MySQL - World's most popular open source database

•    C++

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The MySQL database is the world's most popular open source database because of its consistent fast performance, high reliability and ease of use. It is used by individual Web developers as well as many of the world's largest and fastest-growing organizations to save time and money powering their high-volume Web sites.

database relational-database cluster storage-engine

Kylin - Extreme OLAP Engine for Big Data

•    Java

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Apache Kylin is an open source Distributed Analytics Engine designed to provide SQL interface and multi-dimensional analysis (OLAP) on Hadoop supporting extremely large datasets, original contributed from eBay Inc. It is designed to reduce query latency on Hadoop for 10+ billions of rows of data. It offers ANSI SQL on Hadoop and supports most ANSI SQL query functions.

etl olap olap-engine metadata-engine query-engine storage-engine

redux-storage - Persistence layer for redux with flexible backends

•    Javascript

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Save and load the Redux state with ease. And you need to install at least one redux-storage-engine, as redux-storage is only the "management core".

react redux storage database storage-engine immutablejs redux-middleware fsa flux-standard-action flux immutable persistent data localstorage

TileDB - TileDB array data management

•    C++

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Array data management made fast and easy. TileDB allows you to manage the massive dense and sparse multi-dimensional array data that frequently arise in many important scientific applications.

tiledb arrays storage-engine scientific-computing data-analysis hdfs s3 s3-storage

nitro - A high performance in-memory index storage engine

•    Go

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A high performance in-memory key-value item storage engine written in golang. The storage engine is based lock-free data structures and scales well with multicore CPUs.

key-value storage-engine embedded in-memory cache

libmdbx - Really fast and compact memory-mapped key-value storage engine based on B+Tree

•    C

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MDBX is compact, fast, powerful, and robust and implements a simplified variant of the BerkeleyDB API. In fact libmdbx is revised and extended descendant of Lightning Memory-Mapped Database (aka LMDB). Permissive non-copyleft BSD-style OpenLDAP Public License 2.8. Русскоязычная версия этого README здесь. libmdbx is superior to LMDB in terms of features and reliability, not inferior in performance. In comparison to LMDB, libmdbx makes many things just work perfectly, not silently and catastrophically break down. libmdbx supports Linux, Windows, MacOS, FreeBSD and other systems compliant with POSIX.1-2008.

nosql storage-engine performance lmdb mdbx mvcc key-value

imstor - A Golang image storage engine

•    Go

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A Golang image storage engine. Used to create and store different sizes/thumbnails of user uploaded images.Imstor enables you to create copies (or thumbnails) of your images and stores them along with the original image on your filesystem. The image and its copies are stored in a file structure based on the (zero-prefixed, decimal) CRC 64 checksum of the original image. The last 2 characters of the checksum are used as the lvl 1 directory name.

image-storage-engine storage-engine image-store

OpensoftStorageBundle - A bundle for tracking stored files across local and cloud based storages

•    Javascript

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Your application then has access to a storage_manager service which handles most of these use cases for storing new files into the storage engine.

bundle symfony symfony-bundle file file-manager file-storage storage-engine storage gaufrette

HaloDB - A fast key-value storage engine.

•    Java

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A fast, embedded, persistent key-value storage engine.

storage-engine embedded-database

Tupl - The Unnamed Persistence Library

•    Java

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The Unnamed Persistence Library.

database concurrency acid nosql transaction transactions cursor durable persistence replication raft sorting storage-engine key-value-store transactional

libfpta - Ultra fast, compact, Embedded Database for tabular and semistructured data.

•    C++

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Fast Positive Tables, aka "Позитивные Таблицы" by Positive Technologies -- Ultra fast, compact, embedded database for tabular and semistructured data: multiprocessing with zero-overhead, full ACID semantics with MVCC, variety of indexes, saturation, sequences and much more. The Future will (be) Positive. Всё будет хорошо.

nosql storage-engine performance fpta perfomance mvcc semistructured-data embedded-database acid libmdbx