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DBMS > Ehcache vs. mSQL vs. Realm vs. RRDtool

System Properties Comparison Ehcache vs. mSQL vs. Realm vs. RRDtool

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Editorial information provided by DB-Engines
NameEhcache  Xexclude from comparisonmSQL infoMini SQL  Xexclude from comparisonRealm  Xexclude from comparisonRRDtool  Xexclude from comparison
DescriptionA widely adopted Java cache with tiered storage optionsmSQL (Mini SQL) is a simple and lightweight RDBMSA DBMS built for use on mobile devices that’s a fast, easy to use alternative to SQLite and Core DataIndustry standard data logging and graphing tool for time series data. RRD is an acronym for round-robin database. infoThe data is stored in a circular buffer, thus the system storage footprint remains constant over time.
Primary database modelKey-value storeRelational DBMSDocument storeTime Series DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score4.89
Rank#67  Overall
#8  Key-value stores
Score1.27
Rank#167  Overall
#77  Relational DBMS
Score7.60
Rank#52  Overall
#9  Document stores
Score1.87
Rank#136  Overall
#11  Time Series DBMS
Websitewww.ehcache.orghughestech.com.au/­products/­msqlrealm.iooss.oetiker.ch/­rrdtool
Technical documentationwww.ehcache.org/­documentationrealm.io/­docsoss.oetiker.ch/­rrdtool/­doc
DeveloperTerracotta Inc, owned by Software AGHughes TechnologiesRealm, acquired by MongoDB in May 2019Tobias Oetiker
Initial release2009199420141999
Current release3.10.0, March 20224.4, October 20211.8.0, 2022
License infoCommercial or Open SourceOpen Source infoApache Version 2; commercial licenses availablecommercial infofree licenses can be providedOpen SourceOpen Source infoGPL V2 and FLOSS
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.
Implementation languageJavaCC infoImplementations in Java (e.g. RRD4J) and C# available
Server operating systemsAll OS with a Java VMAIX
HP-UX
Linux
OS X
Solaris SPARC/x86
Windows
Android
Backend: server-less
iOS
Windows
HP-UX
Linux
Data schemeschema-freeyesyesyes
Typing infopredefined data types such as float or dateyesyesyesNumeric data only
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.nononono infoExporting into and restoring from XML files possible
Secondary indexesnoyesyesno
SQL infoSupport of SQLnoA subset of ANSI SQL is implemented infono subqueries, aggregate functions, views, foreign keys, triggersnono
APIs and other access methodsJCacheJDBC
ODBC
in-process shared library
Pipes
Supported programming languagesJavaC
C++
Delphi
Java
Perl
PHP
Tcl
.Net
Java infowith Android only
Objective-C
React Native
Swift
C infowith librrd library
C# infowith a different implementation of RRDTool
Java infowith a different implementation of RRDTool
JavaScript (Node.js) infowith a different implementation of RRDTool
Lua
Perl
PHP infowith a wrapper library
Python
Ruby
Server-side scripts infoStored proceduresnonono inforuns within the applications so server-side scripts are unnecessaryno
Triggersyes infoCache Event Listenersnoyes infoChange Listenersno
Partitioning methods infoMethods for storing different data on different nodesSharding infoby using Terracotta Servernonenonenone
Replication methods infoMethods for redundantly storing data on multiple nodesyes infoby using Terracotta Servernonenonenone
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemTunable Consistency (Strong, Eventual, Weak)noneImmediate Consistencynone
Foreign keys infoReferential integritynononono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datayes infosupports JTA and can work as an XA resourcenoACIDno
Concurrency infoSupport for concurrent manipulation of datayesnoyes infoby using the rrdcached daemon
Durability infoSupport for making data persistentyes infousing a tiered cache-storage approachyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesnoyes infoIn-Memory realmyes
User concepts infoAccess controlnonoyesno

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More resources
EhcachemSQL infoMini SQLRealmRRDtool
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