[erlang-questions] distributerl-0.1 (with improved Merkle trees)

Davies Liu davies.liu@REDACTED
Mon Sep 15 17:07:56 CEST 2008

I care about the Space-efficient of Merkle Tree, how many keys (with length
20 bytes) can been stored in 1G memory?

Thank you.

Best regards,
Davies Liu

On Mon, Sep 15, 2008 at 9:53 PM, Justin Sheehy <justin@REDACTED> wrote:

> Hello All,
> (erlang-questions is on the CC list because there was interest in this
> topic
> before and I do not know of a general announcement list for such things)
> This is the second release of distributerl. The first had no version
> number,
> and was mainly intended to get the code into the hands of other potential
> users and experimenters as quickly as possible -- motivated by requests for
> such code by projects including but not limited to the Kai project. The
> distributerl-0.1 release is driven by two improvements to the Merkle Tree
> module:
>   1. User-specified keys for objects are now arbitrary terms
>      instead of being restricted to 160b binaries.
>   2. A bug that caused incorrect diff/2 results has been fixed.
> Due to item #2, any systems making use of merkerl.erl should upgrade.
> A couple of smaller handy features were also added:
>   1. New function merkerl:delete/2 means that items can be
>      deleted from trees.
>   2. New function merkerl:allkeys/1 will return the keys for
>      all objects in a tree.
> (The vclock and chash modules are unchanged in this release)
> Future releases will include generic versioned objects, gossip protocol,
> and
> proper packaging of the modules.
> The project can be found at http://code.google.com/p/distributerl/
> If you have any thoughts or questions about this, just drop me a line.
> Cheers,
> -Justin
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> erlang-questions@REDACTED
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