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DBMS > Quasardb vs. SpaceTime vs. STSdb vs. XTDB

System Properties Comparison Quasardb vs. SpaceTime vs. STSdb vs. XTDB

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Editorial information provided by DB-Engines
NameQuasardb  Xexclude from comparisonSpaceTime  Xexclude from comparisonSTSdb  Xexclude from comparisonXTDB infoformerly named Crux  Xexclude from comparison
DescriptionDistributed, high-performance timeseries databaseSpaceTime is a spatio-temporal DBMS with a focus on performance.Key-Value Store with special method for indexing infooptimized for high performance using a special indexing methodA general purpose database with bitemporal SQL and Datalog and graph queries
Primary database modelTime Series DBMSSpatial DBMSKey-value storeDocument store
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.14
Rank#332  Overall
#29  Time Series DBMS
Score0.00
Rank#383  Overall
#7  Spatial DBMS
Score0.04
Rank#360  Overall
#52  Key-value stores
Score0.11
Rank#343  Overall
#46  Document stores
Websitequasar.aiwww.mireo.com/­spacetimegithub.com/­STSSoft/­STSdb4github.com/­xtdb/­xtdb
www.xtdb.com
Technical documentationdoc.quasar.ai/­masterwww.xtdb.com/­docs
DeveloperquasardbMireoSTS Soft SCJuxt Ltd.
Initial release2009202020112019
Current release3.14.1, January 20244.0.8, September 20151.19, September 2021
License infoCommercial or Open Sourcecommercial infoFree community edition, Non-profit organizations and non-commercial usage are eligible for free licensescommercialOpen Source infoGPLv2, commercial license availableOpen Source infoMIT License
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++C++C#Clojure
Server operating systemsBSD
Linux
OS X
Windows
LinuxWindowsAll OS with a Java 8 (and higher) VM
Linux
Data schemeschema-freeyesyesschema-free
Typing infopredefined data types such as float or dateyes infointeger and binaryyesyes infoprimitive types and user defined types (classes)yes, extensible-data-notation format
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 indexesyes infowith tagsnonoyes
SQL infoSupport of SQLSQL-like query languageA subset of ANSI SQL is implementednolimited SQL, making use of Apache Calcite
APIs and other access methodsHTTP APIRESTful HTTP API.NET Client APIHTTP REST
JDBC
Supported programming languages.Net
C
C#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
R
C#
C++
Python
C#
Java
Clojure
Java
Server-side scripts infoStored proceduresnononono
Triggersnononono
Partitioning methods infoMethods for storing different data on different nodesSharding infoconsistent hashingFixed-grid hypercubesnonenone
Replication methods infoMethods for redundantly storing data on multiple nodesSource-replica replication with selectable replication factorReal-time block device replication (DRBD)noneyes, each node contains all data
MapReduce infoOffers an API for user-defined Map/Reduce methodswith Hadoop integrationnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynononono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDnonoACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyes infoby using LevelDByesyesyes, flexibel persistency by using storage technologies like Apache Kafka, RocksDB or LMDB
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes infoTransient modeno
User concepts infoAccess controlCryptographically strong user authentication and audit trailyesno

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More resources
QuasardbSpaceTimeSTSdbXTDB infoformerly named Crux
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