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DBMS > BoltDB vs. CouchDB vs. Google Search Appliance vs. Postgres-XL vs. RocksDB

System Properties Comparison BoltDB vs. CouchDB vs. Google Search Appliance vs. Postgres-XL vs. RocksDB

Editorial information provided by DB-Engines
NameBoltDB  Xexclude from comparisonCouchDB infostands for "Cluster Of Unreliable Commodity Hardware"  Xexclude from comparisonGoogle Search Appliance  Xexclude from comparisonPostgres-XL  Xexclude from comparisonRocksDB  Xexclude from comparison
DescriptionAn embedded key-value store for Go.A native JSON - document store inspired by Lotus Notes, scalable from globally distributed server-clusters down to mobile phones.The Google Search Appliance consists of hardware and software for indexing documents in local networks.Based on PostgreSQL enhanced with MPP and write-scale-out cluster featuresEmbeddable persistent key-value store optimized for fast storage (flash and RAM)
Primary database modelKey-value storeDocument storeSearch engineRelational DBMSKey-value store
Secondary database modelsDocument store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.48
Rank#212  Overall
#35  Key-value stores
Score18.37
Rank#34  Overall
#5  Document stores
Score2.81
Rank#91  Overall
#10  Search engines
Score0.48
Rank#211  Overall
#101  Relational DBMS
Score2.61
Rank#97  Overall
#18  Key-value stores
Websitegithub.com/­boltdb/­boltcouchdb.apache.orgenterprise.google.com/­search/­products/­gsa.htmlwww.postgres-xl.orgrocksdb.org
Technical documentationdocs.couchdb.org/­en/­stablesupport.google.com/­gsawww.postgres-xl.org/­documentationgithub.com/­facebook/­rocksdb/­wiki
DeveloperApache Software Foundation infoApache top-level project, originally developed by Damien Katz, a former Lotus Notes developerGoogleFacebook, Inc.
Initial release2013200520022014 infosince 2012, originally named StormDB2013
Current release2.3.1, March 201910 R1, October 20186.5.2, November 2019
License infoCommercial or Open SourceOpen Source infoMIT LicenseOpen Source infoApache version 2commercialOpen Source infoMozilla public licenseOpen Source infoBSD
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 languageGoErlangCC++
Server operating systemsBSD
Linux
OS X
Solaris
Windows
Android
BSD
Linux
OS X
Solaris
Windows
Linux
macOS
Data schemeschema-freeschema-freeyesschema-free
Typing infopredefined data types such as float or datenonoyesno
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.nononoyes infoXML type, but no XML query functionalityno
Secondary indexesnoyes infovia viewsyesno
SQL infoSupport of SQLnononoyes infodistributed, parallel query executionno
APIs and other access methodsRESTful HTTP/JSON APIAdministrative API
Browser interface
HTTP API
ADO.NET
JDBC
native C library
ODBC
streaming API for large objects
C++ API
Java API
Supported programming languagesGoC
C#
ColdFusion
Erlang
Haskell
Java
JavaScript
Lisp
Lua
Objective-C
OCaml
Perl
PHP
PL/SQL
Python
Ruby
Smalltalk
.Net
C
C++
Delphi
Erlang
Java
JavaScript (Node.js)
Perl
PHP
Python
Tcl
C++
Java
Server-side scripts infoStored proceduresnoView functions in JavaScriptuser defined functionsno
Triggersnoyesyesno
Partitioning methods infoMethods for storing different data on different nodesnoneSharding infoimproved architecture with release 2.0Shardinghorizontal partitioningnone
Replication methods infoMethods for redundantly storing data on multiple nodesnoneMaster-master replication
Master-slave replication
Master-slave replicationnone
MapReduce infoOffers an API for user-defined Map/Reduce methodsnoyesnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemnoneEventual ConsistencyImmediate Consistency
Foreign keys infoReferential integritynononoyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datayesno infoatomic operations within a single document possibleACID infoMVCCyes
Concurrency infoSupport for concurrent manipulation of datayesyes infostrategy: optimistic lockingyesyesyes
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.nonononoyes
User concepts infoAccess controlnoAccess rights for users can be defined per databaseUser authentication via various security protocolsfine grained access rights according to SQL-standardno

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More resources
BoltDBCouchDB infostands for "Cluster Of Unreliable Commodity Hardware"Google Search AppliancePostgres-XLRocksDB
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