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DBMS > EventStoreDB vs. Quasardb

System Properties Comparison EventStoreDB vs. Quasardb

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Editorial information provided by DB-Engines
NameEventStoreDB  Xexclude from comparisonQuasardb  Xexclude from comparison
DescriptionIndustrial-strength, open-source database solution built from the ground up for event sourcing.Distributed, high-performance timeseries database
Primary database modelEvent StoreTime Series DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.00
Rank#182  Overall
#1  Event Stores
Score0.13
Rank#333  Overall
#28  Time Series DBMS
Websitewww.eventstore.comquasar.ai
Technical documentationdevelopers.eventstore.comdoc.quasar.ai/­master
DeveloperEvent Store Limitedquasardb
Initial release20122009
Current release21.2, February 20213.14.1, January 2024
License infoCommercial or Open SourceOpen Sourcecommercial infoFree community edition, Non-profit organizations and non-commercial usage are eligible for free licenses
Cloud-based only infoOnly available as a cloud servicenono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageC++
Server operating systemsLinux
Windows
BSD
Linux
OS X
Windows
Data schemeschema-free
Typing infopredefined data types such as float or dateyes infointeger and binary
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.no
Secondary indexesyes infowith tags
SQL infoSupport of SQLSQL-like query language
APIs and other access methodsHTTP API
Supported programming languages.Net
C
C#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
R
Server-side scripts infoStored proceduresno
Triggersno
Partitioning methods infoMethods for storing different data on different nodesSharding infoconsistent hashing
Replication methods infoMethods for redundantly storing data on multiple nodesSource-replica replication with selectable replication factor
MapReduce infoOffers an API for user-defined Map/Reduce methodswith Hadoop integration
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate Consistency
Foreign keys infoReferential integrityno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACID
Concurrency infoSupport for concurrent manipulation of datayes
Durability infoSupport for making data persistentyes infoby using LevelDB
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes infoTransient mode
User concepts infoAccess controlCryptographically strong user authentication and audit trail

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More resources
EventStoreDBQuasardb
Recent citations in the news

Event Store Expands Cloud Access to Industry-First Event-Native Data Platform to Power Real-Time Data Analytics, Microservices and AI Applications
9 October 2024, Business Wire

Event Store Secures Series A Investment
29 September 2020, Newswire :) Press Release Distribution

provided by Google News

Aflibercept 8 mg Noninferior for RVO in QUASAR with W. Lloyd Clark, MD
19 February 2025, HCP Live

Determining The Absolute Chemical Abundance of Nitrogen and Sulfur in the Quasar Outflow of 3C298
24 November 2024, astrobiology.com

NVIDIA to Present Innovations at Hot Chips That Boost Data Center Performance and Energy Efficiency
23 August 2024, NVIDIA Blog

SQUAB—I: The First Release of Strange QUasar Candidates With ABnormal Astrometric Characteristics From Gaia EDR3 and SDSS
26 June 2024, Frontiers

Exploring secular variation of the gravitational constant from high-resolution quasar spectra
6 July 2024, Nature

provided by Google News



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