FoundationDB

FoundationDB is a free and open-source multi-model distributed NoSQL database developed by Apple Inc. with a shared-nothing architecture. The product was designed around a "core" database, with additional features supplied in "layers." The core database exposes an ordered key-value store with transactions. The transactions are able to read or write multiple keys stored on any machine in the cluster while fully supporting ACID properties. Transactions are used to implement a variety of data models via layers.
The FoundationDB Alpha program began in January 2012 and concluded on March 4, 2013 with their public Beta release. Their 1.0 version was released for general availability on August 20, 2013. On March 24, 2015 it was reported that Apple has acquired the company. A notice on the FoundationDB web site indicated that the company has "evolved" its mission and would no longer offer downloads of the software.
On April 19, 2018, Apple open sourced the software, releasing it under the Apache 2.0 license.
Main features.
The main features of FoundationDB included the following:
Design limitations.
The design of FoundationDB results in several limitations:
History.
FoundationDB, headquartered in Vienna, VA, was started in 2009 by Nick Lavezzo, Dave Rosenthal, and Dave Scherer, drawing on their experience in executive and technology roles at their previous company, Visual Sciences.
In March 2015 the FoundationDB Community site was updated to state that the company had changed directions and would no longer be offering downloads of its product. The company was acquired by Apple Inc., which was confirmed March 25, 2015.
On April 19, 2018, Apple open sourced the software, releasing it under the Apache 2.0 license.