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DBMS > Amazon SimpleDB vs. KairosDB vs. LMDB vs. Memcached vs. Splunk

System Properties Comparison Amazon SimpleDB vs. KairosDB vs. LMDB vs. Memcached vs. Splunk

Editorial information provided by DB-Engines
NameAmazon SimpleDB  Xexclude from comparisonKairosDB  Xexclude from comparisonLMDB  Xexclude from comparisonMemcached  Xexclude from comparisonSplunk  Xexclude from comparison
DescriptionHosted simple database service by Amazon, with the data stored in the Amazon Cloud. infoThere is an unrelated product called SimpleDB developed by Edward ScioreDistributed Time Series DBMS based on Cassandra or H2A high performant, light-weight, embedded key-value database libraryIn-memory key-value store, originally intended for cachingAnalytics Platform for Big Data
Primary database modelKey-value storeTime Series DBMSKey-value storeKey-value storeSearch engine
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.89
Rank#128  Overall
#22  Key-value stores
Score0.60
Rank#238  Overall
#20  Time Series DBMS
Score1.94
Rank#120  Overall
#20  Key-value stores
Score16.84
Rank#32  Overall
#4  Key-value stores
Score93.02
Rank#13  Overall
#2  Search engines
Websiteaws.amazon.com/­simpledbgithub.com/­kairosdb/­kairosdbwww.symas.com/­symas-embedded-database-lmdbwww.memcached.orgwww.splunk.com
Technical documentationdocs.aws.amazon.com/­simpledbkairosdb.github.iowww.lmdb.tech/­docgithub.com/­memcached/­memcached/­wikidocs.splunk.com/­Documentation/­Splunk
DeveloperAmazonSymasDanga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournalSplunk Inc.
Initial release20072013201120032003
Current release1.2.2, November 20180.9.32, January 20241.6.29, June 2024
License infoCommercial or Open SourcecommercialOpen Source infoApache 2.0Open SourceOpen Source infoBSD licensecommercial infoLimited free edition and free developer edition available
Cloud-based only infoOnly available as a cloud serviceyesnononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageJavaCC
Server operating systemshostedLinux
OS X
Windows
Linux
Unix
Windows
FreeBSD
Linux
OS X
Unix
Windows
Linux
OS X
Solaris
Windows
Data schemeschema-freeschema-freeschema-freeschema-freeyes
Typing infopredefined data types such as float or datenoyesnoyes
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.nonoyes
Secondary indexesyes infoAll columns are indexed automaticallynononoyes
SQL infoSupport of SQLnonononono infoSplunk Search Processing Language for search commands
APIs and other access methodsRESTful HTTP APIGraphite protocol
HTTP REST
Telnet API
Proprietary protocolHTTP REST
Supported programming languages.Net
C
C++
Erlang
Java
PHP
Python
Ruby
Scala
Java
JavaScript infoNode.js
PHP
Python
.Net
C
C++
Clojure
Go
Haskell
Java
JavaScript (Node.js)
Lisp
Lua
MatLab
Nim
Objective C
OCaml
Perl
PHP
Python
R
Ruby
Rust
Swift
Tcl
.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
C#
Java
JavaScript
PHP
Python
Ruby
Server-side scripts infoStored proceduresnonononoyes
Triggersnonononoyes
Partitioning methods infoMethods for storing different data on different nodesnone infoSharding must be implemented in the applicationSharding infobased on CassandranonenoneSharding
Replication methods infoMethods for redundantly storing data on multiple nodesyesselectable replication factor infobased on Cassandranonenone infoRepcached, a Memcached patch, provides this functionallityMulti-source replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonononoyes
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency
Immediate Consistency infocan be specified for read operations
Eventual Consistency infobased on Cassandra
Immediate Consistency infobased on Cassandra
Immediate ConsistencyEventual Consistency
Foreign keys infoReferential integritynonononono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoConcurrent data updates can be detected by the applicationnoACIDnono infoA 'Transaction' in Splunk has a different meaning: grouping related events into a single one for later searching
Concurrency infoSupport for concurrent manipulation of datayesyesyesyesyes
Durability infoSupport for making data persistentyesyesyesnoyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyesno
User concepts infoAccess controlAccess rights for users and roles can be defined via the AWS Identity and Access Management (IAM)simple password-based access controlnoyes infousing SASL (Simple Authentication and Security Layer) protocolAccess rights for users and roles

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More resources
Amazon SimpleDBKairosDBLMDBMemcachedSplunk
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