DB-EnginesInfluxDB: Focus on building software with an easy-to-use serverless, scalable time series platformEnglish
Deutsch
Knowledge Base of Relational and NoSQL Database Management Systemsprovided by solid IT

DBMS > Cassandra vs. KeyDB vs. ScyllaDB

System Properties Comparison Cassandra vs. KeyDB vs. ScyllaDB

Please select another system to include it in the comparison.

Editorial information provided by DB-Engines
NameCassandra  Xexclude from comparisonKeyDB  Xexclude from comparisonScyllaDB  Xexclude from comparison
DescriptionWide-column store based on ideas of BigTable and DynamoDB infoOptimized for write accessAn ultra-fast, open source Key-value store fully compatible with Redis API, modules, and protocolsCassandra and DynamoDB compatible wide column store
Primary database modelWide column storeKey-value storeWide column store
Secondary database modelsKey-value store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score116.22
Rank#11  Overall
#1  Wide column stores
Score0.76
Rank#244  Overall
#38  Key-value stores
Score5.63
Rank#77  Overall
#8  Wide column stores
Websitecassandra.apache.orggithub.com/­JohnSully/­KeyDB
keydb.dev
www.scylladb.com
Technical documentationcassandra.apache.org/­doc/­latestdocs.keydb.devdocs.scylladb.com
DeveloperApache Software Foundation infoApache top level project, originally developped by FacebookEQ Alpha Technology Ltd.ScyllaDB
Initial release200820192015
Current release4.1.0, December 2022ScyllaDB Open Source 5.0, July 2022
License infoCommercial or Open SourceOpen Source infoApache version 2Open Source infoBSD-3Open Source infoOpen Source (AGPL), commercial license available
Cloud-based only infoOnly available as a cloud servicenonono
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.
  • Aiven for Apache Cassandra: Fully managed, open source NoSQL database specifically designed to be highly available, performant, and scalable.
Implementation languageJavaC++C++
Server operating systemsBSD
Linux
OS X
Windows
LinuxLinux
Data schemeschema-freeschema-freeschema-free
Typing infopredefined data types such as float or dateyespartial infoSupported data types are strings, hashes, lists, sets and sorted sets, bit arrays, hyperloglogs and geospatial indexesyes
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 solutionyes infoby using the Redis Search moduleyes infocluster global secondary indices
SQL infoSupport of SQLSQL-like SELECT, DML and DDL statements (CQL)noSQL-like DML and DDL statements (CQL)
APIs and other access methodsProprietary protocol infoCQL (Cassandra Query Language, an SQL-like language)
Thrift
Proprietary protocol infoRESP - REdis Serialization ProtocoProprietary protocol (CQL) infocompatible with CQL (Cassandra Query Language, an SQL-like language)
RESTful HTTP API (DynamoDB compatible)
Thrift
Supported programming languagesC#
C++
Clojure
Erlang
Go
Haskell
Java
JavaScript infoNode.js
Perl
PHP
Python
Ruby
Scala
C
C#
C++
Clojure
Crystal
D
Dart
Elixir
Erlang
Fancy
Go
Haskell
Haxe
Java
JavaScript (Node.js)
Lisp
Lua
MatLab
Objective-C
OCaml
Pascal
Perl
PHP
Prolog
Pure Data
Python
R
Rebol
Ruby
Rust
Scala
Scheme
Smalltalk
Swift
Tcl
Visual Basic
For CQL interface: C#, C++, Clojure, Erlang, Go, Haskell, Java, JavaScript, Node.js, Perl, PHP, Python, Ruby, Rust, Scala
For DynamoDB interface: .Net, ColdFusion, Erlang, Groovy, Java, JavaScript, Perl, PHP, Python, Ruby
Server-side scripts infoStored proceduresnoLuayes, Lua
Triggersyesnono
Partitioning methods infoMethods for storing different data on different nodesSharding infono "single point of failure"ShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesselectable replication factor infoRepresentation of geographical distribution of servers is possibleMulti-source replication
Source-replica replication
selectable replication factor infoRepresentation of geographical distribution of servers is possible
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesnono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency
Immediate Consistency infocan be individually decided for each write operation
Eventual Consistency
Strong eventual consistency with CRDTs
Eventual Consistency
Tunable Consistency infocan be individually decided for each write operation
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoAtomicity and isolation are supported for single operationsOptimistic locking, atomic execution of commands blocks and scriptsno infoAtomicity and isolation are supported for single operations
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesyes infoConfigurable mechanisms for persistency via snapshots and/or operations logsyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyesyes infoin-memory tables
User concepts infoAccess controlAccess rights for users can be defined per objectsimple password-based access control and ACLAccess rights for users can be defined per object
More information provided by the system vendor
CassandraKeyDBScyllaDB
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
News

The Year in Real-Time for Apache Pulsar and Streaming
31 January 2023

How to Get the Most Out of Cassandra Summit 2023
25 January 2023

K2View Leverages Astra DB to Provide a Complete View into Any Business Entity
23 January 2023

The Year in Real-Time for Apache Pulsar and Cassandra
19 January 2023

3 Things I Learned from The Apache Cassandra® Corner Podcast
18 January 2023

We invite representatives of system vendors to contact us for updating and extending the system information,
and for displaying vendor-provided information such as key customers, competitive advantages and market metrics.

