Riak

Riak is written in Lisp and simplifies development by allowing developers the ability to quickly prototype, test, and deploy database-enabled applications.

Because it's a NoSQL database, don't expect any relational tables, but the classic key/value model that powers all other similar NoSQL systems.

Since it launched, it spread pretty quickly, being a good alternative to systems like Cassandra, Hadoop, CouchDB or MongoDB.

What is new in this release:

• Bugfix/key transform crash
• Refresh efile port if gone
• Fixed scan error deadlock
• Fixed remove expired on read race
• Fixed extra tombstones on update
• Fixed race listing readable files
• Use SC bucket types and buckets to know ensembles
• Updated to use new breadth-first AAE exchange
• Allow handoff sender to abort handoff by throw'ing from fold fun
• Handoff sender sends sync periodically
• Added breadth-first AAE exchange
• Do not treat errors as success

What is new in version 2.0.5:

• Bugfix/key transform crash
• Refresh efile port if gone
• Fixed scan error deadlock
• Fixed remove expired on read race
• Fixed extra tombstones on update
• Fixed race listing readable files
• Use SC bucket types and buckets to know ensembles
• Updated to use new breadth-first AAE exchange
• Allow handoff sender to abort handoff by throw'ing from fold fun
• Handoff sender sends sync periodically
• Added breadth-first AAE exchange
• Do not treat errors as success

What is new in version 1.4.7:

• Fixed Bitcask NIF mode
• Fixed 2i AAE being disabled on AAE tree rebuilds
• Active Anti-Entropy exchange & repair throttle

What is new in version 1.4.2:

• Fixed various problems related to crashing stats.
• Fixed extra noisy logs introduced in 1.4.1 (Not found errors and others).
• Fixed issues related to 2i queries timing out.
• Added more protection against corrupt data in backends.

What is new in version 1.4.0:

• Changed behavior of riak attach
• riak-admin transfers Improvements
• Improved Binary Format

What is new in version 1.3.1:

• 2i Big Integer Encoding
• Improved bitcask startup time
• Fixed behaviour of PR/PW

What is new in version 1.1.1:

• MapReduce Changes
• Bugs Fixed:
• Map-reduce jobs fail during rolling upgrade to 1.1
• Race Condition causes Javascript VMs to never be returned to VM Pool
• Avoid {case_clause, ok} errors when vnode backend fails to start
• Bitcask - Fix incorrect NIF error tuples

What is new in version 1.0.2:

• Badstate crash in handoff.
• Pipe mapreduce jobs fail in mixed 1.0.0/1.0.1 clusters.
• bitcask-backed vnodes handle requests while dropping.
• Eleveldb not opened with configuration options from environment.

What is new in version 0.14.2:

• Riak 0.14.2 is a patch-level release for the 0.14 series and as such restricted to bug fixes.

What is new in version 0.13.0:

• Map/Reduce performance has been substantially improved.
• Riak has been updated with the necessary changes to compile on Erlang R14, but has not been thoroughly tested on R14.