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DBMS > LevelDB vs. OpenQM vs. OpenTSDB vs. Oracle Coherence vs. TDengine

System Properties Comparison LevelDB vs. OpenQM vs. OpenTSDB vs. Oracle Coherence vs. TDengine

Editorial information provided by DB-Engines
NameLevelDB  Xexclude from comparisonOpenQM infoalso called QM  Xexclude from comparisonOpenTSDB  Xexclude from comparisonOracle Coherence  Xexclude from comparisonTDengine  Xexclude from comparison
DescriptionEmbeddable fast key-value storage library that provides an ordered mapping from string keys to string valuesQpenQM is a high-performance, self-tuning, multi-value DBMSScalable Time Series DBMS based on HBaseOracles in-memory data grid solutionTime Series DBMS and big data platform
Primary database modelKey-value storeMultivalue DBMSTime Series DBMSKey-value storeTime Series DBMS
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.35
Rank#111  Overall
#19  Key-value stores
Score0.27
Rank#298  Overall
#10  Multivalue DBMS
Score1.68
Rank#146  Overall
#12  Time Series DBMS
Score1.92
Rank#130  Overall
#22  Key-value stores
Score2.60
Rank#107  Overall
#8  Time Series DBMS
Websitegithub.com/­google/­leveldbwww.rocketsoftware.com/­products/­rocket-multivalue-application-development-platform/­rocket-open-qmopentsdb.netwww.oracle.com/­java/­coherencegithub.com/­taosdata/­TDengine
tdengine.com
Technical documentationgithub.com/­google/­leveldb/­blob/­main/­doc/­index.mdopentsdb.net/­docs/­build/­html/­index.htmldocs.oracle.com/­en/­middleware/­standalone/­coherencedocs.tdengine.com
DeveloperGoogleRocket Software, originally Martin Phillipscurrently maintained by Yahoo and other contributorsOracleTDEngine, previously Taos Data
Initial release20111993201120072019
Current release1.23, February 20213.4-1214.1, August 20233.0, August 2022
License infoCommercial or Open SourceOpen Source infoBSDOpen Source infoGPLv2, extended commercial license availableOpen 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 languageC++JavaJavaC
Server operating systemsIllumos
Linux
OS X
Windows
AIX
FreeBSD
Linux
macOS
Raspberry Pi
Solaris
Windows
Linux
Windows
All OS with a Java VMLinux
Windows
Data schemeschema-freeyes infowith some exceptionsschema-freeschema-freeyes
Typing infopredefined data types such as float or datenonumeric 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.noyesnonono
Secondary indexesnoyesnonono
SQL infoSupport of SQLnonononoStandard SQL with extensions for time-series applications
APIs and other access methodsHTTP API
Telnet API
JCache
JPA
RESTful HTTP API
JDBC
RESTful HTTP API
Supported programming languagesC++
Go
Java info3rd party binding
JavaScript (Node.js) info3rd party binding
Python info3rd party binding
.Net
Basic
C
Java
Objective C
PHP
Python
Erlang
Go
Java
Python
R
Ruby
.Net
C++
Java
C
C#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
Rust
Server-side scripts infoStored proceduresnoyesnonono
Triggersnoyesnoyes infoLive Eventsyes, via alarm monitoring
Partitioning methods infoMethods for storing different data on different nodesnoneyesSharding infobased on HBaseShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnoneyesselectable replication factor infobased on HBaseyes, with selectable consistency levelyes
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyImmediate Consistency infobased on HBaseEventual Consistency
Immediate Consistency
Foreign keys infoReferential integritynonononono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDnoconfigurable
Concurrency infoSupport for concurrent manipulation of datayesyesyesyesyes
Durability infoSupport for making data persistentyes infowith automatic compression on writesyesyesyes infooptionallyyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyes
User concepts infoAccess controlnoAccess rights can be defined down to the item levelnoauthentification to access the cache via certificates or http basic authenticationyes
More information provided by the system vendor
LevelDBOpenQM infoalso called QMOpenTSDBOracle CoherenceTDengine
Specific characteristicsTDengine™ is a next generation data historian purpose-built for Industry 4.0 and...
» more
Competitive advantagesHigh Performance at any Scale: TDengine is purpose-built for handling massive industrial...
» more
Typical application scenariosTDengine is designed for Industrial IoT scenarios, including: Manufacturing Connected...
» more
Market metricsTDengine has garnered over 22,500 stars on GitHub and is used in over 50 countries...
» more
Licensing and pricing modelsTDengine OSS is an open source, cloud native time series database. It includes built-in...
» more
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More resources
LevelDBOpenQM infoalso called QMOpenTSDBOracle CoherenceTDengine
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