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DBMS > Amazon DynamoDB vs. Realm vs. RocksDB

System Properties Comparison Amazon DynamoDB vs. Realm vs. RocksDB

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Editorial information provided by DB-Engines
NameAmazon DynamoDB  Xexclude from comparisonRealm  Xexclude from comparisonRocksDB  Xexclude from comparison
DescriptionHosted, scalable database service by Amazon with the data stored in Amazons cloudA 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)
Primary database modelDocument store
Key-value store
Document storeKey-value store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score69.14
Rank#17  Overall
#2  Document stores
#2  Key-value stores
Score9.38
Rank#43  Overall
#8  Document stores
Score3.43
Rank#92  Overall
#17  Key-value stores
Websiteaws.amazon.com/­dynamodbrealm.iorocksdb.org
Technical documentationdocs.aws.amazon.com/­dynamodbrealm.io/­docsgithub.com/­facebook/­rocksdb/­wiki
DeveloperAmazonRealm, acquired by MongoDB in May 2019Facebook, Inc.
Initial release201220142013
Current release6.14.6 , December 2020
License infoCommercial or Open Sourcecommercial infofree tier for a limited amount of database operationsOpen SourceOpen Source infoBSD
Cloud-based only infoOnly available as a cloud serviceyesnono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageC++
Server operating systemshostedAndroid
Backend: server-less
iOS
Windows
Data schemeschema-freeyesschema-free
Typing infopredefined data types such as float or dateyesyesno
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.nono
Secondary indexesyesyesno
SQL infoSupport of SQLnonono
APIs and other access methodsRESTful HTTP APIC++ API
Java API
Supported programming languages.Net
ColdFusion
Erlang
Groovy
Java
JavaScript
Perl
PHP
Python
Ruby
.Net
Java infowith Android only
Objective-C
React Native
Swift
C++
Java
Server-side scripts infoStored proceduresnono inforuns within the applications so server-side scripts are unnecessaryno
Triggersyes infoby integration with AWS Lambdayes infoChange Listenersno
Partitioning methods infoMethods for storing different data on different nodesShardingnonenone
Replication methods infoMethods for redundantly storing data on multiple nodesyesnonenone
MapReduce infoOffers an API for user-defined Map/Reduce methodsno infomay be implemented via Amazon Elastic MapReduce (Amazon EMR)nono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency
Immediate Consistency infocan be specified for read operations
Immediate Consistency
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataACID infoACID across one or more tables within a single AWS account and regionACIDyes
Concurrency infoSupport for concurrent manipulation of datayesyes
Durability infoSupport for making data persistentyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes infoIn-Memory realmyes
User concepts infoAccess controlAccess rights for users and roles can be defined via the AWS Identity and Access Management (IAM)yesno
More information provided by the system vendor
Amazon DynamoDBRealmRocksDB
Specific characteristicsNow a part of MongoDB Data Platform , Realm Database is the fast, easy to use, and...
» more
Competitive advantagesRealm ensures offline-first functionality, meaning apps run smoothly and deliver...
» more
Typical application scenariosMobile Consumer Apps First-Line Worker Apps
» more
Key customersCathay Pacific Royal Carribbean Cruise Lines Open Source Database powers apps built...
» more
Market metricsUsed by 100,000+ developers 2 bn installs Currently used in 40k+ applications in...
» more
Licensing and pricing modelsRealm database is licensed under the Apache License v2.0.
» more

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and for displaying vendor-provided information such as key customers, competitive advantages and market metrics.

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More resources
Amazon DynamoDBRealmRocksDB
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Recent citations in the news

Amazon Adds SQL Support To DynamoDB
21 December 2020, iProgrammer

Global NoSQL Database Market Top Company Profile: DynamoDB, ObjectLabs Corporation, Skyll, MarkLogic, InfiniteGraph etc.
18 January 2021, Splash Radio Wales

Innovative Spirit Shines at 2021 Scylla User Awards
13 January 2021, StreetInsider.com

ScyllaDB Unveils 'Monstrous' New Capabilities for Its NoSQL Database
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AWS re:Invent 2020: AWS Community Builders Program Top Highlights
20 December 2020, hackernoon.com

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MongoDB Extends Cloud Lineup With New Database Release, Search And Mobile Tools
12 June 2020, CRN: Technology news for channel partners and solution providers

MongoDB Cloud Gives Developers An Escape From Data Silos With First-Ever Unified Cloud-To-Mobile Experience
9 June 2020, PRNewswire

Realm Makes PostgreSQL Real-Time with New Connector
21 March 2017, Database Trends and Applications

Realm Receives Investment from Ericsson Ventures to Advance Development of Edge Computing Solutions
21 September 2017, Business Wire

Realm Platform 2.0 Is Significant Step Forward for Building Responsive and Real-Time Mobile Applications
17 October 2017, Business Wire

provided by Google News

AMD EPYC vs. Intel Xeon Cascadelake With Facebook's RocksDB Database
17 October 2019, Phoronix

Toshiba Memory America Optimizes RocksDB for SSDs
1 August 2019, Business Wire

Micron Announces An Open-Source Storage Engine Designed For SSDs, Persistent Memory
27 April 2020, Phoronix

Toshiba Memory America Highlights TRocksDB at SNIA's 2019 Storage Developer Conference
23 September 2019, Business Wire

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