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DBMS > Cassandra vs. Dgraph vs. Percona Server for MongoDB

System Properties Comparison Cassandra vs. Dgraph vs. Percona Server for MongoDB

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Editorial information provided by DB-Engines
NameCassandra  Xexclude from comparisonDgraph  Xexclude from comparisonPercona Server for MongoDB  Xexclude from comparison
DescriptionWide-column store based on ideas of BigTable and DynamoDB infoOptimized for write accessDistributed and scalable native Graph DBMSA drop-in replacement for MongoDB Community Edition with enterprise-grade features.
Primary database modelWide column storeGraph DBMSDocument store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score123.22
Rank#10  Overall
#1  Wide column stores
Score1.07
Rank#139  Overall
#9  Graph DBMS
Score0.51
Rank#205  Overall
#28  Document stores
Websitecassandra.apache.orgdgraph.iowww.percona.com/­software/­mongo-database/­percona-server-for-mongodb
Technical documentationcassandra.apache.org/­doc/­latestdocs.dgraph.iowww.percona.com/­doc/­percona-server-for-mongodb/­LATEST/­index.html
DeveloperApache Software Foundation infoApache top level project, originally developped by FacebookDgraph Labs, Inc.Percona
Initial release200820162015
Current release3.11.4, February 20193.4.10-2.10, November 2017
License infoCommercial or Open SourceOpen Source infoApache version 2Open Source infoApache 2.0Open Source infoGPL Version 2
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaGoC++
Server operating systemsBSD
Linux
OS X
Windows
Linux
OS X
Windows
Linux
Data schemeschema-freeschema-freeschema-free
Typing infopredefined data types such as float or dateyesyesyes
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 indexesrestricted infoonly equality queries, not always the best performing solutionyesyes
SQL infoSupport of SQLSQL-like SELECT, DML and DDL statements (CQL)nono
APIs and other access methodsProprietary protocol infoCQL (Cassandra Query Language, an SQL-like language)
Thrift
GraphQL query language
gRPC (using protocol buffers) API
HTTP API
proprietary protocol using JSON
Supported programming languagesC#
C++
Clojure
Erlang
Go
Haskell
Java
JavaScript infoNode.js
Perl
PHP
Python
Ruby
Scala
C#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
Ruby
Actionscript
C
C#
C++
Clojure
ColdFusion
D
Dart
Delphi
Erlang
Go
Groovy
Haskell
Java
JavaScript
Lisp
Lua
MatLab
Perl
PHP
PowerShell
Prolog
Python
R
Ruby
Scala
Smalltalk
Server-side scripts infoStored proceduresnonoJavaScript
Triggersyesnono
Partitioning methods infoMethods for storing different data on different nodesSharding infono "single point of failure"yesSharding
Replication methods infoMethods for redundantly storing data on multiple nodesselectable replication factor infoRepresentation of geographical distribution of servers is possibleSynchronous replication via RaftMaster-slave replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesnoyes
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency
Immediate Consistency infocan be individually decided for each write operation
Immediate ConsistencyEventual Consistency
Immediate Consistency
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoAtomicity and isolation are supported for single operationsACIDno
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.noyes infovia In-Memory Engine
User concepts infoAccess controlAccess rights for users can be defined per objectno infoPlanned for future releasesAccess rights for users and roles
More information provided by the system vendor
CassandraDgraphPercona Server for MongoDB
Specific characteristicsApache Cassandra is the leading NoSQL, distributed database management system, well...
» more
100% drop in replacement for MongoDB Provides enterprise-grade features in an open...
» more
Competitive advantagesNo single point of failure ensures 100% availability . Operational simplicity for...
» more
Horizontally scalable transactional graph database with fast arbitrary-depth joins...
» more
Encrypted WiredTiger storage engine provides data at rest encryption SASL authentication...
» more
Typical application scenariosInternet of Things (IOT), fraud detection applications, recommendation engines, product...
» more
Unstructured data models Internet of Things applications Meeting requirements for...
» more
Key customersApple, Netflix, Uber, ING,, Intuit,Fidelity, NY Times, Outbrain, BazaarVoice, Best...
» more
SB Tech Moz Meu Patrocinio Passportal See more Percona customers .
» more
Market metricsCassandra is used by 40% of the Fortune 100.
» more
Over 385,000 downloads 800+ customers. Awarded Bronze Stevie® Award winner for "New...
» more
Licensing and pricing modelsApache license  Pricing for commercial distributions provided by DataStax and available...
» more
Open source and 100% free of fees and license agreements
» more
Related products and services
3rd partiesCData: Connect to Big Data & NoSQL through standard Drivers.
» more

DataStax Enterprise: Apache Cassandra for enterprises.
» more

Instaclustr: Fully Hosted and Managed Apache Cassandra
» more

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

More resources
CassandraDgraphPercona Server for MongoDB
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