Distributed NoSQL database for Raspberry Pi with sharding and replication?

Question

I am looking for a database with the following features:

• Runs on Raspberry Pi
• NoSQL (Key-Value-Store)
• Transaction support
• Distributed
• Supports sharding
• Supports automatically managed data redundancy across several nodes so that single nodes may join and leave, similar as in a P2P network

Basically, Redis would be exactly what I want - but Redis runs completely in-memory which is a massive drawback on the Raspberry Pi.

Any other ideas?

PS: A P2P network or a distributed file system with the given characteristics is fine for me as well.

Answer 1

SQLite should be considered too, if you ever liked SQL. Libraries are available for most of the languages and it's really easy to model your data for it.

Answer 2

Apache Cassandra will work on the Raspberry Pi quite nicely. It should fill the bill of what you want to do. I've been experimenting with it on my blog, go here to see my results and setup information on my blog

However I noted you stated "transaction support" - are you sure of that?

Few NOSQL databases offer transaction support, although FoundationDB is one. It has all the features you requested with the exception of running on a Raspberry Pi, as it requires 64-bit.