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DBMS > Cloudant vs. Microsoft Azure Cosmos DB vs. RocksDB

System Properties Comparison Cloudant vs. Microsoft Azure Cosmos DB vs. RocksDB

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Editorial information provided by DB-Engines
NameCloudant  Xexclude from comparisonMicrosoft Azure Cosmos DB infoformer name was Azure DocumentDB  Xexclude from comparisonRocksDB  Xexclude from comparison
DescriptionDatabase as a Service offering based on Apache CouchDBGlobally distributed, horizontally scalable, multi-model database serviceEmbeddable persistent key-value store optimized for fast storage (flash and RAM)
Primary database modelDocument storeDocument store
Graph DBMS
Key-value store
Wide column store
Key-value store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score3.68
Rank#82  Overall
#15  Document stores
Score30.80
Rank#24  Overall
#3  Document stores
#2  Graph DBMS
#3  Key-value stores
#3  Wide column stores
Score2.87
Rank#94  Overall
#17  Key-value stores
Websitecloudant.comazure.microsoft.com/­services/­cosmos-dbrocksdb.org
Technical documentationdocs.cloudant.comdocs.microsoft.com/­en-us/­azure/­cosmos-dbgithub.com/­facebook/­rocksdb/­wiki
DeveloperIBM, Apache Software Foundation infoIBM acquired Cloudant in February 2014MicrosoftFacebook, Inc.
Initial release201020142013
Current release6.8.1, April 2020
License infoCommercial or Open SourcecommercialcommercialOpen Source infoBSD
Cloud-based only infoOnly available as a cloud serviceyesyesno
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageErlangC++
Server operating systemshostedhosted
Data schemeschema-freeschema-freeschema-free
Typing infopredefined data types such as float or datenoyes infoJSON typesno
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.nono
Secondary indexesyesyes infoAll properties auto-indexed by defaultno
SQL infoSupport of SQLnoSQL-like query languageno
APIs and other access methodsRESTful HTTP/JSON APIDocumentDB API
Graph API (Gremlin)
MongoDB API
RESTful HTTP API
Table API
C++ API
Java API
Supported programming languagesC#
Java
JavaScript
Objective-C
PHP
Ruby
.Net
C#
Java
JavaScript
JavaScript (Node.js)
MongoDB client drivers written for various programming languages
Python
C++
Java
Server-side scripts infoStored proceduresView functions (Map-Reduce) in JavaScriptJavaScriptno
TriggersyesJavaScriptno
Partitioning methods infoMethods for storing different data on different nodesShardingSharding infoImplicit feature of the cloud servicenone
Replication methods infoMethods for redundantly storing data on multiple nodesMaster-master replication
Master-slave replication
yes infoImplicit feature of the cloud servicenone
MapReduce infoOffers an API for user-defined Map/Reduce methodsyeswith Hadoop integration infoIntegration with Hadoop/HDInsight on Azure*no
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual ConsistencyBounded Staleness
Consistent Prefix
Eventual Consistency
Immediate Consistency infoConsistency level configurable on request level
Session Consistency
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoatomic operations within a document possibleMulti-item ACID transactions with snapshot isolation within a partitionyes
Concurrency infoSupport for concurrent manipulation of datayes infoOptimistic lockingyesyes
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.noyes
User concepts infoAccess controlAccess rights for users can be defined per databaseAccess rights can be defined down to the item levelno

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More resources
CloudantMicrosoft Azure Cosmos DB infoformer name was Azure DocumentDBRocksDB
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Recent citations in the news

IBM’s new CEO lays out his roadmap
5 May 2020, InfoWorld

IBM Expands Cloud Database Services with Kubernetes
26 September 2019, EnterpriseAI

How to Trigger OpenWhisk Actions on Cloudant Databases Changes
27 July 2016, DZone News

IBM Research – Confidentiality and Governance of Cloud Services
24 April 2020, DevOps.com

Cloudant Contributes Database Scalability and Fault-Tolerance Framework to Apache CouchDB™
22 July 2013, PR Newswire

provided by Google News

Microsoft introduces important changes to Azure Cosmos DB
2 June 2020, Optocrypto

Microsoft introduces major Azure Cosmos DB changes
29 May 2020, TechRadar

Microsoft introduces a more cost-effective way to use Azure Cosmos DB - MSPoweruser
25 May 2020, MSPoweruser

Improved Flexibility, Cost Drive Microsoft Cosmos DB Improvements
23 May 2020, ITPro Today

Azure Database offerings and Cosmos DB get a flurry of new capabilities
19 May 2020, Neowin

provided by Google News

AMD EPYC vs. Intel Xeon Cascadelake With Facebook's RocksDB Database
17 October 2019, Phoronix

Toshiba Memory America Optimizes RocksDB for SSDs
1 August 2019, Business Wire

Toshiba Memory America Highlights TRocksDB at SNIA's 2019 Storage Developer Conference
23 September 2019, Business Wire

Micron Announces An Open-Source Storage Engine Designed For SSDs, Persistent Memory
27 April 2020, Phoronix

Alluxio Bolsters Data Orchestration for Hybrid Cloud World
11 July 2019, Datanami

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