Are there any good reference (open-source) Rails NoSQL apps?

Question

I'm interested in seeing how using NoSQL would affect the architecture/design/code of a Rails application.

Does anyone know of a good example of a open-source Rails app using NoSQL persistence?

Thanks

Answer 1

Take look at these projects:

• Cassandra usage at Digg.
• Cassandra usage at Twitter.
• Friendly usage at FetLife(nsfw).

Finally, MyNoSQL is a good site for NoSQL related information.

Answer 2

I doubt any of those guys will let us check out their code. ;) You may want to check through here http://www.opensourcerails.com/ , but I believe they all use some kind SQL.

Answer 3

Harmony is a Rails site that uses MongoDB. While it's not open source, it's co-creater, John Nunemaker, writes blog posts about how MongoDB is being used effectively in Harmony and often provides examples of code taken directly from the application. These posts appear on RailsTips and more recently on MongoTips. John is also the author of MongoMapper, an ActiveRecord-like library for MongoDB, so his writing is very informative and his code is about as close to doing things "the right way" as you're likely to find.

Answer 4

MySQL schema-less database at Friendfeed.

http://bret.appspot.com/entry/how-friendfeed-uses-mysql

Answer 5

Shapado is a rails project like stackoverflow using MongoDB. Great reference, go check it out.