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DBMS > CouchDB vs. Dolt vs. Memcached vs. NuoDB vs. RethinkDB

System Properties Comparison CouchDB vs. Dolt vs. Memcached vs. NuoDB vs. RethinkDB

Editorial information provided by DB-Engines
NameCouchDB infostands for "Cluster Of Unreliable Commodity Hardware"  Xexclude from comparisonDolt  Xexclude from comparisonMemcached  Xexclude from comparisonNuoDB  Xexclude from comparisonRethinkDB  Xexclude from comparison
DescriptionA native JSON - document store inspired by Lotus Notes, scalable from globally distributed server-clusters down to mobile phones.A MySQL compatible DBMS with Git-like versioning of data and schemaIn-memory key-value store, originally intended for cachingNuoDB is a webscale distributed database that supports SQL and ACID transactionsDBMS for the Web with a mechanism to push updated query results to applications in realtime.
Primary database modelDocument storeRelational DBMSKey-value storeRelational DBMSDocument store
Secondary database modelsSpatial DBMS infousing the Geocouch extensionDocument storeSpatial DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score8.30
Rank#47  Overall
#7  Document stores
Score1.02
Rank#191  Overall
#89  Relational DBMS
Score18.08
Rank#32  Overall
#4  Key-value stores
Score0.94
Rank#197  Overall
#92  Relational DBMS
Score2.66
Rank#107  Overall
#20  Document stores
Websitecouchdb.apache.orggithub.com/­dolthub/­dolt
www.dolthub.com
www.memcached.orgwww.3ds.com/­nuodb-distributed-sql-databaserethinkdb.com
Technical documentationdocs.couchdb.org/­en/­stabledocs.dolthub.comgithub.com/­memcached/­memcached/­wikidoc.nuodb.comrethinkdb.com/­docs
DeveloperApache Software Foundation infoApache top-level project, originally developed by Damien Katz, a former Lotus Notes developerDoltHub IncDanga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournalDassault Systèmes infooriginally NuoDB, Inc.The Linux Foundation infosince July 2017
Initial release20052018200320132009
Current release3.3.3, December 20231.6.27, May 20242.4.1, August 2020
License infoCommercial or Open SourceOpen Source infoApache version 2Open Source infoApache Version 2.0Open Source infoBSD licensecommercial infolimited edition freeOpen Source infoApache Version 2
Cloud-based only infoOnly available as a cloud servicenonononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageErlangGoCC++C++
Server operating systemsAndroid
BSD
Linux
OS X
Solaris
Windows
Linux
macOS
Windows
FreeBSD
Linux
OS X
Unix
Windows
hosted infoAmazon EC2, Windows Azure, SoftLayer
Linux
OS X
Windows
Linux
OS X
Windows
Data schemeschema-freeyesschema-freeyesschema-free
Typing infopredefined data types such as float or datenoyesnoyesyes infostring, binary, float, bool, date, geometry
XML support infoSome form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.nononono
Secondary indexesyes infovia viewsyesnoyesyes
SQL infoSupport of SQLnoyesnoyesno
APIs and other access methodsRESTful HTTP/JSON APICLI Client
HTTP REST
Proprietary protocolADO.NET
JDBC
ODBC
Supported programming languagesC
C#
ColdFusion
Erlang
Haskell
Java
JavaScript
Lisp
Lua
Objective-C
OCaml
Perl
PHP
PL/SQL
Python
Ruby
Smalltalk
Ada
C
C#
C++
D
Delphi
Eiffel
Erlang
Haskell
Java
JavaScript (Node.js)
Objective-C
OCaml
Perl
PHP
Python
Ruby
Scheme
Tcl
.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
.Net
C
C++
Go
Java
JavaScript
JavaScript (Node.js)
PHP
Python
Ruby
C infocommunity-supported driver
C# infocommunity-supported driver
C++ infocommunity-supported driver
Clojure infocommunity-supported driver
Dart infocommunity-supported driver
Erlang infocommunity-supported driver
Go infocommunity-supported driver
Haskell infocommunity-supported driver
Java infoofficial driver
JavaScript (Node.js) infoofficial driver
Lisp infocommunity-supported driver
Lua infocommunity-supported driver
Objective-C infocommunity-supported driver
Perl infocommunity-supported driver
PHP infocommunity-supported driver
Python infoofficial driver
Ruby infoofficial driver
Scala infocommunity-supported driver
Server-side scripts infoStored proceduresView functions in JavaScriptyes infocurrently in alpha releasenoJava, SQL
TriggersyesyesnoyesClient-side triggers through changefeeds
Partitioning methods infoMethods for storing different data on different nodesSharding infoimproved architecture with release 2.0nonenonedata is dynamically stored/cached on the nodes where it is read/writtenSharding inforange based
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replication
Source-replica replication
A database can be cloned to multiple locations and be used there in isolation. Data/schema changes can be pushed/pulled explicitly between locations.none infoRepcached, a Memcached patch, provides this functionallityyes infoManaged transparently by NuoDBSource-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesnononoyes
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynoyesnoyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoatomic operations within a single document possibleACIDnoACID infotunable commit protocolAtomic single-document operations
Concurrency infoSupport for concurrent manipulation of datayes infostrategy: optimistic lockingyesyesyes infoMVCCyes infoMVCC based
Durability infoSupport for making data persistentyesyesnoyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyes infoTemporary tableno
User concepts infoAccess controlAccess rights for users can be defined per databaseOnly one user is configurable, and must be specified in the config file at startupyes infousing SASL (Simple Authentication and Security Layer) protocolStandard SQL roles/ privileges, Administrative Usersyes infousers and table-level permissions

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More resources
CouchDB infostands for "Cluster Of Unreliable Commodity Hardware"DoltMemcachedNuoDBRethinkDB
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