1.TerichDB

TerichDB is an open source NoSQL data store based on terark storage engine.

TerichDB is:

• Read optimized, faster than ever.
• Data is highly compressed and decompressed is not required before read.
• Use FSA and succinct technologies, totally different from B+ and LSM(Which is widely used in other data stores).
• Native support for regex expression query.
• Benchmark

2.Features

• High Compression Ratio
  • Higher than snappy(2~5 times) and other database products, higher than gzip, sometimes higher than bzip
• Search Directly on Compressed Data without Decompression
  • Compressed data as index, index as compressed data
• Fast Access
  • Optimized for SSD and in-memory workloads
• Flexible Indexing
  • Multiple indexes on one table
  • Unique/non-unique index
  • Composite index(one index on multiple columns)
  • Ordered index (support range query)
• Native regular expression query
• Embeddable & Standalone Database
• Persistent
• Schema Based, with Rich Data Types
• Column Group
• Supported Platforms: Linux, Windows, Mac
• Transparent foundation for developers to build customized products

3.Installation

3.1.Linux & MacOS

sudo wget https://raw.githubusercontent.com/Terark/terichdb/master/online_install.py && (python online_install.py; rm online_install.py)

3.2.Windows

windows installation guide

4.Compile TerichDB

4.1.Dependencies

• libboost_system.so(1.63.0) (boost_1_63_0)
• libboost_filesystem(1.63.0)(Could be found in boost_1_63_0)
• libwiredtiger.so(v2.8.0)
• libtbb.so(tbb44_20160128)
• libgflags
• libsnappy
• libz
• libzstd

4.2.Compiler Support

• Linux : g++-4.7, g++-4.8, g++-4.9, g++-5.3, g++-5.4, g++-6.1, g++-6.2
• Mac OS : g++-4.8, g++-4.9, g++-5.3, g++-6.0, g++-6.1, clang++-7.3
• Windows : vs2015

4.3.dfadb alternative

1. TerichDB is open source but our core data structures and algorithms(dfadb) are not yet.
2. dfadb is supported by a library named terark-fsa-* in our released packages.
3. Developers who want to build their own TerichDB, should place the terark-fsa-* library into their library search path(e.g. /usr/local/lib).
4. User compiled TerichDB can only uses limited APIs, and need to set "ReadonlySegmentClass" : "MockReadonlySegment" in dbmeta.json(TerichDB's schema file).

5. Notes

• UNIX fork() should not be called in the applications using TerichDB, this would cause undefined behaviors.

6.License

TerichDB follows Free Software Foundation's GNU AGPL v3.0

For commercial purposes, please contact us.