DB-EnginesInfluxDB download bannerEnglish
Deutsch
Knowledge Base of Relational and NoSQL Database Management Systemsprovided by solid IT

DBMS > LevelDB vs. Microsoft Azure Search vs. Realm vs. Redis

System Properties Comparison LevelDB vs. Microsoft Azure Search vs. Realm vs. Redis

Please select another system to include it in the comparison.

Editorial information provided by DB-Engines
NameLevelDB  Xexclude from comparisonMicrosoft Azure Search  Xexclude from comparisonRealm  Xexclude from comparisonRedis  Xexclude from comparison
DescriptionEmbeddable fast key-value storage library that provides an ordered mapping from string keys to string valuesSearch-as-a-service for web and mobile app developmentA DBMS built for use on mobile devices that’s a fast, easy to use alternative to SQLite and Core DataIn-memory data structure store, used as database, cache and message broker infoRedis focuses on performance so most of its design decisions prioritize high performance and very low latencies.
Primary database modelKey-value storeSearch engineDocument storeKey-value store infoMultiple data types and a rich set of operations, as well as configurable data expiration, eviction and persistence
Secondary database modelsDocument store infowith Redis Modules
Graph DBMS infowith Redis Modules
Search engine infowith Redis Modules
Time Series DBMS infowith Redis Modules
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.88
Rank#88  Overall
#16  Key-value stores
Score6.34
Rank#55  Overall
#6  Search engines
Score9.47
Rank#44  Overall
#8  Document stores
Score147.58
Rank#8  Overall
#1  Key-value stores
Websitegithub.com/­google/­leveldbazure.microsoft.com/­en-us/­services/­searchrealm.ioredis.io
Technical documentationgithub.com/­google/­leveldb/­blob/­master/­doc/­index.mddocs.microsoft.com/­en-us/­azure/­searchrealm.io/­docsredis.io/­documentation
DeveloperGoogleMicrosoftRealm, acquired by MongoDB in May 2019Salvatore Sanfilippo infoDevelopment sponsored by Redis Labs
Initial release2011201520142009
Current release1.22, May 2019V15.0.8, March 2020
License infoCommercial or Open SourceOpen Source infoBSDcommercialOpen SourceOpen Source infoBSD 3-Clause, commercial license available
Cloud-based only infoOnly available as a cloud servicenoyesnono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageC++C
Server operating systemsIllumos
Linux
OS X
Windows
hostedAndroid
Backend: server-less
iOS
Windows
BSD
Linux
OS X
Windows infoported and maintained by Microsoft Open Technologies, Inc.
Data schemeschema-freeyesyesschema-free
Typing infopredefined data types such as float or datenoyesyespartial infoSupported data types are strings, hashes, lists, sets and sorted sets, bit arrays, hyperloglogs and geospatial indexes
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
Secondary indexesnoyesyesyes infowith RediSearch module
SQL infoSupport of SQLnononono
APIs and other access methodsRESTful HTTP APIproprietary protocol infoRESP - REdis Serialization Protocol
Supported programming languagesC++
Go
Java info3rd party binding
JavaScript (Node.js) info3rd party binding
Python info3rd party binding
.Net
C#
.Net
Java infowith Android only
Objective-C
React Native
Swift
C
C#
C++
Clojure
Crystal
D
Dart
Elixir
Erlang
Fancy
Go
Haskell
Haxe
Java
JavaScript (Node.js)
Lisp
Lua
MatLab
Objective-C
OCaml
Pascal
Perl
PHP
Prolog
Pure Data
Python
R
Rebol
Ruby
Rust
Scala
Scheme
Smalltalk
Swift
Tcl
Visual Basic
Server-side scripts infoStored proceduresnonono inforuns within the applications so server-side scripts are unnecessaryLua
Triggersnonoyes infoChange Listenersno
Partitioning methods infoMethods for storing different data on different nodesnoneSharding infoImplicit feature of the cloud servicenoneSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnoneyes infoImplicit feature of the cloud servicenoneMaster-slave replication infoChained replication is supported
Multi-master replication infowith Redis Enterprise Pack
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyImmediate ConsistencyEventual Consistency
Strong eventual consistency with CRDTs
Foreign keys infoReferential integritynononono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanonoACIDOptimistic locking, atomic execution of commands blocks and scripts
Concurrency infoSupport for concurrent manipulation of datayesyesyes infoData access is serialized by the server
Durability infoSupport for making data persistentyes infowith automatic compression on writesyesyesyes infoConfigurable mechanisms for persistency via snapshots and/or operations logs
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyes infoIn-Memory realmyes
User concepts infoAccess controlnoyes infousing Azure authenticationyesSimple password-based access control infoAccess control lists and SSL are available in the commercial version
More information provided by the system vendor
LevelDBMicrosoft Azure SearchRealmRedis
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

We invite representatives of system vendors to contact us for updating and extending the system information,
and for displaying vendor-provided information such as key customers, competitive advantages and market metrics.

