File system based B+ Tree implementation in c#

Question

Is there any file system based B+ Tree implementation in c#(open source). I have found some projects, but those are not file(disk) based implementation. I am specifically looking for file system based B+ Trees.

Answer 1

Update:

I've added some benchmarks of managed B-Tree implementations for your enjoyment if you looking into this sort of thing.

BplusDotNet "... is known to be somewhat buggy on deletes"

I found just the opposite to be true, RaptorDB 1.6 was corrupting state and BplusDotNet 1.0.2082.16942 seemed to work well enough.

Original:

For completeness I'm going to add my own implementation here.

• Introduction - http://csharptest.net/?page_id=563
• Benchmarks - http://csharptest.net/?p=586
• Online Help - http://help.csharptest.net/
• Source Code - http://code.google.com/p/csharptest-net/
• Downloads - http://code.google.com/p/csharptest-net/downloads
• NuGet Package - http://nuget.org/List/Packages/CSharpTest.Net.BPlusTree

Answer 2

http://bplusdotnet.sourceforge.net/ but this one is known to be somewhat buggy on deletes.

Another one that appears to work well:

http://www.codeproject.com/KB/database/RaptorDB.aspx

RaptorDB allows you to store key/values either indexed using a b+ tree or a hash index. You can pick when you create the files.