Tkrzw

Tkrzw is a library of routines for managing key–value databases. Tokyo Cabinet was sponsored by the Japanese social networking site Mixi, and was a multithreaded embedded database manager and was announced by its authors as "a modern implementation of DBM".^[1] Kyoto Cabinet is the designated successor of Tokyo Cabinet,^[1] while Tkrzw is a recommended successor of Kyoto Cabinet.

Tkrzw
Original author(s)	Mikio Hirabayashi
Developer(s)	Google
Initial release	July 11, 2020; 5 years ago (2020-07-11)
Stable release	1.0.32 / October 22, 2024; 9 months ago (2024-10-22)
Repository	github.com/estraier/tkrzw
Written in	C++
Type	Database engine, library
License	Apache 2.0
Website	dbmx.net/tkrzw/

Kyoto Cabinet
Original author(s)	Mikio Hirabayashi
Developer(s)	FAL Labs
Initial release	December 25, 2009; 15 years ago (2009-12-25)
Stable release	1.2.80 / April 14, 2023; 2 years ago (2023-04-14)
Repository	dbmx.net/kyotocabinet
Written in	C++
Type	Database engine, library
License	GPL 3
Website	dbmx.net/kyotocabinet

Tokyo Cabinet
Original author(s)	Mikio Hirabayashi
Developer(s)	FAL Labs
Initial release	2006; 19 years ago (2006)
Stable release	1.4.48 / August 10, 2012; 13 years ago (2012-08-10)
Repository	dbmx.net/tokyocabinet
Written in	C
Type	Database engine, library
License	LGPL 2.1
Website	dbmx.net/tokyocabinet

Tokyo Cabinet features on-disk B+ trees and hash tables for key-value storage, with "some" support for transactions.^[2]

See also

• Free and open-source software portal

• Ordered Key-Value Store