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DBMS > LevelDB vs. OpenTSDB vs. VelocityDB vs. YTsaurus

System Properties Comparison LevelDB vs. OpenTSDB vs. VelocityDB vs. YTsaurus

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Editorial information provided by DB-Engines
NameLevelDB  Xexclude from comparisonOpenTSDB  Xexclude from comparisonVelocityDB  Xexclude from comparisonYTsaurus  Xexclude from comparison
DescriptionEmbeddable fast key-value storage library that provides an ordered mapping from string keys to string valuesScalable Time Series DBMS based on HBaseA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)YTsaurus is an open source platform for distributed storage and processing.
Primary database modelKey-value storeTime Series DBMSGraph DBMS
Object oriented DBMS
Document store
Key-value store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.25
Rank#115  Overall
#19  Key-value stores
Score1.68
Rank#142  Overall
#12  Time Series DBMS
Score0.11
Rank#354  Overall
#37  Graph DBMS
#15  Object oriented DBMS
Score0.21
Rank#324  Overall
#45  Document stores
#48  Key-value stores
Websitegithub.com/­google/­leveldbopentsdb.netvelocitydb.comytsaurus.tech
Technical documentationgithub.com/­google/­leveldb/­blob/­main/­doc/­index.mdopentsdb.net/­docs/­build/­html/­index.htmlvelocitydb.com/­UserGuideytsaurus.tech/­docs/­en
DeveloperGooglecurrently maintained by Yahoo and other contributorsVelocityDB IncYandex
Initial release2011201120112023
Current release1.23, February 20217.x
License infoCommercial or Open SourceOpen Source infoBSDOpen Source infoLGPLcommercialOpen Source infoApache License, Version 2.0
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.
Implementation languageC++JavaC#C++
Server operating systemsIllumos
Linux
OS X
Windows
Linux
Windows
Any that supports .NETUbuntu
Data schemeschema-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.nononono
Secondary indexesnonoyes
SQL infoSupport of SQLnononoYQL, an SQL-based language, is supported
APIs and other access methodsHTTP API
Telnet API
.Net
Supported programming languagesC++
Go
Java info3rd party binding
JavaScript (Node.js) info3rd party binding
Python info3rd party binding
Erlang
Go
Java
Python
R
Ruby
.NetC++
Go
Java
JavaScript
Python
Server-side scripts infoStored proceduresnonono
TriggersnonoCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesnoneSharding infobased on HBaseShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnoneselectable replication factor infobased on HBaseyes
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononoyes
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate Consistency infobased on HBaseImmediate Consistency
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanonoACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyes infowith automatic compression on writesyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyes
User concepts infoAccess controlnonoBased on Windows AuthenticationAccess Control Lists

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More resources
LevelDBOpenTSDBVelocityDBYTsaurus
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