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DBMS > HarperDB vs. LevelDB vs. OpenTSDB vs. OushuDB vs. TDengine

System Properties Comparison HarperDB vs. LevelDB vs. OpenTSDB vs. OushuDB vs. TDengine

Editorial information provided by DB-Engines
NameHarperDB  Xexclude from comparisonLevelDB  Xexclude from comparisonOpenTSDB  Xexclude from comparisonOushuDB  Xexclude from comparisonTDengine  Xexclude from comparison
DescriptionHarperDB takes the "stack" out of "tech stack" by combining an ultra-fast document-style data store, in-memory cache, real-time message broker, and your application components into a single distributed technology.Embeddable fast key-value storage library that provides an ordered mapping from string keys to string valuesScalable Time Series DBMS based on HBaseA data warehouse powered by Apache HAWQ supporting descriptive analysis and advanced machine learningTime Series DBMS and big data platform
Primary database modelDocument storeKey-value storeTime Series DBMSRelational DBMSTime Series DBMS
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.55
Rank#240  Overall
#38  Document stores
Score2.26
Rank#111  Overall
#18  Key-value stores
Score1.51
Rank#141  Overall
#12  Time Series DBMS
Score0.04
Rank#358  Overall
#151  Relational DBMS
Score2.27
Rank#110  Overall
#9  Time Series DBMS
Websitewww.harperdb.iogithub.com/­google/­leveldbopentsdb.netwww.oushu.com/­product/­oushuDBgithub.com/­taosdata/­TDengine
tdengine.com
Technical documentationdocs.harperdb.io/­docsgithub.com/­google/­leveldb/­blob/­main/­doc/­index.mdopentsdb.net/­docs/­build/­html/­index.htmlwww.oushu.com/­documentationdocs.tdengine.com
DeveloperHarperDBGooglecurrently maintained by Yahoo and other contributorsOushuTDEngine, previously Taos Data
Initial release2017201120112019
Current release3.1, August 20211.23, February 20214.0.1, August 20203.0, August 2022
License infoCommercial or Open Sourcecommercial infofree community edition availableOpen Source infoBSDOpen Source infoLGPLcommercialOpen Source infoAGPL V3, also commercial editions available
Cloud-based only infoOnly available as a cloud servicenonononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageNode.jsC++JavaC
Server operating systemsLinux
OS X
Illumos
Linux
OS X
Windows
Linux
Windows
LinuxLinux
Windows
Data schemedynamic schemaschema-freeschema-freeyesyes
Typing infopredefined data types such as float or dateyes infoJSON data typesnonumeric data for metrics, strings for tagsyesyes
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 indexesyesnonoyesno
SQL infoSupport of SQLSQL-like data manipulation statementsnonoFull-featured ANSI SQL supportStandard SQL with extensions for time-series applications
APIs and other access methodsJDBC
ODBC
React Hooks
RESTful HTTP/JSON API
WebSocket
HTTP API
Telnet API
JDBC
ODBC
JDBC
RESTful HTTP API
Supported programming languages.Net
C
C#
C++
ColdFusion
D
Dart
Delphi
Erlang
Go
Haskell
Java
JavaScript (Node.js)
Lisp
MatLab
Objective C
Perl
PHP
PowerShell
Prolog
Python
R
Ruby
Rust
Scala
Swift
C++
Go
Java info3rd party binding
JavaScript (Node.js) info3rd party binding
Python info3rd party binding
Erlang
Go
Java
Python
R
Ruby
C
C++
C
C#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
Rust
Server-side scripts infoStored proceduresCustom Functions infosince release 3.1nonoyesno
Triggersnononoyesyes, via alarm monitoring
Partitioning methods infoMethods for storing different data on different nodesA table resides as a whole on one (or more) nodes in a clusternoneSharding infobased on HBaseyesSharding
Replication methods infoMethods for redundantly storing data on multiple nodesyes infothe nodes on which a table resides can be definednoneselectable replication factor infobased on HBaseyes
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononoHadoop integration
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyImmediate Consistency infobased on HBase
Foreign keys infoReferential integritynononono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataAtomic execution of specific operationsnonoACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyesyes
Durability infoSupport for making data persistentyes, using LMDByes infowith automatic compression on writesyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesno
User concepts infoAccess controlAccess rights for users and rolesnonoKerberos, SSL and role based accessyes
More information provided by the system vendor
HarperDBLevelDBOpenTSDBOushuDBTDengine
Specific characteristicsTDengineā„¢ is a time-series database designed to help traditional industries overcome...
» more
Competitive advantagesHigh Performance at Any Scale: With its distributed scalable architecture that grows...
» more
Typical application scenariosTDengine is purpose-built for Industry 4.0 and the Industrial IoT (IIoT) and particularly...
» more
Market metricsTDengine has garnered over 23,000 stars on GitHub and is used in over 50 countries...
» more
Licensing and pricing modelsTDengine OSS is free, open-source software released under the AGPLv3. TDengine Enterprise...
» more
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and for displaying vendor-provided information such as key customers, competitive advantages and market metrics.

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More resources
HarperDBLevelDBOpenTSDBOushuDBTDengine
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