Re: [ANN] prevalence-nodejs

Exciting! I've been thinking about getting into Node, and was just last 
night wondering if it would be able to support something Prevayler-like. 
Thanks so much for doing this.

William

On 02/20/2013 05:45 AM, Karl Wettin wrote:
> I've implemented a prevalence layer for Node.js:
>
> <https://github.com/karlwettin/prevalence-nodejs>
>
> This is version 0.1-SNAPSHOT and is the first thing I've ever written
> for Node.js so be aware, most probably here be dragons!
>
> Requirements:
>
> The serializer use JSON-REF which allows for circular references, but
> due to missing license information in the implementation I've found
> you'll have to compile <https://github.com/jdknezek/json-ref> to
> Javascript and save it as json-ref.js in the same directory as
> Prevalene.js. I've emailed the author and asked for permission to
> merge the code with function JsonRefSerializer.
>
> {{{
> sudo apt-get install coffeescript
> git clone https://github.com/jdknezek/json-ref.git
> coffee -c json-ref/lib/json-ref.coffee
> cp json-ref/lib/json-ref.js PREVALANCE_HOME
> }}}
>
> Caveats:
>
> * Prevalance base and aggregates must only contain plain field data.
> Any function, proto, etc will be lost in time. This is due to snapshot
> serialization, i.e. it works fine if you never take a snapshot and
> purely live out of the transaction journals.
>
> * It's not possible to scale applications (i.e. running multiple
> instances of Node.js that use the same prevalent system) since the IO
> lack locking mechanism and a way to report back to other instances
> that some transaction has been executed.
>
> It would be nice to solve these problems. I've got a few ideas and
> might just do something about it in the future.
>
>
>
>
>                  karl
>
> ------------------------------------------------------------------------------
> Everyone hates slow websites. So do we.
> Make your web apps faster with AppDynamics
> Download AppDynamics Lite for free today:
> http://p.sf.net/sfu/appdyn_d2d_feb
> _______________________________________________
> To unsubscribe go to the end of this page: http://lists.sourceforge.net/lists/listinfo/prevayler-discussion
> _______________________________________________
> "Databases in Memoriam" -- http://www.prevayler.org


------------------------------------------------------------------------------
Everyone hates slow websites. So do we.
Make your web apps faster with AppDynamics
Download AppDynamics Lite for free today:
http://p.sf.net/sfu/appdyn_d2d_feb
_______________________________________________
To unsubscribe go to the end of this page: http://lists.sourceforge.net/lists/listinfo/prevayler-discussion
_______________________________________________
"Databases in Memoriam" -- http://www.prevayler.org