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DBMS > KeyDB vs. QuestDB vs. Sequoiadb vs. SQL.JS vs. TiDB

System Properties Comparison KeyDB vs. QuestDB vs. Sequoiadb vs. SQL.JS vs. TiDB

Editorial information provided by DB-Engines
NameKeyDB  Xexclude from comparisonQuestDB  Xexclude from comparisonSequoiadb  Xexclude from comparisonSQL.JS  Xexclude from comparisonTiDB  Xexclude from comparison
DescriptionAn ultra-fast, open source Key-value store fully compatible with Redis API, modules, and protocolsA high performance open source SQL database for time series dataNewSQL database with distributed OLTP and SQLPort of SQLite to JavaScriptTiDB is an open source distributed SQL database that supports Hybrid Transactional/Analytical Processing (HTAP) workloads. It is MySQL compatible and features horizontal scalability, strong consistency, and high availability.
Primary database modelKey-value storeTime Series DBMSDocument store
Relational DBMS
Relational DBMSRelational DBMS
Secondary database modelsRelational DBMSDocument store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.71
Rank#226  Overall
#33  Key-value stores
Score2.52
Rank#109  Overall
#9  Time Series DBMS
Score0.45
Rank#261  Overall
#41  Document stores
#122  Relational DBMS
Score0.53
Rank#252  Overall
#116  Relational DBMS
Score4.66
Rank#70  Overall
#38  Relational DBMS
Websitegithub.com/­Snapchat/­KeyDB
keydb.dev
questdb.iowww.sequoiadb.comsql.js.orgpingcap.com
Technical documentationdocs.keydb.devquestdb.io/­docswww.sequoiadb.com/­en/­index.php?m=Files&a=indexsql.js.org/­documentation/­index.htmldocs.pingcap.com/­tidb/­stable
DeveloperEQ Alpha Technology Ltd.QuestDB Technology IncSequoiadb Ltd.Alon Zakai infoenhancements implemented by othersPingCAP, Inc.
Initial release20192014201320122016
Current release8.0.0, March 2024
License infoCommercial or Open SourceOpen Source infoBSD-3Open Source infoApache 2.0Open Source infoServer: AGPL; Client: Apache V2Open SourceOpen Source infoApache 2.0
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.
TiDB Cloud: Fully-managed TiDB Service. Bring everything great about TiDB to the cloud.
Implementation languageC++Java (Zero-GC), C++, RustC++JavaScriptGo, Rust
Server operating systemsLinuxLinux
macOS
Windows
Linuxserver-less, requires a JavaScript environment (browser, Node.js)Linux
Data schemeschema-freeyes infoschema-free via InfluxDB Line Protocolschema-freeyesyes
Typing infopredefined data types such as float or datepartial infoSupported data types are strings, hashes, lists, sets and sorted sets, bit arrays, hyperloglogs and geospatial indexesyesyes infooid, date, timestamp, binary, regexyesyes
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.nonononono
Secondary indexesyes infoby using the Redis Search modulenoyesyes
SQL infoSupport of SQLnoSQL with time-series extensionsSQL-like query languageyes infoSQL-92 is not fully supportedyes
APIs and other access methodsProprietary protocol infoRESP - REdis Serialization ProtocoHTTP REST
InfluxDB Line Protocol (TCP/UDP)
JDBC
PostgreSQL wire protocol
proprietary protocol using JSONJavaScript APIGORM
JDBC
ODBC
Proprietary protocol
SQLAlchemy
Supported programming languagesC
C#
C++
Clojure
Crystal
D
Dart
Elixir
Erlang
Fancy
Go
Haskell
Haxe
Java
JavaScript (Node.js)
Lisp
Lua
MatLab
Objective-C
OCaml
Pascal
Perl
PHP
Prolog
Pure Data
Python
R
Rebol
Ruby
Rust
Scala
Scheme
Smalltalk
Swift
Tcl
Visual Basic
C infoPostgreSQL driver
C++
Go
Java
JavaScript (Node.js)
Python
Rust infoover HTTP
.Net
C++
Java
PHP
Python
JavaScriptAda
C
C#
C++
D
Delphi
Eiffel
Erlang
Haskell
Java
JavaScript (Node.js)
Objective-C
OCaml
Perl
PHP
Python
Ruby
Scheme
Tcl
Server-side scripts infoStored proceduresLuanoJavaScriptnono
Triggersnonononono
Partitioning methods infoMethods for storing different data on different nodesShardinghorizontal partitioning (by timestamps)Shardingnonehorizontal partitioning (by key range)
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replication
Source-replica replication
Source-replica replication with eventual consistencySource-replica replicationnoneUsing Raft consensus algorithm to ensure data replication with strong consistency among multiple replicas.
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonononoyes infowith TiSpark Connector
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency
Strong eventual consistency with CRDTs
Immediate ConsistencyEventual ConsistencynoneImmediate Consistency
Foreign keys infoReferential integritynononoyesyes infofull support since version 6.6
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataOptimistic locking, atomic execution of commands blocks and scriptsACID for single-table writesDocument is locked during a transactionACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyes infoConfigurable mechanisms for persistency via snapshots and/or operations logsyesyesno infoexcept by serializing a db to a fileyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyes infothrough memory mapped filesnoyesno
User concepts infoAccess controlsimple password-based access control and ACLsimple password-based access controlnoFine grained access rights according to SQL-standard
More information provided by the system vendor
KeyDBQuestDBSequoiadbSQL.JSTiDB
Specific characteristicsRelational model with native time series support Column-based storage and time partitioned...
» more
TiDB is an advanced open-source, distributed SQL database for modern application...
» more
Competitive advantagesHigh ingestion throughput: peak of 4M rows/sec (TSBS Benchmark) Code optimizations...
» more
- HORIZONTAL SCALING : TiDB grants total transparency into your data workloads without...
» more
Typical application scenariosFinancial tick data Industrial IoT Application Metrics Monitoring
» more
TiDB is ideal for transactional applications that require extreme scalability and...
» more
Key customersBanks & Hedge funds, Yahoo, OKX, Airbus, Aquis Exchange, Net App, Cloudera, Airtel,...
» more
Block, Pinterest, Catalyst, Bolt, Flipkart, Capcom, Shopee (E-commerce), JD Cloud...
» more
Market metrics34K+ GitHub stars 5K+ members in TiDB Community Slack 1K+ community contributors...
» more
Licensing and pricing modelsOpen source Apache 2.0 QuestDB Enterprise QuestDB Cloud
» more
TiDB Community : Free open source software (Apache 2.0) TiDB Self-Hosted : Enterprise...
» more
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and for displaying vendor-provided information such as key customers, competitive advantages and market metrics.

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More resources
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