Tokyo Cabinet

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Tokyo Cabinet is an embedded key-value store written in C, with native support for C and C++ and wrapper APIs for other languages. Keys and values are NULL-terminated strings or arbitrary sequences of bytes, and generally have variable size. Tokyo Cabinet is not a relational database management system; It is a dedicated key-value store similar to LevelDB, RocksDB etc. An application uses a custom non-SQL API to invoke insert, delete, update operations on data and other management functions. In addition, it supports repeatedly appending to a value, characterized as a "concatenate" operation.

History

Tokyo Cabinet was developed in the late 2000s and improves upon older and simpler data storage libraries such as the Unix dbm ("database manager") and the GNU GDBM by providing a greater variety of backing data structures and additional API functions.