@H_502_67@In-memory key-value store,originally intended for caching

@H_502_67@One of the most popular document stores

@H_502_67@In-memory database with configurable options performance vs. persistency

@H_502_67@A widely usedenterprise search enginebased onApache Lucene

@H_502_67@Apache Software Foundation

@H_502_67@Danga Interactive

@H_502_67@MongoDB,Inc

@H_502_67@Salvatore Sanfilippo

@H_502_67@Apache Software Foundation

@H_502_67@2008

@H_502_67@2003

@H_502_67@2009

@H_502_67@2004

@H_502_67@Open Source

@H_502_67@Open Source

@H_502_67@Java

@H_502_67@C

@H_502_67@C++

@H_502_67@Java

@H_502_67@Linux

@H_502_67@Linux

@H_502_67@Unix

@H_502_67@Unix

@H_502_67@OS X

@H_502_67@OS X

@H_502_67@Windows

@H_502_67@Windows

@H_502_67@

@H_502_67@FreeBSD

@H_502_67@Solaris

@H_502_67@BSD

@H_502_67@schema-free

@H_502_67@yes

@H_502_67@no

@H_502_67@yes

@H_502_67@Secondary indexes

@H_502_67@sql

@H_502_67@no

@H_502_67@Java API

@H_502_67@Java API

@H_502_67@RESTful HTTP API

@H_502_67@RESTful HTTP API

@H_502_67@Thrift

@H_502_67@C

@H_502_67@C#

@H_502_67@.Net

@H_502_67@.Net

@H_502_67@C++

@H_502_67@Groovy

@H_502_67@ColdFusion

@H_502_67@Clojure

@H_502_67@Java

@H_502_67@Erlang

@H_502_67@Erlang

@H_502_67@Python

@H_502_67@Python

@H_502_67@Scala

@H_502_67@Lua

@H_502_67@Scala

@H_502_67@Ruby

@H_502_67@Ruby

@H_502_67@PHP

@H_502_67@PHP

@H_502_67@JavaScript

@H_502_67@JavaScript

@H_502_67@Perl

@H_502_67@Perl

@H_502_67@OCaml

@H_502_67@any language that supports sockets and either XML or JSON

@H_502_67@Lisp

@H_502_67@Dart

@H_502_67@Go

@H_502_67@Actionscript

@H_502_67@Objective-C

@H_502_67@Haskell

@H_502_67@Smalltalk

@H_502_67@Clojure

@H_502_67@Tcl

@H_502_67@MatLab

@H_502_67@PowerShell

@H_502_67@Prolog

@H_502_67@Java plugins

@H_502_67@no

@H_502_67@cloud/distributed (via Zookeeper)

@H_502_67@Master-slave replication

@H_502_67@Consistency concepts

@H_502_67@Immediate Consistency

@H_502_67@Transaction concepts

@H_502_67@Durability

@H_502_67@User concepts

@H_502_67@Access Control Lists (ACL)

@H_502_67@Users can be defined with full access or read-only access

@H_502_67@very simple password-based access control

@H_502_67@Specific characteristics

@H_502_67@Redis very much emphasize performance. In any design decisions performance has priority over features or memory requirements.

@H_502_67@Architecture: Lives in web stack,ships by default with Jetty. Connectors,JDBC,multiple languages,true morphological CJK,binary document filters (Tika),Entity Extraction (UIMA)

@H_502_67@Applications that can hold all data in memory,and that have high performance requirements.

Name	HBase	Memcached	MongoDB	Redis	Solr
Description	Wide-column store based on Apache Hadoop and on concepts of BigTable
Developer
Initial release
License
Implementation language
Server operating systems	All OS with a Java VM and a servlet container
Database model	Wide column store	Key-value store	Document store	Search engine
Data scheme
Typing
APIs and other access methods	Proprietary protocol	proprietary protocol using JSON	proprietary protocol
Supported programming languages
	Server-side scripts
	Triggers
	Partitioning methods	Sharding	none	Sharding
					Replication methods	selectable replication factor	Master-slave replication	Master-slave replication
	MapReduce	Immediate Consistency	Eventual Consistency		Eventual Consistency
	Foreign keys	no	optimistic locking	optimistic locking
	Concurrency
Typical application scenarios		Mostly used for caching