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DBMS > QuestDB

QuestDB System Properties

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Editorial information provided by DB-Engines
NameQuestDB
DescriptionA high performance open source SQL database for time series data
Primary database modelTime Series DBMS
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.31
Rank#260  Overall
#20  Time Series DBMS
Websitequestdb.io
Technical documentationquestdb.io/­docs/­introduction
DeveloperQuestDB Limited
Initial release2014
License infoCommercial or Open SourceOpen Source infoApache 2.0
Cloud-based only infoOnly available as a cloud serviceno
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageJava
Server operating systemsLinux
macOS
Windows
Data schemeyes infoschema-free via InfluxDB Line Protocol
Typing infopredefined data types such as float or dateyes
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 indexesno
SQL infoSupport of SQLSQL-like query language
APIs and other access methodsHTTP REST
InfluxDB Line Protocol (TCP/UDP)
JDBC
Supported programming languagesC infoPostgreSQL driver
C++
Go
Java
JavaScript (Node.js)
Python
Rust infoover HTTP
Server-side scripts infoStored proceduresno
Triggersno
Partitioning methods infoMethods for storing different data on different nodeshorizontal partitioning (by timestamps)
Replication methods infoMethods for redundantly storing data on multiple nodesConfigurable consistency for N replicas
MapReduce infoOffers an API for user-defined Map/Reduce methodsno
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 for single-table writes
Concurrency infoSupport for concurrent manipulation of datayes
Durability infoSupport for making data persistentyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes infothrough memory mapped files
More information provided by the system vendor
QuestDB
Specific characteristics
  • Relational model with native time series support
  • Column based storage and time partitioned
  • Lazy data access through memory mapped files
  • Repeatable read consistency
  • Heavy parralelisation for both ingestion and queries
  • Stream data in order of arrival
  • Write complexity of O(1): constant performance irrespective of the dataset size
  • Automatic on-the-fly time series out of order correction
  • SIMD accelerated vectorized SQL queries
  • Full SQL support, augmented for time-series
  • Joins support: INNER, OUTER, CROSS, ASOF, SPICE, FULL
  • Durable
  • Interfaces: HTTP, REST API, InfluxDB Line Protocol, PostgreSQL Wire, Grafana
Competitive advantages
  • Real-time data ingestion and istant SQL queries for time series

  • High performance translates into reduced infrastructure costs

  • APIs for read and writes: REST API, HTTP, InfluxDB Line Protocol, PostgreSQL Wire, Grafana

  • Efficient disk storage
  • Small footprint: 3MB executable
Typical application scenarios
  • Application metrics
  • Financial market data and algo trading
  • DevOps monitoring
  • Real-time analytics
  • IoT and sensor monitoring
  • OLAP/analytical workloads
Licensing and pricing models

Apache 2.0.

Related products and services

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More resources
QuestDB
Recent citations in the news

Database Technology Remains Competitive with Blockchains for Many Applications
26 October 2020, PaymentsJournal

QuestDB nabs $2.3M seed to build open source time series database
3 July 2020, Yahoo Finance Australia

Altinity grabs $4M seed to build cloud version of ClickHouse open-source data warehouse
1 October 2020, TechCrunch

Triangle headliners: Previewing 59 events & program deadlines through Aug.
10 August 2020, WRAL Tech Wire

Here are the 94 companies from Y Combinator’s Summer 2020 Demo Day 2
25 August 2020, TechCrunch

provided by Google News

Job opportunities

Technical Writer
QuestDB, San Francisco Bay Area, CA

Software engineer, backend (database)
QuestDB, San Francisco Bay Area, CA

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