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DBMS > Apache Cassandra vs. Cloudflare Workers KV vs. CouchDB vs. NebulaGraph

System Properties Comparison Apache Cassandra vs. Cloudflare Workers KV vs. CouchDB vs. NebulaGraph

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Editorial information provided by DB-Engines
NameApache Cassandra  Xexclude from comparisonCloudflare Workers KV  Xexclude from comparisonCouchDB infostands for "Cluster Of Unreliable Commodity Hardware"  Xexclude from comparisonNebulaGraph  Xexclude from comparison
DescriptionWide-column store based on ideas of BigTable and DynamoDB infoOptimized for write accessA global, low-latency, key-value store for applications on Cloudflare with exceptionally high read volumes and low-latency.A native JSON - document store inspired by Lotus Notes, scalable from globally distributed server-clusters down to mobile phones.A distributed, linear scalable, high perfomant Graph DBMS
Primary database modelWide column storeKey-value storeDocument storeGraph DBMS
Secondary database modelsVector DBMS infostarting with release V5Spatial DBMS infousing the Geocouch extension
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score98.94
Rank#11  Overall
#1  Wide column stores
Score0.29
Rank#283  Overall
#40  Key-value stores
Score7.46
Rank#51  Overall
#7  Document stores
Score1.92
Rank#122  Overall
#11  Graph DBMS
Websitecassandra.apache.orgwww.cloudflare.com/­developer-platform/­workers-kvcouchdb.apache.orggithub.com/­vesoft-inc/­nebula
www.nebula-graph.io
Technical documentationcassandra.apache.org/­doc/­latestdevelopers.cloudflare.com/­kv/­apidocs.couchdb.org/­en/­stabledocs.nebula-graph.io
DeveloperApache Software Foundation infoApache top level project, originally developped by FacebookCloudflareApache Software Foundation infoApache top-level project, originally developed by Damien Katz, a former Lotus Notes developerVesoft Inc.
Initial release2008201820052019
Current release5.0-rc1, July 20243.3.3, December 2023
License infoCommercial or Open SourceOpen Source infoApache version 2commercialOpen Source infoApache version 2Open Source infoApache Version 2.0 + Common Clause 1.0
Cloud-based only infoOnly available as a cloud servicenoyesnono
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 languageJavaErlangC++
Server operating systemsBSD
Linux
OS X
Windows
hostedAndroid
BSD
Linux
OS X
Solaris
Windows
Linux
Data schemeschema-freeschema-freeschema-freeStrong typed schema
Typing infopredefined data types such as float or dateyesnonoyes
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 indexesrestricted infoonly equality queries, not always the best performing solutionnoyes infovia viewsyes infoNebula Graph internally uses the Key-Value store RocksDB for persistency. The vertices, edges, and their properties are stored as Key while their values are stored as Value. The primary indexes are per Key and secondary indexes are per Value.
SQL infoSupport of SQLSQL-like SELECT, DML and DDL statements (CQL)nonoSQL-like query language
APIs and other access methodsProprietary protocol infoCQL (Cassandra Query Language, an SQL-like language)
Thrift
HTTP REST
Proprietary protocol
RESTful HTTP/JSON APIBrowser interface
console (shell)
Cypher Query Language
GO Object Graph Mapper
Java Object Graph Mapper
NGBatis infoORM framework for NebulaGraph and Spring-Boot
Proprietary native API
Python Object Graph Mapper
Query language nGQL
Supported programming languagesC#
C++
Clojure
Erlang
Go
Haskell
Java
JavaScript infoNode.js
Perl
PHP
Python
Ruby
Scala
C
C++
Dart
JavaScript
Kotlin
Python
Rust
Scala
C
C#
ColdFusion
Erlang
Haskell
Java
JavaScript
Lisp
Lua
Objective-C
OCaml
Perl
PHP
PL/SQL
Python
Ruby
Smalltalk
.Net
C++
Go
Java
PHP
Python
Server-side scripts infoStored proceduresnonoView functions in JavaScriptuser defined functions
Triggersyesnoyes
Partitioning methods infoMethods for storing different data on different nodesSharding infono "single point of failure"Sharding infoimproved architecture with release 2.0Sharding
Replication methods infoMethods for redundantly storing data on multiple nodesselectable replication factor infoRepresentation of geographical distribution of servers is possibleyesMulti-source replication
Source-replica replication
Causal Clustering using Raft protocol
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesnoyesno
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency
Immediate Consistency infocan be individually decided for each write operation
Eventual ConsistencyEventual ConsistencyImmediate Consistency
Foreign keys infoReferential integritynononoyes infoRelationships in graphs
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoAtomicity and isolation are supported for single operationsnono infoatomic operations within a single document possibleACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes infostrategy: optimistic lockingyes
Durability infoSupport for making data persistentyesyesyesyes infousing RocksDB
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.nononoyes
User concepts infoAccess controlAccess rights for users can be defined per objectAccess rights for users can be defined per databaseRole-based access control
More information provided by the system vendor
Apache CassandraCloudflare Workers KVCouchDB infostands for "Cluster Of Unreliable Commodity Hardware"NebulaGraph
Specific characteristicsApache Cassandra is the leading NoSQL, distributed database management system, well...
» more
NebulaGraph is a truly distributed, linearly scalable, lightning-fast graph database,...
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Competitive advantagesNo single point of failure ensures 100% availability . Operational simplicity for...
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NebulaGraph boasts the world's only graph database solution that is able to host...
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Typical application scenariosInternet of Things (IOT), fraud detection applications, recommendation engines, product...
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Social networking Fraud detection Knowledge graph Data warehouse management Anti...
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Key customersApple, Netflix, Uber, ING,, Intuit,Fidelity, NY Times, Outbrain, BazaarVoice, Best...
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Companies from a variety of industries have implemented NebulaGraph Database in production,...
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Market metricsApache Cassandra is used by 40% of the Fortune 100.
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At our very early stage, NebulaGraph has already received over 10,000 stars on GitHub...
» more
Licensing and pricing modelsApache license  Pricing for commercial distributions provided by DataStax and available...
» more
NebulaGraph is open source and free to use under Apache 2.0 license.
» more
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