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DBMS > Realm vs. RocksDB vs. Splunk vs. TerarkDB vs. Tkrzw

System Properties Comparison Realm vs. RocksDB vs. Splunk vs. TerarkDB vs. Tkrzw

Editorial information provided by DB-Engines
NameRealm  Xexclude from comparisonRocksDB  Xexclude from comparisonSplunk  Xexclude from comparisonTerarkDB  Xexclude from comparisonTkrzw infoSuccessor of Tokyo Cabinet and Kyoto Cabinet  Xexclude from comparison
DescriptionA DBMS built for use on mobile devices that’s a fast, easy to use alternative to SQLite and Core DataEmbeddable persistent key-value store optimized for fast storage (flash and RAM)Analytics Platform for Big DataA key-value store forked from RocksDB with advanced compression algorithms. It can be used standalone or as a storage engine for MySQL and MongoDBA concept of libraries, allowing an application program to store and query key-value pairs in a file. Successor of Tokyo Cabinet and Kyoto Cabinet
Primary database modelDocument storeKey-value storeSearch engineKey-value storeKey-value store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score7.60
Rank#52  Overall
#9  Document stores
Score3.65
Rank#85  Overall
#11  Key-value stores
Score86.45
Rank#14  Overall
#2  Search engines
Score0.00
Rank#383  Overall
#60  Key-value stores
Score0.00
Rank#383  Overall
#60  Key-value stores
Websiterealm.iorocksdb.orgwww.splunk.comgithub.com/­bytedance/­terarkdbdbmx.net/­tkrzw
Technical documentationrealm.io/­docsgithub.com/­facebook/­rocksdb/­wikidocs.splunk.com/­Documentation/­Splunkbytedance.larkoffice.com/­docs/­doccnZmYFqHBm06BbvYgjsHHcKc
DeveloperRealm, acquired by MongoDB in May 2019Facebook, Inc.Splunk Inc.ByteDance, originally TerarkMikio Hirabayashi
Initial release20142013200320162020
Current release8.11.4, April 20240.9.3, August 2020
License infoCommercial or Open SourceOpen SourceOpen Source infoBSDcommercial infoLimited free edition and free developer edition availablecommercial inforestricted open source version availableOpen Source infoApache Version 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.
Implementation languageC++C++C++
Server operating systemsAndroid
Backend: server-less
iOS
Windows
LinuxLinux
OS X
Solaris
Windows
Linux
macOS
Data schemeyesschema-freeyesschema-freeschema-free
Typing infopredefined data types such as float or dateyesnoyesnono
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.nonoyesnono
Secondary indexesyesnoyesno
SQL infoSupport of SQLnonono infoSplunk Search Processing Language for search commandsnono
APIs and other access methodsC++ API
Java API
HTTP RESTC++ API
Java API
Supported programming languages.Net
Java infowith Android only
Objective-C
React Native
Swift
C
C++
Go
Java
Perl
Python
Ruby
C#
Java
JavaScript
PHP
Python
Ruby
C++
Java
C++
Java
Python
Ruby
Server-side scripts infoStored proceduresno inforuns within the applications so server-side scripts are unnecessarynoyesnono
Triggersyes infoChange Listenersyesnono
Partitioning methods infoMethods for storing different data on different nodesnonehorizontal partitioningShardingnonenone
Replication methods infoMethods for redundantly storing data on multiple nodesnoneyesMulti-source replicationnonenone
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonoyesnono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual ConsistencyImmediate Consistency
Foreign keys infoReferential integritynonononono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACIDyesno infoA 'Transaction' in Splunk has a different meaning: grouping related events into a single one for later searchingno
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyesyesyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes infoIn-Memory realmyesnoyesyes infousing specific database classes
User concepts infoAccess controlyesnoAccess rights for users and rolesnono

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3rd partiesSpeedb: A high performance RocksDB-compliant key-value store optimized for write-intensive workloads.
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More resources
RealmRocksDBSplunkTerarkDBTkrzw infoSuccessor of Tokyo Cabinet and Kyoto Cabinet
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