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Scalaris

Scalaris

Scalaris is an open source scalable, transactional, distributed, and fault-tolerant key-value store. It was the first NoSQL database that supported the ACID properties for multi-key transactions.

It has strong data consistency for online databases and for building scalable Web 2.0 services.

Scalaris uses a structured overlay with a non-blocking Paxos commit protocol for transaction processing with strong consistency over replicas. Scalaris is implemented in Erlang.

 Scalaris 0.5.0

Price
Free to download

Size
16.2MB
License

Apache License Version 2.0

Developer
Thorsten Schütt, Florian Schintke, Alexander Reinefeld, Nico Kruber, Konrad-Zuse-Zentrum, and others

Website
code.google.com/p/scalaris

System Requirements
Erlang R13B01 or higher

Optional:
Java-API, CLI, Java 5 or higher, Ant
Python-API, CLI, Python 2.6 or higher
Ruby-API, CL: Ruby 1.8 or higher
Storage on disk: Tokyocabinet, toke

Support Sites:
Users and Developers Guide, FAQ, Mailing List

Selected Reviews:

Features include:

  • Support of fast transactions on distributed hash tables (DHTs)
  • Structured overlay network with logarithmic routing performance builds the basis for a multi-dimensional key/value store. In contrast to many other DHTs, our overlay stores the keys in lexicographical order, hence range queries are possible
  • Middle layer implements the ACID properties (atomicity, concurrency, isolation, durability) in the face of concurrent write operations. It uses an improved Paxos Commit protocol with a low communication overhead that has been optimally integrated into the overlay
  • Top layer hosts the application, a distributed key/value store. This layer can be used as a scalable, fault-tolerant backend for online services like shopping, banking, data sharing, online gaming, or social networks

Return to Key Value Stores Home Page

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Last Updated Sunday, April 14 2013 @ 09:35 AM EDT


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