From: Sean O'Halpin <sean.ohalpin@...>
Date: 2008-05-10T10:23:37+09:00
Subject: Re: Persistent Hash

On Fri, May 9, 2008 at 10:22 PM, Kyle Schmitt <kyleaschmitt@gmail.com> wrote:
> I'm looking for some sort of persistent hash, or object store for ruby.

I quite like fsdb - http://redshift.sourceforge.net/fsdb/. It persists
data in the filesystem, is multi-thread and multi-process safe (as far
as flock is safe) and works nicely with yaml.

From the docs:

  require 'fsdb'

  db = FSDB::Database.new('/tmp/my-data')

  db['recent-movies/myself'] = ["LOTR II", "Austin Powers"]
  puts db['recent-movies/myself'][0]              # ==> "LOTR II"

  db.edit 'recent-movies/myself' do |list|
    list << "A la recherche du temps perdu"
  end

Not sure if it hasn't been updated because it's stable or because
development has stopped. I used it for a note-taking application which
I had running for a couple of years. Never had a problem with it
(though I wasn't exactly stressing it).

Regards,
Sean