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DBMS > Amazon CloudSearch vs. Derby vs. DolphinDB vs. Memcached

System Properties Comparison Amazon CloudSearch vs. Derby vs. DolphinDB vs. Memcached

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Editorial information provided by DB-Engines
NameAmazon CloudSearch  Xexclude from comparisonDerby infooften called Apache Derby, originally IBM Cloudscape; contained in the Java SDK as JavaDB  Xexclude from comparisonDolphinDB  Xexclude from comparisonMemcached  Xexclude from comparison
DescriptionA hosted search engine service by Amazon with the data stored in Amazons cloudFull-featured RDBMS with a small footprint, either embedded into a Java application or used as a database server.DolphinDB is a high performance Time Series DBMS. It is integrated with an easy-to-use fully featured programming language and a high-volume high-velocity streaming analytics system. It offers operational simplicity, scalability, fault tolerance, and concurrency.In-memory key-value store, originally intended for caching
Primary database modelSearch engineRelational DBMSTime Series DBMSKey-value store
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score1.85
Rank#137  Overall
#12  Search engines
Score4.71
Rank#69  Overall
#37  Relational DBMS
Score4.13
Rank#80  Overall
#6  Time Series DBMS
Score19.42
Rank#32  Overall
#4  Key-value stores
Websiteaws.amazon.com/­cloudsearchdb.apache.org/­derbywww.dolphindb.comwww.memcached.org
Technical documentationdocs.aws.amazon.com/­cloudsearchdb.apache.org/­derby/­manuals/­index.htmldocs.dolphindb.cn/­en/­help200/­index.htmlgithub.com/­memcached/­memcached/­wiki
DeveloperAmazonApache Software FoundationDolphinDB, IncDanga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournal
Initial release2012199720182003
Current release10.17.1.0, November 2023v2.00.4, January 20221.6.25, March 2024
License infoCommercial or Open SourcecommercialOpen Source infoApache version 2commercial infofree community version availableOpen Source infoBSD license
Cloud-based only infoOnly available as a cloud serviceyesnonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaC++C
Server operating systemshostedAll OS with a Java VMLinux
Windows
FreeBSD
Linux
OS X
Unix
Windows
Data schemeyesyesyesschema-free
Typing infopredefined data types such as float or dateyesyesyesno
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.yesno
Secondary indexesyes infoall search fields are automatically indexedyesyesno
SQL infoSupport of SQLnoyesSQL-like query languageno
APIs and other access methodsHTTP APIJDBCJDBC
JSON over HTTP
Kafka
MQTT (Message Queue Telemetry Transport)
ODBC
OPC DA
OPC UA
RabbitMQ
WebSocket
Proprietary protocol
Supported programming languagesJavaC#
C++
Go
Java
JavaScript
MatLab
Python
R
Rust
.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
Server-side scripts infoStored proceduresnoJava Stored Proceduresyesno
Triggersnoyesnono
Partitioning methods infoMethods for storing different data on different nodesyes infoautomatic partitioning across Amazon Search Instance as requirednonehorizontal partitioningnone
Replication methods infoMethods for redundantly storing data on multiple nodesyes infomanaged transparently by AWSSource-replica replicationyesnone infoRepcached, a Memcached patch, provides this functionallity
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonoyesno
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynoyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDyesno
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyesyesyesno
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyes
User concepts infoAccess controlauthentication via encrypted signaturesfine grained access rights according to SQL-standardAdministrators, Users, Groupsyes infousing SASL (Simple Authentication and Security Layer) protocol

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More resources
Amazon CloudSearchDerby infooften called Apache Derby, originally IBM Cloudscape; contained in the Java SDK as JavaDBDolphinDBMemcached
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