Programming language: C#
Tags: Database    
Latest version: v1.095

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DBreeze Image of DBreeze Database

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DBreeze Database is a professional, open-source, multi-paradigm (embedded Key-Value store, objects, NoSql, text search, multi-parameter search etc.), multi-threaded, transactional and ACID-compliant data management system for .NET 3.5> / Xamarin MONO Android iOS / .NET Core 1.0> / .NET Standard 1.6> / Universal Windows Platform / .NET Portable / CoreRT

...for servers, desktops, mobiles and internet-of-things... Made with C#

  • It's a free software for those who think that it should be free.
  • It has been used in our own production environment since June 2012.
  • Follow the project, to be in touch with the recent optimizations and enhancements.
  • DBreeze via NuGet since January 2014.
  • DBreeze for .NETCore, CoreRT, .NET Standard / UWP (Universal Windows Platform), .NET Framework grab via NuGet.
  • Works on Linux, Windows, OS X. Via Xamarin on Android, iOS.
  • DBreeze is listed in nosql-database.org, Awesome .NET Core, awesome-dotnet
  • Read "Release notes" document to get latest DBreeze news.

Its homepage is http://dbreeze.tiesky.com or https://github.com/hhblaze/DBreeze

  • Quick start guides
  • Assemblies location
  • Documentation (PDF, actual)
  • Documentation (HTML, actual)
  • Benchmark (HTML, actual)
  • Release notes
  • DBreeze tuning advices
  • Discussion on the forum

Key features:

  • Embedded .NET family assembly, platform independent and without references to other libraries.
  • Multi-threaded, ACID compliant, 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, in-memory with disk persistence.
  • Liana-Trie indexing technology. Database indexes (keys) never need to be defragmented. Speed of insert/update/remove operations doesn't change during the time.
  • Ability to access Key/Value pair of a table by physical link, that 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, when possible or configured.
  • 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 (benchmark in year 2012).
  • High speed of random keys batch inserts and updates (update mode is selectable).
  • 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).
  • Integrated object database layer.
  • Fast multi-parameter search subsystem with powerful query possibilities.
  • Integrated binary and JSON serializer Biser.NET
  • High Availability, Redundancy and Fault Tolerance via Raft.NET
  • 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.


*Note that all licence references and agreements mentioned in the DBreeze README section above are relevant to that project's source code only.