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DBMS > Dolt vs. KeyDB vs. OpenSearch vs. XTDB

System Properties Comparison Dolt vs. KeyDB vs. OpenSearch vs. XTDB

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Editorial information provided by DB-Engines
NameDolt  Xexclude from comparisonKeyDB  Xexclude from comparisonOpenSearch  Xexclude from comparisonXTDB infoformerly named Crux  Xexclude from comparison
DescriptionA MySQL compatible DBMS with Git-like versioning of data and schemaAn ultra-fast, open source Key-value store fully compatible with Redis API, modules, and protocolsA distributed, RESTful search and analytics engine forked from Elasticsearch and based on Apache LuceneA general purpose database with bitemporal SQL and Datalog and graph queries
Primary database modelRelational DBMSKey-value storeSearch engine
Vector DBMS
Document store
Secondary database modelsDocument storeVector DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.60
Rank#232  Overall
#106  Relational DBMS
Score0.71
Rank#221  Overall
#32  Key-value stores
Score17.38
Rank#32  Overall
#4  Search engines
#2  Vector DBMS
Score0.20
Rank#314  Overall
#46  Document stores
Websitegithub.com/­dolthub/­dolt
www.dolthub.com
github.com/­Snapchat/­KeyDB
keydb.dev
github.com/­opensearch-project
opensearch.org
github.com/­xtdb/­xtdb
www.xtdb.com
Technical documentationdocs.dolthub.comdocs.keydb.devopensearch.org/­docs/­latestwww.xtdb.com/­docs
DeveloperDoltHub IncEQ Alpha Technology Ltd.The OpenSearch Software FoundationJuxt Ltd.
Initial release2018201920212019
Current release2.19, February 20251.19, September 2021
License infoCommercial or Open SourceOpen Source infoApache Version 2.0Open Source infoBSD-3Open Source infoApache Version 2.0Open 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.
STACKIT OpenSearch offers OpenSearch in a managed version in enterprise grade, 100% GDPR-compliant, for a wide range of applications like analytics, website search, offering scalability and fast data access.
Implementation languageGoC++JavaClojure
Server operating systemsLinux
macOS
Windows
LinuxAll OS with a Java VMAll OS with a Java 8 (and higher) VM
Linux
Data schemeyesschema-freeschema-free infoFlexible type definitions. Once a type is defined, it is persistentschema-free
Typing infopredefined data types such as float or dateyespartial infoSupported data types are strings, hashes, lists, sets and sorted sets, bit arrays, hyperloglogs and geospatial indexesyesyes, 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 indexesyesyes infoby using the Redis Search moduleyes infoAll search fields are automatically indexedyes
SQL infoSupport of SQLyesnoSQL-like query languagelimited SQL, making use of Apache Calcite
APIs and other access methodsCLI Client
HTTP REST
Proprietary protocol infoRESP - REdis Serialization ProtocoJava API
RESTful HTTP/JSON API
HTTP REST
JDBC
Supported programming languagesAda
C
C#
C++
D
Delphi
Eiffel
Erlang
Haskell
Java
JavaScript (Node.js)
Objective-C
OCaml
Perl
PHP
Python
Ruby
Scheme
Tcl
C
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
Go
Java
JavaScript (Node.js)
PHP
Python
Ruby infoElasticsearch client
Clojure
Java
Server-side scripts infoStored proceduresyes infocurrently in alpha releaseLuayesno
Triggersyesnoyes infoby using the 'percolation' featureno
Partitioning methods infoMethods for storing different data on different nodesnoneShardingShardingnone
Replication methods infoMethods for redundantly storing data on multiple nodesA database can be cloned to multiple locations and be used there in isolation. Data/schema changes can be pushed/pulled explicitly between locations.Multi-source replication
Source-replica replication
yesyes, each node contains all data
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency
Strong eventual consistency with CRDTs
Eventual Consistency infoSynchronous doc based replication. Get by ID may show delays up to 1 sec. Configurable write consistency: one, quorum, all
Foreign keys infoReferential integrityyesnonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDOptimistic locking, atomic execution of commands blocks and scriptsnoACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyesyes infoConfigurable mechanisms for persistency via snapshots and/or operations logsyesyes, 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
User concepts infoAccess controlOnly one user is configurable, and must be specified in the config file at startupsimple password-based access control and ACL

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More resources
DoltKeyDBOpenSearchXTDB infoformerly named Crux
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