DBMS > CouchDB vs. etcd vs. Graph Engine vs. PouchDB

System Properties Comparison CouchDB vs. etcd vs. Graph Engine vs. PouchDB

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Editorial information provided by DB-Engines

Name

Description

A native JSON - document store inspired by Lotus Notes, scalable from globally distributed server-clusters down to mobile phones.

A distributed reliable key-value store

A distributed in-memory data processing engine, underpinned by a strongly-typed RAM store and a general distributed computation engine

JavaScript DBMS with an API inspired by CouchDB

Primary database model

Document store

Key-value store

Graph DBMS
Key-value store

Document store

DB-Engines Ranking measures the popularity of database management systems
Trend Chart

Score	15.62
Rank	#38	Overall
	#6	Document stores

Score	8.63
Rank	#48	Overall
	#5	Key-value stores

Score	0.70
Rank	#202	Overall
	#17	Graph DBMS
	#32	Key-value stores

Score	3.38
Rank	#88	Overall
	#16	Document stores

Website

couchdb.apache.org

etcd.io
github.com/etcd-io/etcd

www.graphengine.io

pouchdb.com

Technical documentation

docs.couchdb.org/en/stable

etcd.io/docs
github.com/etcd-io/etcd/tree/master/Documentation

www.graphengine.io/docs/manual

pouchdb.com/guides

Developer

Apache Software Foundation

Apache top-level project, originally developed by Damien Katz, a former Lotus Notes developer

Microsoft

Apache Software Foundation

Initial release

2005

2010

2012

Current release

3.1.1 , September 2020

3.4, August 2019

7.1.1, June 2019

License

Commercial or Open Source

Open Source

Apache version 2

Open Source

Apache Version 2.0

Open Source

MIT License

Open Source

Cloud-based only

Only available as a cloud service

DBaaS offerings (sponsored links)

Database as a Service

Providers of DBaaS offerings, please contact us to be listed.

Implementation language

Erlang

.NET and C

JavaScript

Server operating systems

Android
BSD
Linux
OS X
Solaris
Windows

FreeBSD
Linux
Windows

experimental

.NET

server-less, requires a JavaScript environment (browser, Node.js)

Data scheme

schema-free

yes

schema-free

Typing

predefined data types such as float or date

yes

XML support

Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.

Secondary indexes

yes

via views

yes

via views

SQL

Support of SQL

APIs and other access methods

RESTful HTTP/JSON API

gRPC
JSON over HTTP

RESTful HTTP API

HTTP REST

only for PouchDB Server
JavaScript API

Supported programming languages

C
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

C#
C++
F#
Visual Basic

JavaScript

Server-side scripts

Stored procedures

View functions in JavaScript

yes

View functions in JavaScript

Triggers

yes

yes, watching key changes

yes

Partitioning methods

Methods for storing different data on different nodes

Sharding

improved architecture with release 2.0

horizontal partitioning

Sharding

with a proxy-based framework, named couchdb-lounge

Replication methods

Methods for redundantly storing data on multiple nodes

Multi-source replication
Source-replica replication

Using Raft consensus algorithm to ensure data replication with strong consistency among multiple replicas.

Multi-source replication

also with CouchDB databases
Source-replica replication

also with CouchDB databases

MapReduce

Offers an API for user-defined Map/Reduce methods

yes

Consistency concepts

Methods to ensure consistency in a distributed system

Eventual Consistency

Immediate Consistency

Eventual Consistency

Foreign keys

Referential integrity

Transaction concepts

Support to ensure data integrity after non-atomic manipulations of data

atomic operations within a single document possible

Concurrency

Support for concurrent manipulation of data

yes

strategy: optimistic locking

yes

Durability

Support for making data persistent

yes

optional: either by committing a write-ahead log (WAL) to the local persistent storage or by dumping the memory to a persistent storage

yes

by using IndexedDB, WebSQL or LevelDB as backend

In-memory capabilities

Is there an option to define some or all structures to be held in-memory only.

yes

User concepts

Access control

Access rights for users can be defined per database

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More resources

DB-Engines blog posts

Couchbase climbs up the DB-Engines Ranking, increasing its popularity by 10% every month
2 June 2014, Matthias Gelbmann

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New kids on the block: database management systems implemented in JavaScript
1 December 2014, Matthias Gelbmann

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Recent citations in the news

Apache CouchDB 3.0 NoSQL Database: A Major Milestone -- ADTmag
27 February 2020, ADT Magazine

NoSQL Software Market Demand, Booming Worldwide and Strategic Outlook to 2025 | MongoDB, OrientDB, Amazon, Azure Cosmos DB, Couchbase, ArangoDB, CouchDB, MarkLogic
11 February 2021, NeighborWebSJ

CouchDB 3.0 ends admin party era • DEVCLASS
27 February 2020, DevClass

IBM extends Call for Code for Racial Justice program
24 February 2021, TechTarget

Global Document Databases Software Market Latest Technological Advancements 2026: MongoDB, Amazon, ArangoDB, Azure Cosmos DB, Couchbase etc. – NeighborWebSJ
26 February 2021, NeighborWebSJ

provided by Google News

Service Discovery Software Market Attractive Valuation Key Players: Hystrix, etcd, Apache, Eureka, SkyDNS, HashiCorp – NeighborWebSJ
1 February 2021, NeighborWebSJ

Distributed Key-Value Store etcd Graduates at CNCF
29 November 2020, InfoQ.com

Cloud Native Computing Foundation Announces etcd Graduation
24 November 2020, PRNewswire

Mitigating Kubernetes Security Gaps
9 February 2021, RTInsights

Presentation: A Kubernetes Operator for etcd
13 October 2020, InfoQ.com

provided by Google News

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24 February 2021, ZDNet

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17 February 2021, SiliconANGLE News

Intel and Katana Graph Team on Large-scale Graph Analytics
19 October 2020, HPCwire

Yahoo & Microsoft open source data analytics tools for Spark & Graph Engine
14 February 2017, Computer Business Review

DataStax releases enterprise platform making graph fully native
7 April 2020, ZDNet

provided by Google News

Getting Started with PouchDB Client-Side JavaScript Database
7 September 2016, SitePoint

Synchronizing Offline App Data with PouchDB
25 September 2015, SitePoint

Create Offline Web Apps Using Service Workers & PouchDB
7 March 2017, SitePoint

Create an AngularJS Web Application That Sync's With Couchbase Using PouchDB
29 January 2016, DZone News

Cross Platform Storage and Sync with Ionic Framework, Couchbase, and PouchDB
13 November 2015, DZone News

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