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Stone: Dead-Simple Ruby Data Persistence

By Peter Cooper / April 20, 2008


Stone is a new Ruby library developed by Nick DeMonner that seems to have got a nice bit of buzz in the last week. It's a data persistence library that provides "plug and play data persistence for any application or framework," and it boasts speed and simplicity. Rather than use a database and an ORM like ActiveRecord, Stone takes care of everything in an abstract manner. Data is "persisted" to files within a directory underneath your app.

The official Stone homepage gives some interesting examples, including replacing ActiveRecord with Stone in a Rails application. It is surprisingly simple, but by its own admission Stone is "extremely immature." It certainly looks well developed though, but if you're already happy with SQLite 3 and ActiveRecord (a surprisingly proficient combination) there might not be any compelling reasons to switch just yet.


  1. Nick C says:

    The concept reminds of Prevayler in Java - persisting/marshalling object graphs to the HDD (and cached in memory). I seem to remember that project proving controversial back when it was released (2004?)...

  2. Anonymous Coward says:

    Nick's great work aside, can we all agree that "dead-simple", as a phrase, is overused and done, especially when it comes to anything Ruby?


    I'm hoping the marketing and business school folks will adopt it so that developers will shun it forever.

  3. Garth says:

    Maybe 'Super-Easy' Ruby data Persistence instead ?

  4. Bob Aman says:

    Perhaps no compelling reason... unless, like me, you really hate ActiveSupport and by extension, ActiveRecord.

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