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DBMS > Apache Cassandra vs. HEAVY.AI vs. RRDtool vs. TDengine

System Properties Comparison Apache Cassandra vs. HEAVY.AI vs. RRDtool vs. TDengine

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Editorial information provided by DB-Engines
NameApache Cassandra  Xexclude from comparisonHEAVY.AI infoFormerly named 'OmniSci', rebranded to 'HEAVY.AI' in March 2022  Xexclude from comparisonRRDtool  Xexclude from comparisonTDengine  Xexclude from comparison
DescriptionWide-column store based on ideas of BigTable and DynamoDB infoOptimized for write accessA high performance, column-oriented RDBMS, specifically developed to harness the massive parallelism of modern CPU and GPU hardwareIndustry standard data logging and graphing tool for time series data. RRD is an acronym for round-robin database. infoThe data is stored in a circular buffer, thus the system storage footprint remains constant over time.Time Series DBMS and big data platform
Primary database modelWide column storeRelational DBMSTime Series DBMSTime Series DBMS
Secondary database modelsVector DBMS infostarting with release V5Spatial DBMSRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score98.94
Rank#11  Overall
#1  Wide column stores
Score1.41
Rank#153  Overall
#71  Relational DBMS
Score1.70
Rank#136  Overall
#11  Time Series DBMS
Score2.48
Rank#107  Overall
#9  Time Series DBMS
Websitecassandra.apache.orggithub.com/­heavyai/­heavydb
www.heavy.ai
oss.oetiker.ch/­rrdtoolgithub.com/­taosdata/­TDengine
tdengine.com
Technical documentationcassandra.apache.org/­doc/­latestdocs.heavy.aioss.oetiker.ch/­rrdtool/­docdocs.tdengine.com
DeveloperApache Software Foundation infoApache top level project, originally developped by FacebookHEAVY.AI, Inc.Tobias OetikerTDEngine, previously Taos Data
Initial release2008201619992019
Current release5.0-rc1, July 20245.10, January 20221.8.0, 20223.0, August 2022
License infoCommercial or Open SourceOpen Source infoApache version 2Open Source infoApache Version 2; enterprise edition availableOpen Source infoGPL V2 and FLOSSOpen Source infoAGPL V3, also commercial editions available
Cloud-based only infoOnly available as a cloud servicenononono
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 languageJavaC++ and CUDAC infoImplementations in Java (e.g. RRD4J) and C# availableC
Server operating systemsBSD
Linux
OS X
Windows
LinuxHP-UX
Linux
Linux
Windows
Data schemeschema-freeyesyesyes
Typing infopredefined data types such as float or dateyesyesNumeric data onlyyes
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 infoExporting into and restoring from XML files possibleno
Secondary indexesrestricted infoonly equality queries, not always the best performing solutionnonono
SQL infoSupport of SQLSQL-like SELECT, DML and DDL statements (CQL)yesnoStandard SQL with extensions for time-series applications
APIs and other access methodsProprietary protocol infoCQL (Cassandra Query Language, an SQL-like language)
Thrift
JDBC
ODBC
Thrift
Vega
in-process shared library
Pipes
JDBC
RESTful HTTP API
Supported programming languagesC#
C++
Clojure
Erlang
Go
Haskell
Java
JavaScript infoNode.js
Perl
PHP
Python
Ruby
Scala
All languages supporting JDBC/ODBC/Thrift
Python
C infowith librrd library
C# infowith a different implementation of RRDTool
Java infowith a different implementation of RRDTool
JavaScript (Node.js) infowith a different implementation of RRDTool
Lua
Perl
PHP infowith a wrapper library
Python
Ruby
C
C#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
Rust
Server-side scripts infoStored proceduresnononono
Triggersyesnonoyes, via alarm monitoring
Partitioning methods infoMethods for storing different data on different nodesSharding infono "single point of failure"Sharding infoRound robinnoneSharding
Replication methods infoMethods for redundantly storing data on multiple nodesselectable replication factor infoRepresentation of geographical distribution of servers is possibleMulti-source replicationnoneyes
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
Immediate Consistencynone
Foreign keys infoReferential integritynononono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoAtomicity and isolation are supported for single operationsnono
Concurrency infoSupport for concurrent manipulation of datayesyesyes infoby using the rrdcached daemonyes
Durability infoSupport for making data persistentyesyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyesyes
User concepts infoAccess controlAccess rights for users can be defined per objectfine grained access rights according to SQL-standardnoyes
More information provided by the system vendor
Apache CassandraHEAVY.AI infoFormerly named 'OmniSci', rebranded to 'HEAVY.AI' in March 2022RRDtoolTDengine
Specific characteristicsApache Cassandra is the leading NoSQL, distributed database management system, well...
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TDengine™ is a time-series database designed to help traditional industries overcome...
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Competitive advantagesNo single point of failure ensures 100% availability . Operational simplicity for...
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High Performance at Any Scale: With its distributed scalable architecture that grows...
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Typical application scenariosInternet of Things (IOT), fraud detection applications, recommendation engines, product...
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TDengine is purpose-built for Industry 4.0 and the Industrial IoT (IIoT) and particularly...
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Key customersApple, Netflix, Uber, ING,, Intuit,Fidelity, NY Times, Outbrain, BazaarVoice, Best...
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Market metricsApache Cassandra is used by 40% of the Fortune 100.
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TDengine has garnered over 23,000 stars on GitHub and is used in over 50 countries...
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Licensing and pricing modelsApache license  Pricing for commercial distributions provided by DataStax and available...
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TDengine OSS is free, open-source software released under the AGPLv3. TDengine Enterprise...
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