From: Kaz Wesley <keziahw@gmail•com>
To: Gavin Andresen <gavinandresen@gmail•com>
Cc: Bitcoin Dev <bitcoin-development@lists•sourceforge.net>
Subject: Re: [Bitcoin-development] Squashing redundant tx data in blocks on the wire
Date: Thu, 17 Jul 2014 16:26:31 -0700 [thread overview]
Message-ID: <CA+iPb=E01qV8WMBs6o+UCVQ3iYL4nQdzBaG-ehcuhX47QPRPtA@mail.gmail.com> (raw)
In-Reply-To: <CABsx9T0ag_o_mu=5Q7Ju7s2hO3jz-o5g9FihE9h4B6+ednd2Pg@mail.gmail.com>
I'm moving this design document to a gist so that I can integrate
changes as they come up:
https://gist.github.com/kazcw/43c97d3924326beca87d
One thing that I think is an important improvement over my initial
idea is that the bloom filters don't need to be kept around and built
up, they can just be one-shot and clear any matching entries from the
set of known-knowns upon arrival -- provided a node is careful to
ensure the txes it wants to forget are known-known-known (which isn't
as bad as it sounds) to the peer it's telling it's forgetting them
when the forget-filter arrives.
On Thu, Jul 17, 2014 at 3:46 PM, Gavin Andresen <gavinandresen@gmail•com> wrote:
>
> A couple of half-baked thoughts:
>
> On Thu, Jul 17, 2014 at 5:35 PM, Kaz Wesley <keziahw@gmail•com> wrote:
>>
>> If there's support for this proposal, I can begin working on the specific
>> implementation details, such as the bloom filters, message format, and
>> capability advertisment, and draft a BIP once I have a concrete proposal for
>> what those would look like and a corresponding precise cost/benefit analysis.
>
>
> I'd encourage you to code up a prototype first (or at the same time), in whatever programming language / networking library you're most familiar with.
>
> Maybe not even using the existing p2p protocol; there could be a mining-only very-fast-block-propagation network separate from the existing p2p network.
>
> Combining your optimizations with "broadcast as many near-miss blocks as bandwidth will allow" on a mining backbone network should allow insanely fast propagation of most newly solved blocks.
>
> --
> --
> Gavin Andresen
Thanks Gavin, I am planning on working out the design details as I
work on a prototype. I have the beginnings of a previous shot at
implementing this in bitcoind to start from but my new design has some
important improvements to add to that.
-kaz
next prev parent reply other threads:[~2014-07-17 23:26 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-17 21:35 Kaz Wesley
2014-07-17 22:46 ` Gavin Andresen
2014-07-17 23:26 ` Kaz Wesley [this message]
2014-07-18 13:53 ` Jeff Garzik
2014-07-18 14:53 ` Gavin Andresen
2014-07-18 15:06 ` Jeff Garzik
2014-07-18 17:39 ` Kaz Wesley
2014-07-18 17:48 ` Jeff Garzik
2014-07-18 17:53 ` Kaz Wesley
2014-07-18 19:51 ` Kaz Wesley
2014-07-18 19:55 ` Jeff Garzik
2014-07-19 0:54 ` Emin Gün Sirer
2014-07-19 1:25 ` Gregory Maxwell
2014-07-19 3:06 ` Emin Gün Sirer
2014-07-19 6:48 ` Gregory Maxwell
2014-07-19 8:06 ` Wladimir
2014-07-17 23:34 ` Gregory Maxwell
[not found] ` <CABsx9T2PSa3MpfMMDCb8ACVF5vDOZOFLEK9zfP9PakgHA4U16w@mail.gmail.com>
[not found] ` <CAPkFh0vKFnKRE-sd-Z9t1zB73VLPsiaQ3o=OYgBqqtUE4_rTaw@mail.gmail.com>
2014-07-31 20:47 ` Kaz Wesley
2014-07-31 21:29 ` Gregory Maxwell
2014-07-31 21:41 ` Kaz Wesley
2014-07-31 21:51 ` Gregory Maxwell
2014-07-31 22:27 ` Kaz Wesley
2014-07-31 23:18 ` Gregory Maxwell
2014-08-01 1:00 ` Kaz Wesley
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