DBreeze

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C# .NET NOSQL ( key value, object store embedded TextSearch SemanticSearch Vector layer ) ACID multi-paradigm database management system.

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DBreeze ![Image of DBreeze](https://raw.githubusercontent.com/hhblaze/DBreeze/master/Documentation/Dbreeze.Logo.png) Database
=====================
![Image of Build](https://img.shields.io/badge/DBreeze%20build-1.138%20production-9933FF.svg) 
[![Image of Build](https://img.shields.io/badge/License-BSD%203,%20FOSS-FC0574.svg)](https://github.com/hhblaze/DBreeze/blob/master/LICENSE)
![Image of Build](https://img.shields.io/badge/Roadmap-completed-33CC33.svg)
[![NuGet Badge](https://img.shields.io/nuget/dt/DBreeze?color=blue&label=Nuget%20downloads)](https://www.nuget.org/packages/DBreeze/)
[![Image of Build](https://img.shields.io/badge/Powered%20by-tiesky.com-1883F5.svg)](https://tiesky.com)

DBreeze Database is a professional, open-source, multi-paradigm (embedded Key-Value store, objects, NoSql, text search, multi-parameter search, embedding vector database, vector similarity search / clustering etc.), 
multi-threaded, transactional and ACID-compliant data management system for
.NET5> / .NET Framework 3.5> / Xamarin MONO Android iOS / .NET Core 1.0> / .NET Standard 1.6>  / Universal Windows Platform / .NET Portable / UNITY 
/ [CoreRT](https://github.com/dotnet/corert)

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

- It's free software for those who believe 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 <a href = 'https://www.nuget.org/packages/DBreeze/'  target='_blank'>NuGet</a> since January 2014. 
- DBreeze for .NETCore, [CoreRT](https://github.com/dotnet/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 <a href = 'http://nosql-database.org'  target='_blank'>nosql-database.org</a>, <a href = 'https://github.com/thangchung/awesome-dotnet-core'  target='_blank'>Awesome .NET Core</a>, <a href = 'https://github.com/quozd/awesome-dotnet'  target='_blank'>awesome-dotnet</a>
- Read <a href = 'https://docs.google.com/document/pub?id=1r1l940w4Z5p_6ntEkMTkjCWwbOQtJNr40Pq8wqI6g4o'  target='_blank'>"Release notes"</a> document to get latest DBreeze news.

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

- <a href = 'https://github.com/hhblaze/DBreeze/wiki/Quick-start-guides'  target='_blank'>Quick start guides</a> 
- <a href = 'https://github.com/hhblaze/DBreeze/releases'  target='_blank'>Assemblies location</a> 
- <a href='https://github.com/hhblaze/DBreeze/raw/master/Documentation/_DBreeze.Documentation.actual.pdf' target="_blank">Documentation (PDF, actual)</a>
- <a href='https://docs.google.com/document/pub?id=1IFkXoX3Tc2zHNAQN9EmGSXZGbQabMrWmpmVxFsLxLsw' target="_blank">Documentation (HTML, actual)</a>
- <a href = 'https://github.com/hhblaze/DBreeze/blob/master/Documentation/LLM/DBreeze4LLM_003.md'  target='_blank'>LLM Agents Documentation (markdown, actual. 12K tokens)</a> 
- <a href = 'https://github.com/hhblaze/DBreeze/blob/master/Documentation/LLM/DBreeze4LLM_003_compressed.md'  target='_blank'>LLM Agents Documentation compressed (markdown, actual. 8.5K tokens)</a> 
- <a href='https://docs.google.com/document/pub?id=1VoBpzOENb24vF3ZQ10sxa0j-PAprKBGJ6uiGpEisxdM' target="_blank">Benchmark (HTML, actual)</a>
- <a href='https://docs.google.com/document/pub?id=1r1l940w4Z5p_6ntEkMTkjCWwbOQtJNr40Pq8wqI6g4o' target="_blank">Release notes</a>
- <a href='https://docs.google.com/document/pub?id=188hY76go8bB2tSyQYoN0NMIJbMEuCOxYXNKZs_sEcpo' target="_blank">DBreeze tuning advices</a>
- <a href='https://github.com/hhblaze/DBreeze/issues?utf8=%E2%9C%93&q=label%3Aquestion%20' target="_blank">Discussion on the forum </a>

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 (BLOB) 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 Vector Database Layer / Similarity Search Engine / Clustering, based on HNSW Graphs and TurboQuant vectors compression.
- Integrated binary and JSON serializer [Biser.NET](https://github.com/hhblaze/Biser)
- High Availability, Redundancy and Fault Tolerance via [Raft.NET](https://github.com/hhblaze/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.

All NuGet DLLs are digitally signed with anti-tampering protection.

hhblaze@gmail.com

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