[OpenDHT-Users] OpenDHT storage question

[Sean Rhea]

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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