Riak

Main products

All versions of Riak are now entirely open-source and free, and include the extra features that Basho charged license fees for.

Basho operated a freemium model, wherein they provided free versions of Riak in the form of Riak Core, Riak KV, Riak CS and Riak TS but made their money from licensing more advanced features and SLA-based support. The extra features from the Enterprise Editions have since been integrated into the open source version of Riak KV, as of Riak KV release 2.2.6. and Riak CS 2.1.2

Riak Core and Riak Core Lite

Riak Core

riak_core is the distributed systems framework that underpins Riak, forming the foundation for all Riak versions. It is being maintained as part of Riak.

Riak Core Lite

riak_core_lite is intended for general use as a base for creating distributed systems.

Riak KV (Key-Value)

Riak KV is a distributed NoSQL database designed to deliver maximum data availability by distributing data across multiple servers, meaning that if one client can reach one server, it should be able to read and write data. KV went through a few names in its lifetime, starting as Riak then Riak DS (for Data Store) and finally Riak KV (for Key-Value).

When Basho Technologies went into receivership in 2017 KV development was picked up by the open source community and has continued into 2021, with 2.2.6 released in 2018 being the first community release of KV. This release integrated some features that were originally restricted to Basho's Enterprise versions of Riak.

Version 2.9.0 was the first major community release by the open source community, releasing in November 2019, with version 3.0.1 following on August 20, 2020. Development has continued since then with the latest release being version 3.0.7.

Removed features

The current version of Riak no longer supports some features in the Enterprise edition of Riak, including:

• SNMP/JMX support

Separated features in Riak KV 3.0+

The following features of Riak KV 2.x have been removed by default from the Riak build. Specific builds including these features are available.

• Yokozuna

Riak CS (Cloud Storage)

Originally known as Riak Moss(Riak Multi-tenant Object Storage System - MOSS) but named as Riak CS (Cloud Storage) when released, Riak CS was first publicly released in January 2012.

Riak CS (Cloud Storage) is object storage software built on top of Riak KV, Riak's distributed database. Riak CS is designed to provide simple, highly-available, distributed cloud storage at any scale, and can be used to build cloud architectures or as storage infrastructure for heavy-duty applications and services.

Riak CS also includes an application called Stanchion which is used to manage the serialization of requests. This enables Riak CS to manage globally unique entities like users and bucket names. Serialization in this context means that the entire cluster agrees upon a single value for any globally unique entity at any given time; when that value is changed, the new value must be recognized throughout the entire cluster.

Riak CS was briefly rebranded as Riak S2 to make it more obviously compatible with Amazon S3 but the name did not catch on and it reverted to Riak CS.

In 2021 development for Riak CS was resumed with contributions from TI Tokyo.

Riak TS (Time Series)

Riak TS is an extension to Riak KV optimized for time series data, in that:

• it supports structured data, with table definition (with a CREATE TABLE call) required before data can be written;
• data slices from contiguous regions in its primary index (“quanta”) are stored on the same partition;
• CRUD operations are optimized for speed, at the expense of consistency.

A limited subset of SQL commands was implemented in Riak TS. There is no provision for consistency guarantees between tables (no foreign indexes). In SELECT statements, WHERE clause is supported but HAVING is not. ORDER BY was to appear in a version that was never released.

Riak TS existed as a collection of branches (in separate components of Riak KV such as riak_kv, riak_pb, etc.) and not as product with a repository of its own. It was developed by a dedicated team consisting of Gordon Guthrie (leader), Andy Till and Andrei Zavada, with occasional contributions from other developers.

Riak TS was conceived, along with Riak Data Platform project, as an attempt to diversify Basho's product line, an undertaking many insiders regard as misguided and eventually contributing to Basho's demise.

Licensing and support

Riak was originally licensed using a freemium model: open source versions of Riak KV, Riak CS and Riak TS are available, but end users can pay for additional features and support. However, since Basho entered receivership and bet365 (purchasers of all IP) made all Riak products fully open source, all the premium features are now available in the open source versions. Since Basho's demise, community ad-hoc and paid support options have arisen.

Language support

Riak has official drivers for Ruby, Java, Erlang and Python. There are also numerous community-supported drivers for other programming languages.

Community development

After bet365 purchased the Riak IP, the Riak products were made full open source and work to integrate premium features into the open source versions was completed with the 2.2.6 release.

History

Riak was originally written by Andy Gross and Justin Sheehy at Basho Technologies to power a web Sales Force Automation application by former engineers and executives from Akamai. There was more interest in the datastore technology than the applications built on it, so the company decided to build a business around Riak itself, gaining adoption throughout the Fortune 100 and becoming a foundation to many of the world's fastest-growing Web-based, mobile and social networking applications, as well as cloud service providers. Releases after graduation include

Riak KV

Riak 1.0 was released September 10, 2011

Riak CS

Riak CS was made open source on March 20, 2013

Riak TS

Riak TS was originally released in October 2015

Users

Notable users include AT&T, Comcast, GitHub, Best Buy, UK National Health Services (NHS), The Weather Channel, and Riot Games.