UnQLite - Transactional Embedded NoSQL Database Engine

•    C

---

UnQLite is a in-process software library which implements a self-contained, serverless, zero-configuration, transactional NoSQL database engine. UnQLite is a document store database similar to MongoDB, Redis, CouchDB etc. as well a standard Key/Value store similar to BerkeleyDB, LevelDB, etc.

database embedded-database json-database document-store key-value-store json mobile-database transactional

upscaledb - A very fast lightweight embedded database engine with a built-in query language.

•    C++

---

upscaledb is a fast key-value database which optimizes storage and algorithms for your specific data types. upscaledb can be used to build all functions of a typical SQL database, tailored to the specific needs of your application, and directly linked into your program.

nosql database key-value-store key-value embedded-database

nessDB - A very fast transactional key-value, embedded database storage engine.

•    C

---

A very fast transactional key-value, embedded database storage engine.

key-value key-value-store database

Bolt - An embedded key/value database for Go.

•    Go

---

Bolt is a pure Go key/value store inspired by Howard Chu's LMDB project. The goal of the project is to provide a simple, fast, and reliable database for projects that don't require a full database server such as Postgres or MySQL.

cache key-value key-value-store

FoundationDB - Distributed, Transactional Key-value store

•    C++

---

FoundationDB is a distributed database designed to handle large volumes of structured data across clusters of commodity servers. It organizes data as an ordered key-value store and employs ACID transactions for all operations. It is especially well-suited for read/write workloads but also has excellent performance for write-intensive workloads. Users interact with the database using API language binding.

key-value-store transactional acid distributed-database key-value database multi-model

PumpkinDB - Event Sourcing Database Engine

•    Rust

---

PumpkinDB is a event sourcing database engine that doesn't overwrite data. It features include Immutable key/value storage, ACID transactions, Binary keys and values (allows any encoding to be used: JSON, XML, Protobuf, Cap'n Proto, etc.), An embedded programming language (PumpkinScript), A range of event indexing and querying primitives.

event-sourcing database key-value storage key-value-store concatenative

RocksDB - A persistent key-value store for fast storage environments

•    C++

---

RocksDB is an embeddable persistent key-value store for fast storage. RocksDB builds on LevelDB to be scalable to run on servers with many CPU cores, to efficiently use fast storage, to support IO-bound, in-memory and write-once workloads, and to be flexible to allow for innovation. It is especially suited for storing data on flash drives. It has multi-threaded compactions, making it specially suitable for storing multiple terabytes of data in a single database.

key-value-store flash-drive embedded-database database facebook

Slowpoke - Low-level key/value store in pure Go

•    Go

---

Package slowpoke is a simple key/value store written using Go's standard library only. Keys are stored in memory (with persistence), values stored on disk. Keys are stored in memory with persistence to disk. Values stored on disk only.

key-value engine persistence database embedded key-value-store

CodernityDB - Pure python, NoSQL, Fast Database

•    Python

---

CodernityDB is pure python (no 3rd party dependency), fast multi-platform, schema-less, NoSQL database. It has optional support for HTTP server version (CodernityDB-HTTP), and also Python client library (CodernityDB-PyClient) that aims to be 100% compatible with embeded version. It is an advanced key-value database, with multiple key-values indexes in the same engine. It has support for Multiple indexes, Custom storage, Sharding.

database embedded-database key-value-store nosql python-database

immudb - world’s fastest immutable database

•    Go

---

immudb is a database with built-in cryptographic proof and verification. It can track changes in sensitive data and the integrity of the history will be protected by the clients, without the need to trust the server. It can operate as a key-value store or as relational database (SQL).

immutable-database immutable database key-value verification immutability pci-dss cryptographic compliance merkle-tree gdpr sensitive-data regulations tamper-evident verifiable-data-structures auditable tamperproof

Berkeley DB - Embeddable Databases to Meet Your Needs

•    C

---

Oracle Berkeley DB provides the best open source embeddable databases allowing developers the choice of SQL, Key/Value, XML/XQuery or Java Object storage for their data model. At its core is a fast, scalable, transactional database engine with proven reliability and availability. Berkeley DB comes three versions: Berkeley DB, Berkeley DB Java Edition, and Berkeley DB XML.

