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DBMS > CouchDB vs. etcd vs. PouchDB vs. SQL.JS vs. SurrealDB

System Properties Comparison CouchDB vs. etcd vs. PouchDB vs. SQL.JS vs. SurrealDB

Editorial information provided by DB-Engines
NameCouchDB infostands for "Cluster Of Unreliable Commodity Hardware"  Xexclude from comparisonetcd  Xexclude from comparisonPouchDB  Xexclude from comparisonSQL.JS  Xexclude from comparisonSurrealDB  Xexclude from comparison
DescriptionA native JSON - document store inspired by Lotus Notes, scalable from globally distributed server-clusters down to mobile phones.A distributed reliable key-value storeJavaScript DBMS with an API inspired by CouchDBPort of SQLite to JavaScriptA fully ACID transactional, developer-friendly, multi-model DBMS
Primary database modelDocument storeKey-value storeDocument storeRelational DBMSDocument store
Graph DBMS
Secondary database modelsSpatial DBMS infousing the Geocouch extension
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score8.30
Rank#47  Overall
#7  Document stores
Score7.03
Rank#54  Overall
#5  Key-value stores
Score2.34
Rank#112  Overall
#21  Document stores
Score0.63
Rank#241  Overall
#112  Relational DBMS
Score1.02
Rank#190  Overall
#33  Document stores
#18  Graph DBMS
Websitecouchdb.apache.orgetcd.io
github.com/­etcd-io/­etcd
pouchdb.comsql.js.orgsurrealdb.com
Technical documentationdocs.couchdb.org/­en/­stableetcd.io/­docs
github.com/­etcd-io/­etcd/­tree/­master/­Documentation
pouchdb.com/­guidessql.js.org/­documentation/­index.htmlsurrealdb.com/­docs
DeveloperApache Software Foundation infoApache top-level project, originally developed by Damien Katz, a former Lotus Notes developerApache Software FoundationAlon Zakai infoenhancements implemented by othersSurrealDB Ltd
Initial release2005201220122022
Current release3.3.3, December 20233.4, August 20197.1.1, June 2019v1.5.0, May 2024
License infoCommercial or Open SourceOpen Source infoApache version 2Open Source infoApache Version 2.0Open SourceOpen SourceOpen Source
Cloud-based only infoOnly available as a cloud servicenonononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageErlangGoJavaScriptJavaScriptRust
Server operating systemsAndroid
BSD
Linux
OS X
Solaris
Windows
FreeBSD
Linux
Windows infoexperimental
server-less, requires a JavaScript environment (browser, Node.js)server-less, requires a JavaScript environment (browser, Node.js)Linux
macOS
Windows
Data schemeschema-freeschema-freeschema-freeyesschema-free
Typing infopredefined data types such as float or datenononoyesyes
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 viewsnoyes infovia views
SQL infoSupport of SQLnononoyes infoSQL-92 is not fully supportedSQL-like query language
APIs and other access methodsRESTful HTTP/JSON APIgRPC
JSON over HTTP
HTTP REST infoonly for PouchDB Server
JavaScript API
JavaScript APIGraphQL
RESTful HTTP API
WebSocket
Supported programming languagesC
C#
ColdFusion
Erlang
Haskell
Java
JavaScript
Lisp
Lua
Objective-C
OCaml
Perl
PHP
PL/SQL
Python
Ruby
Smalltalk
.Net
C
C++
Clojure
Erlang
Go
Haskell
Java
JavaScript (Node.js)
Perl
PHP
Python
R
Ruby
Rust
Scala
Tcl
JavaScriptJavaScriptDeno
Go
JavaScript (Node.js)
Rust
Server-side scripts infoStored proceduresView functions in JavaScriptnoView functions in JavaScriptno
Triggersyesyes, watching key changesyesno
Partitioning methods infoMethods for storing different data on different nodesSharding infoimproved architecture with release 2.0Sharding infowith a proxy-based framework, named couchdb-loungenone
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replication
Source-replica replication
Using Raft consensus algorithm to ensure data replication with strong consistency among multiple replicas.Multi-source replication infoalso with CouchDB databases
Source-replica replication infoalso with CouchDB databases
none
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesnoyesnono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual ConsistencyImmediate ConsistencyEventual Consistencynone
Foreign keys infoReferential integritynononoyes
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoatomic operations within a single document possiblenonoACIDACID
Concurrency infoSupport for concurrent manipulation of datayes infostrategy: optimistic lockingyesyes
Durability infoSupport for making data persistentyesyesyes infoby using IndexedDB, WebSQL or LevelDB as backendno infoexcept by serializing a db to a fileyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.nonoyesyes
User concepts infoAccess controlAccess rights for users can be defined per databasenononoyes, based on authentication and database rules

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More resources
CouchDB infostands for "Cluster Of Unreliable Commodity Hardware"etcdPouchDBSQL.JSSurrealDB
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