Related products and services
3rd partiesDataStax Cassandra: Zero touch operations, configuration and management with true autoscaling
» more

Instaclustr: Hosted & Managed Apache Cassandra as a Service
» more

CData: Connect to Big Data & NoSQL through standard Drivers.
» more

Aiven for Apache Cassandra: A truly distributed database that can handle large volumes of writes.
» more

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

More resources
CassandraKeyDBScyllaDB
DB-Engines blog posts

Cassandra keeps climbing the ranks of the DB-Engines Ranking
3 May 2016, Matthias Gelbmann

Oracle is the DBMS of the Year
5 January 2016, Paul Andlinger, Matthias Gelbmann

Winners, losers and an attractive newcomer in Novembers DB-Engines ranking
2 November 2015, Paul Andlinger

show all

Conferences and events

Building scalable real-time apps with AstraDB (DBaaS) and Vaadin
Webinar, 6:00 PM - 6:30 PM GMT (UTC+00:00), 30 January 2023 (finished)

Recent citations in the news

Apache Cassandra: Where Is the Open Source Database Headed ...
27 January 2023, TDWI

Supercharging Cassandra NoSQL For Machine Learning
13 January 2023, The Next Platform

The Linux Foundation Announces Conference Schedule for ...
18 January 2023, PR Newswire

Tykhe Block Ventures Holds First Close Of Blockchain Growth Fund
1 February 2023, BeInCrypto

Progress Software acquires NoSQL data integration engine MarkLogic
4 January 2023, SiliconANGLE News

provided by Google News

Snap snaps up database developer KeyDB to make its infrastructure more snappy
12 May 2022, TechCrunch

Dragonfly 0.13 Database Adds Experimental SSD-Based Data ...
2 January 2023, Phoronix

Intel takes direct aim at Nvidia
12 May 2022, Protocol

4 Easy Ways to Convert DVD to Digital Video on Windows
19 June 2022, MSPoweruser

How Snap rebuilt the infrastructure that now supports 347 million daily users
26 August 2022, Protocol

provided by Google News

ScyllaDB Announces Latest Release of Its NoSQL Database
12 July 2022, Datanami

“Generative AI is the latest buzz in the VC industry and will attract ...
15 January 2023, CTech

ScyllaDB Ranked as one of the Fastest-Growing Company in North ...
17 November 2022, GlobeNewswire

ScyllaDB 5.0 set to advance NoSQL database capabilities
10 February 2022, TechTarget

ScyllaDB Expands Leadership Team with Red Hat Veteran Amidst ...
30 November 2022, GlobeNewswire

provided by Google News

Job opportunities

Senior Data Engineer (Couchbase, UDB Database, Cassandra)
Amex, Scottsdale, AZ

Sr Database Administrator (Cassandra/No SQL)
Dexcom, Remote

MongoDB Database Administration Senior Advisor - Work from Home
Cigna, Hartford, CT

Database Administrator (DBA)
Maximo Global Tech, Remote

Database Administrator - DBA
iSpeech, Newark, NJ

DevOps Senior System Administrator
CACI, Annapolis Junction, MD

Senior Linux DevOps Infrastructure Engineer Remote
NMI, Remote

Senior Database Administrator (Europe)
PEX, Remote

Backend Software Engineer
Singularity 6, Los Angeles, CA

Senior Database Administrator (US, Canada)
PEX, Oregon

Lead Database Administrator (Europe)
PEX, Remote

Full Stack Engineer I
Impact, Seattle, WA

jobs by Indeed



Share this page

Featured Products

Redis logo

The world’s most loved real‑time data platform.
Try free

The definitive guide for Cassandra

Imagine What You Could Do if Scalability Wasn‘t a Problem!
Download the Cassandra e-book for free!

MariaDB logo

SkySQL, the ultimate
MariaDB cloud, is here.

Get started with SkySQL today!

AllegroGraph logo

Graph Database Leader for AI Knowledge Graph Applications - The Most Secure Graph Database Available.
Free Download

Neo4j logo

See for yourself how a graph database can make your life easier.
Use Neo4j online for free.

Present your product here