database embedded-database key-value-store key-value

BuntDB - Embeddable, in-memory key/value database for Go with custom indexing and geospatial support

•    Go

---

BuntDB is a low-level, in-memory, key/value store in pure Go. It persists to disk, is ACID compliant, and uses locking for multiple readers and a single writer. It supports custom indexes and geospatial data. It's ideal for projects that need a dependable database and favor speed over data size.The desire to create BuntDB stems from the need for a new embeddable database for Tile38 and SummitDB.

database in-memory key-value geospatial key-value-store

BangDB - NoSQL for Real Time Performance

•    C++

---

Bangdb is pure vanilla key value nosql data store. The goal of bangdb is to be fast, reliable, robust, scalable and easy to use data store for various data management services required by applications. Bangdb comes in flavors like Embedded In memory, Network, Distributed data grid/ Elastic Cache. The bangdb is highly concurrent and runs parallel operations as much as possible.

database embedded-database key-value-store nosql distributed

rosedb - 🚀A fast, stable and embedded k-v database in pure Golang, supports string, list, hash, set, sorted set

•    Go

---

rosedb is a fast, stable and embedded key-value (k-v) database based on bitcask. Its on-disk files are organized as LSM trees, optimizing for write throughput. rosedb supports a variety of of data structures such as string, list, hash, set and sorted set. rosedb is written in pure Go. It is production-ready.

redis cli embedded database key-value data-structures throughput ttl kv-store rosedb support-expiration

pickleDB - Key-value store using Python's simplejson module

•    Python

---

pickleDB is a lightweight and simple key-value store. It is built upon Python's simplejson module and was inspired by redis.

key-value-store key-value cache python-database database

graviton - Graviton Database: ZFS for key-value stores.

•    Go

---

Graviton Database is simple, fast, versioned, authenticated, embeddable key-value store database in pure GOLANG. Graviton Database in short is like "ZFS for key-value stores" in which every write is tracked, versioned and authenticated with cryptographic proofs. Additionally it is possible to take snapshots of database. Also it is possible to use simple copy,rsync commands for database backup even during live updates without any possibilities of database corruption. Graviton is currently alpha software. Almost full unit test coverage and randomized black box testing are used to ensure database consistency and thread safety. The project already has 100% code coverage. A number of decisions such as change,rename APIs, handling errors, hashing algorithms etc. are being evaluated and open for improvements and suggestions.

Griddb - High performance, High scalability and High reliability database for big data

•    C++

---

GridDB is an In-Memory NoSQL Database for highly scalable IoT applications . It has a KVS (Key-Value Store)-type data model that is suitable for sensor data stored in a timeseries. It is a database that can be easily scaled-out according to the number of sensors. High Reliability It is equipped with a structure to spread out the replication of key value data among fellow nodes so that in the event of a node failure, automatic failover can be carried out in a matter of seconds by using the replication function of other nodes.

nosql key-value-store in-memory timeseries timeseries-database iot

TerarkDB - High performance database with the best compression

•    C++

---

TerarkDB is a core product of Terark. It is a RocksDB distribution that powered by Terark algorithms. with these algorithms, TerarkDB is able to store more data and access much faster than official RocksDB(3+X more data and 10+X faster) on same hardware.

database key-value-database key-value rocksdb embedded-database

SSDB - A fast NoSQL database, an alternative to Redis

•    C++

---

SSDB is a high performace key-value(key-string, key-zset, key-hashmap) NoSQL database, an alternative to Redis. SSDB is stable, production-ready and is widely used by many Internet companies including QIHU 360. Its feature include Redis client support, Persistent queue service, LevelDB support, Built in CLI and lot more.

ssdb nosql-databases leveldb nosql database key-value-store key-value redis-alternative

goleveldb - LevelDB key/value database in Go.

•    Go

---

This is an implementation of the LevelDB key/value database in the Go programming language.

database leveldb key-value-key-value-store