ahrenholz, Jeffrey M]

Sean,
Thanks for the response. We'll munge these values before using them as
keys.

I'm assuming the server pads the key value out to 160 bits when it
receives a shorter key?

-Jeff

> -----Original Message-----
> From: Sean Rhea [mailto:sean.c.rhea at gmail.com] 
> Sent: Friday, December 14, 2007 11:15 AM
> To: Ahrenholz, Jeffrey M
> Cc: opendht-users at opendht.org
> Subject: Re: [OpenDHT-Users] OpenDHT storage question
> 
> Jeff,
> 
> Yes, key-value pairs are partitioned across nodes by their key's
> prefixes.  If you want to balance the load from HIP-style keys (and
> you should), you need to reverse them and pad the tail up to 160 bits
> total.  I.e.:
> 
> Key = HASH | PREFIX | 32 bits of zeros
> 
> After that, it should work fine.
> 
> Cool application idea, by the way.
> 
> Sean
> 
> 
> 
> On Dec 14, 2007 10:33 AM, Ahrenholz, Jeffrey M
> <jeffrey.m.ahrenholz at boeing.com> wrote:
> > Hi, I've been working with the HIP protocol and have worked out some
> > extensions to store some HIP information (basically the 
> hash of a public
> > key and an address) into OpenDHT. This enables one type of 
> resolution
> > service for HIP...
> >
> > My question is, if I am storing several DHT records using a key that
> > looks like a fixed 28-bit prefix concatenated with 100-bits 
> of random
> > number, will the fixed prefix cause records to be stored on the same
> > server?
> >
> > (The prefix will always be the same, coming from RFC 4843; 
> key = 128-bit
> > HIT = (PREFIX | HASH) where "|" indicates concatenation)
> >
> > Apologies for my lack of understanding of the Bamboo DHT 
> software, and
> > if this is covered by a publication or on this mailing list :)
> >
> > thanks,
> > -Jeff
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> >
> 
> 
> 
> -- 
> "Humanity has advanced, when it has advanced, not because it has been
> sober, responsible, and cautious, but because it has been playful,
> rebellious, and immature." -- Tom Robbins
>