7 best C++ Key Value Database libraries in 2025

The C++ Key Value Database library is a set of classes and functions that allow you to access information stored in a Beryllium database using C++. It is compatible with many other key value databases. The use of C++ Key Value Database libraries like simDB, NuDB, keyvi is a very common practice nowadays. These libraries are used to store and retrieve data from a database in an easy manner. They also help in saving time and resources in development as well as maintenance of the application. KEYVIBASE is a key value store, key-value store and cache for C++ that supports both read and write. It can be used as an alternative to std::vector or boost::shared_ptr. KEYVIBASE provides an easy way to manage multiple values in memory, typically as a cache. NuDB is a lightweight database library written in C++11 with SQLite3 backend that aims at being fast, portable and easy to use. The library provides simple access to SQLite3 databases via DBI interface; full support for transactions; efficient indexing; fast random access; transaction isolation level read/write switches; full Unicode support; etc... Popular open source C++ Key Value Database libraries for developers include