Related products and services
3rd partiesScaleGrid: Fully managed Redis-as-a-Service in the cloud.
» more

CData: Connect to Big Data & NoSQL through standard Drivers.
» more

We invite representatives of vendors of related products to contact us for presenting information about their offerings here.

More resources
LevelDBMicrosoft Azure SearchRealmRedis
DB-Engines blog posts

Cloud-based DBMS's popularity grows at high rates
12 December 2019, Paul Andlinger

show all

MySQL, PostgreSQL and Redis are the winners of the March ranking
2 March 2016, Paul Andlinger

show all

PostgreSQL is the DBMS of the Year 2018
2 January 2019, Paul Andlinger, Matthias Gelbmann

MySQL, PostgreSQL and Redis are the winners of the March ranking
2 March 2016, Paul Andlinger

MongoDB is the DBMS of the year, defending the title from last year
7 January 2015, Paul Andlinger, Matthias Gelbmann

show all

Recent citations in the news

9 Ways Database Technology Gives Your Applications an Edge
26 March 2020, TechNative

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

Facebook’s database engineering team wants to help you
21 November 2013, VentureBeat

NEL releases modified neo-cli node with custom plugin for faster synchronization
2 April 2019, NEO News Today

Samsung Announces Standards-Compliant Key-Value SSD Prototype
5 September 2019, AnandTech

provided by Google News

Cognitive Search - Azure Search with AI | Azure Friday - Microsoft
6 September 2019, Channel 9

Knowledge Mining with Azure Search | AI Show - Microsoft
8 October 2019, Channel 9

Knowledge mining using the knowledge store feature of Azure Search - Microsoft
17 September 2019, Channel 9

Azure Cognitive Search brings knowledge mining to the enterprise
21 November 2019, SDTimes.com

How to use Azure Search in .Net
23 April 2018, InfoWorld

provided by Google News

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

Realm Empowers Mobile Developers to Tap Into Serverless Development to Build Collaborative and Realtime Experiences
23 May 2017, Business Wire

Kotlin Programming Language Will Surpass Java On Android Next Year
15 October 2017, Fossbytes

Q&A with Ed Lee on RAID, Virtualization-Aware Storage
15 August 2012, Virtualization Review

Box Introduces the Box File Collaboration API
24 December 2016, ProgrammableWeb

provided by Google News

7 Google Cloud database options to free up your IT team
27 March 2020, TechTarget

Cloud Database and DBaaS Industry Insights, 2020-2025 - Featuring Use Cases of Redis Labs, Neo4j and DataStax
5 March 2020, PRNewswire

OVHcloud's Harbor Kubernetes Operator Becomes Part of CNCF's goharbor Project
28 March 2020, InfoQ.com

$24.8 Billion Cloud Database and DBaaS Market by Database Type, Component, Service, Deployment Model, Organization Size, Vertical and Region - Global Forecast to 2025
4 March 2020, GlobeNewswire

Database Automation Market to See Significant Growth by 2026 Profiling Players | IDERA, SAP, Chef, Redis Labs, NuoDB, TestingWhiz, Puppet, Clustrix, and MemSQL and More
27 March 2020, Galus Australis

provided by Google News

Job opportunities

Backend Engineer
Beyondsoft Consulting, Bellevue, WA

Full Stack .Net (Microservices Azure)
Tiger Lilies Consulting, New York, NY

Director of Engineering (.NET/Azure)
Tiger Lilies Consulting, New York, NY

Sitecore Architect
Essani International LLC, New York, NY

.Net (Microservices) Development Manager
Tiger Lilies Consulting, New York, NY

SOLR Developer
Mythrii Consulting LLC, Framingham, MA

Software Engineer, iOS
Warner Bros. Entertainment Group, Philadelphia, PA

Software Engineer, iOS - New York
Lyft, New York, NY

Software Engineer, iOS - San Francisco
Lyft, San Francisco, CA

Database Specialist Curriculum Developer
Red Hat Software, Remote

Database Administrator
Little Caesars, Detroit, MI

Python Developer - Django & Flask
Resolve Tech Solutions Inc., Dallas, TX

Full-Stack Developer (node.js / react.js)
Perito Systems Inc, Woodlawn, MD

Systems Administrator (Remote, United States)
Gaggle Net, Inc., Remote

jobs by Indeed




Share this page

Featured Products

MariaDB logo

How do MariaDB, Oracle MySQL and EnterpriseDB compare?
Get the white paper to
learn more.

Datastax Luna logo

Simple, subscription-based support for open source
Apache Cassandra™ from the Cassandra experts.
Learn more.

AllegroGraph logo

Graph Database Leader for AI Knowledge Graph Applications - The Most Secure Graph Database Available.
Free Download

Neo4j logo

Get your free copy of the new O'Reilly book Graph Algorithms with 20+ examples for
machine learning, graph analytics and more.

Couchbase logo

SQL + JSON + NoSQL.
Power, flexibility & scale.
All open source.
Get started now.

Present your product here