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DBMS > Amazon DocumentDB vs. Cassandra vs. etcd

System Properties Comparison Amazon DocumentDB vs. Cassandra vs. etcd

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Editorial information provided by DB-Engines
NameAmazon DocumentDB  Xexclude from comparisonCassandra  Xexclude from comparisonetcd  Xexclude from comparison
DescriptionFast, scalable, highly available, and fully managed MongoDB-compatible database serviceWide-column store based on ideas of BigTable and DynamoDB infoOptimized for write accessA distributed reliable key-value store
Primary database modelDocument storeWide column storeKey-value store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.43
Rank#143  Overall
#23  Document stores
Score118.99
Rank#10  Overall
#1  Wide column stores
Score10.32
Rank#46  Overall
#5  Key-value stores
Websiteaws.amazon.com/­documentdbcassandra.apache.orgetcd.io
github.com/­etcd-io/­etcd
Technical documentationaws.amazon.com/­documentdb/­resourcescassandra.apache.org/­doc/­latestetcd.io/­docs
github.com/­etcd-io/­etcd/­tree/­master/­Documentation
DeveloperApache Software Foundation infoApache top level project, originally developped by Facebook
Initial release20192008
Current release4.0, July 20213.4, August 2019
License infoCommercial or Open SourcecommercialOpen Source infoApache version 2Open Source infoApache Version 2.0
Cloud-based only infoOnly available as a cloud serviceyesnono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Astra DB: Multi-cloud DBaaS built on Apache Cassandra.
Implementation languageJavaGo
Server operating systemshostedBSD
Linux
OS X
Windows
FreeBSD
Linux
Windows infoexperimental
Data schemeschema-freeschema-freeschema-free
Typing infopredefined data types such as float or dateyesyesno
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.nonono
Secondary indexesyesrestricted infoonly equality queries, not always the best performing solutionno
SQL infoSupport of SQLnoSQL-like SELECT, DML and DDL statements (CQL)no
APIs and other access methodsproprietary protocol using JSON (MongoDB compatible)Proprietary protocol infoCQL (Cassandra Query Language, an SQL-like language)
Thrift
gRPC
JSON over HTTP
Supported programming languagesGo
Java
JavaScript (Node.js)
PHP
Python
C#
C++
Clojure
Erlang
Go
Haskell
Java
JavaScript infoNode.js
Perl
PHP
Python
Ruby
Scala
.Net
C
C++
Clojure
Erlang
Go
Haskell
Java
JavaScript (Node.js)
Perl
PHP
Python
R
Ruby
Rust
Scala
Tcl
Server-side scripts infoStored proceduresnonono
Triggersnoyesyes, watching key changes
Partitioning methods infoMethods for storing different data on different nodesnoneSharding infono "single point of failure"
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-availability zones for high availability, asynchronous replication for up to 15 read replicasselectable replication factor infoRepresentation of geographical distribution of servers is possibleUsing Raft consensus algorithm to ensure data replication with strong consistency among multiple replicas.
MapReduce infoOffers an API for user-defined Map/Reduce methodsno infomay be implemented via Amazon Elastic MapReduce (Amazon EMR)yesno
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual Consistency
Immediate Consistency infocan be individually decided for each write operation
Immediate Consistency
Foreign keys infoReferential integrityno infotypically not used, however similar functionality with DBRef possiblenono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataAtomic single-document operationsno infoAtomicity and isolation are supported for single operationsno
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.nono
User concepts infoAccess controlAccess rights for users and rolesAccess rights for users can be defined per objectno
More information provided by the system vendor
Amazon DocumentDBCassandraetcd
Specific characteristicsApache Cassandra is the leading NoSQL, distributed database management system, well...
» more
Competitive advantagesNo single point of failure ensures 100% availability . Operational simplicity for...
» more
Typical application scenariosInternet of Things (IOT), fraud detection applications, recommendation engines, product...
» more
Key customersApple, Netflix, Uber, ING,, Intuit,Fidelity, NY Times, Outbrain, BazaarVoice, Best...
» more
Market metricsCassandra is used by 40% of the Fortune 100.
» more
Licensing and pricing modelsApache license  Pricing for commercial distributions provided by DataStax and available...
» more

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and for displaying vendor-provided information such as key customers, competitive advantages and market metrics.

Related products and services
3rd partiesInstaclustr: Hosted & Managed Apache Cassandra as a Service
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CData: Connect to Big Data & NoSQL through standard Drivers.
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DataStax Enterprise: Apache Cassandra for enterprises.
» more

We invite representatives of vendors of related products to contact us for presenting information about their offerings here.

More resources
Amazon DocumentDBCassandraetcd
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Recent citations in the news

Amazon DocumentDB adds Global Clusters
2 June 2021, ZDNet

Amazon Adds Global Clusters to DocumentDB
9 June 2021, InfoQ.com

Introduction to Amazon DocumentDB With MongoDB Compatibility
19 October 2020, AiThority

AWS Announces the General Availability of Amazon MemoryDB for Redis
24 August 2021, InfoQ.com

AWS Announces Amazon DocumentDB (with MongoDB Compatibility)
9 January 2019, Business Wire

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Apache Cassandra Gets Its Day In the Sun
20 September 2021, CIO

Working with Azure Managed Instance for Cassandra
22 September 2021, InfoWorld

Instaclustr Announces General Availability of Fully Managed Apache Cassandra 4.0
21 September 2021, GlobeNewswire

NoSQL database types explained: Column-oriented databases
22 September 2021, TechTarget

DataStax Delivers the First Serverless Database Available for Production in Multiple Regions and Multiple Clouds
14 September 2021, The Bakersfield Californian

provided by Google News

Dynatrace : Keeping an eye on your control plane is critical to ensuring the high availability and health of your self-managed OpenShift Container Platform
22 September 2021, Marketscreener.com

All about performance: etcd 3.5 looks to make Kubernetes users happy • DEVCLASS
17 June 2021, DevClass

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

Global Service Discovery Software Market 2021 Share, Size Global Key Trends, Industry Demand, Key Findings, Regional Analysis, Growth Factors , Key Players Profiles, Future Prospects and Forecasts to 2025 – Stillwater Current
22 September 2021, Stillwater Current

Prioritizing Backup as Container Use Rises
20 September 2021, Container Journal

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