DBreeze Database is a professional, open-source, NoSql ( embedded Key-Value store ), transactional, ACID-compliant, multi-threaded, object database management system for .NET 3.5> / Xamarin MONO Android iOS / .NET Core / Universal Windows Platform / .NET Portable . Written in C#

• It's a free software for those, who think that it should be free.
• Since June 2012 is used in our own production environment.
• Follow the project, to be in touch with the recent optimizations and enhancements.
• DBreeze via NuGet since Januar 2014.
• DBreeze for .NETCore, UWP (Universal Windows Platform), .NET 4.5.1 grab via NuGet.
• Works on Linux, Windows, OS X. Via Xamarin on Android, iOS.
• DBreeze is listed in nosql-database.org
• Read "Changes in versions" document.

Its homepage is http://dbreeze.tiesky.com or http://dbreeze.codeplex.com

• Quick start guide. Customers and orders
• Assemblies location
• Documentation (PDF, actual)
• Documentation (HTML, actual)
• Benchmark (HTML, actual)
• Changes in versions
• DBreeze tuning advices
• Discussion on the forum

Key features:

• Fully managed code, platform independent and without reference to other libraries.
• ACID compliant.
• Multi-threaded, with a solution for deadlocks resolving/elimination, parallel reads and synchronized writes/reads.
• No fixed scheme for table names (construction and access on the fly).
• Tables can reside in mixed locations: different folders, hard drives, memory.
• Liana-Trie indexing technology. Database indexes (keys) never need to be defragmented. Speed of insert/update/remove operations doesn't grow up during the time.
• Ability to access Key/Value pair of a table by physical link, what can economize time for joining necessary data structures.
• No limits for database size (except "long" size for each table and physical resources constraints).
• Low memory and physical space consumption, also while random inserts and updates. Updates reside the same physical space, if possible.
• High performance of CRUD operations. When you need, unleash DBreeze power and get 500000 key/value pairs insert or 260K updates per second per core into sorted table on the hard drive of standard PC.
• High speed of random keys batch insert and updates (batch must be sorted in memory ascending and non-overwrite flag must be set).
• Range selects / Traversing (Forward, Backward, From/To, Skip, StartsWith etc). Remove keys, change keys.
• Keys and values, on the low level, are always byte arrays.
• Max. key size is 65KB, max. value size is 2GB. Value can be represented as a set of columns, where can be stored data types of fixed or dynamic length. Every dynamic datablock can be of size 2GB.
• Rich set of conversion functions from/to between byte[] and other data types.
• Nested / Fractal tables which can reside inside of master tables values.
• Incremental backup/restore option.
• Integrated text-search subsystem (full-text/partial).
• DBreeze is a foundation for complex data storage solutions (graph/neuro, object, document, text search etc. data layers). Please, study documentation to understand all abilities of DBreeze.

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