Project Description
Lucandra.NET is a Lucene + Cassandra implementation written in C# which is based on the Lucandra (Java) project by Jake Luciani. Apache's Lucene is a high-performance full-text search engine, and Apache's Cassandra is a promising NoSQL database, originally developed by Facebook. Note: This page is currently under construction and I'm working on the documentation as much as I can as time permits. Not all source code is fully documented, but will be.
About Lucandra.NET
Lucandra.NET originally started off as a direct port of Jake Luciani's "Lucandra" project (https://github.com/tjake/Lucandra), driven by curiosity and the desire to learn a little bit more about the inner workings of Lucene and Cassandra. After completing the port from Java, I realized that this truly is a valid and promising replacement for the traditional file-based segment stores used by Lucene. We decided to use this in one of our production products, so since then I've gone through and re-written/re-factored a lot of the code and tried to squeeze the most out of it that I can in hopes that some other users of Lucene.NET would find it useful. Note that the code no longer directly represents the original Lucandra code as I've kind-of gone my own way with things; so there's a little learning curve if you're hoping on being able to walk into this code with familiarity of Lucandra's code (though some is still similar). Some things to keep in mind:
Lucandra.NET is built against Lucene.NET 2.9.2. Lucandra.NET is not compatible with Lucandra (Java). This is due to the fact that Lucandra.NET uses a different data model within Cassandra and also that Lucandra uses Java object serialization, which is for obvious reasons not compatible with .NET's serialization. In the current version, it is expected that you will use a ByteOrderedPartitioner as your partitioner in Cassandra. This facilitates wildcard & range queries, sorting, etc. Lucandra (Java) performs hashing on keys stored in Cassandra; Lucandra.NET does not currently do this. This is primarily due to the fact that I do not fully understand the inner-workings of the partitioners in Cassandra and until I have some time to really play with them and see the how the partitioning works across a cluster, this won't be implemented.
Lucandra.NET is a Lucene + Cassandra implementation written in C# which is based on the Lucandra (Java) project by Jake Luciani. Apache's Lucene is a high-performance full-text search engine, and Apache's Cassandra is a promising NoSQL database, originally developed by Facebook. Note: This page is currently under construction and I'm working on the documentation as much as I can as time permits. Not all source code is fully documented, but will be.
About Lucandra.NET
Lucandra.NET originally started off as a direct port of Jake Luciani's "Lucandra" project (https://github.com/tjake/Lucandra), driven by curiosity and the desire to learn a little bit more about the inner workings of Lucene and Cassandra. After completing the port from Java, I realized that this truly is a valid and promising replacement for the traditional file-based segment stores used by Lucene. We decided to use this in one of our production products, so since then I've gone through and re-written/re-factored a lot of the code and tried to squeeze the most out of it that I can in hopes that some other users of Lucene.NET would find it useful. Note that the code no longer directly represents the original Lucandra code as I've kind-of gone my own way with things; so there's a little learning curve if you're hoping on being able to walk into this code with familiarity of Lucandra's code (though some is still similar). Some things to keep in mind:
- Lucandra.NET is currently written for Cassandra 0.7-beta3 and Thrift-0.5.0 and will not work (without modification) with versions previous to Cassandra 0.7, and is untested with earlier 0.7 beta releases.
- You can download Cassandra at http://cassandra.apache.org/download/.
- You can download Thrift at http://thrift.apache.org/download/ (the correct C# thrift project for Cassandra 0.7-beta3 is included in the solution).
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