DBMS > MongoDB vs. Redis vs. VoltDB
System Properties Comparison MongoDB vs. Redis vs. VoltDB
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|Editorial information provided by DB-Engines|
|Name||MongoDB Xexclude from comparison||Redis Xexclude from comparison||VoltDB Xexclude from comparison|
|Description||One of the most popular document stores available both as a fully managed cloud service and for deployment on self-managed infrastructure||Popular in-memory data platform used as a cache, message broker, and database that can be deployed on-premises, across clouds, and hybrid environments Redis focuses on performance so most of its design decisions prioritize high performance and very low latencies.||Distributed In-Memory NewSQL RDBMS Used for OLTP applications with a high frequency of relatively simple transactions, that can hold all their data in memory|
|Primary database model||Document store||Key-value store Multiple data types and a rich set of operations, as well as configurable data expiration, eviction and persistence||Relational DBMS|
|Secondary database models||Spatial DBMS|
Search engine integrated Lucene index, currently in MongoDB Atlas only.
Time Series DBMS Time Series Collections introduced in Release 5.0
|Document store with RedisJSON|
Graph DBMS with RedisGraph
Search engine with RediSearch
Time Series DBMS with RedisTimeSeries
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|Developer||MongoDB, Inc||Redis project core team, inspired by Salvatore Sanfilippo Development sponsored by Redis Inc.||VoltDB Inc.|
|Current release||6.0.1, August 2022||7.0.9, February 2023||11.3, April 2022|
|License Commercial or Open Source||Open Source MongoDB Inc.'s Server Side Public License v1. Prior versions were published under GNU AGPL v3.0. Commercial licenses are also available.||Open Source source-available extensions (modules), commercial licenses for Redis Enterprise||Open Source AGPL for Community Edition, commercial license for Enterprise, AWS, and Pro Editions|
|Cloud-based only Only available as a cloud service||no MongoDB available as DBaaS (MongoDB Atlas)||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|ScaleGrid for MongoDB Database: Fully managed hosting for MongoDB Database on a wide variety of cloud providers and On-Premises. Automate your management, scaling and backups through one centralized platform.|
|Implementation language||C++||C||Java, C++|
|Server operating systems||Linux|
Windows ported and maintained by Microsoft Open Technologies, Inc.
OS X for development
|Data scheme||schema-free Although schema-free, documents of the same collection often follow the same structure. Optionally impose all or part of a schema by defining a JSON schema.||schema-free||yes|
|Typing predefined data types such as float or date||yes string, integer, double, decimal, boolean, date, object_id, geospatial||partial Supported data types are strings, hashes, lists, sets and sorted sets, bit arrays, hyperloglogs and geospatial indexes||yes|
|XML support Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.||no|
|Secondary indexes||yes||yes with RediSearch module||yes|
|SQL Support of SQL||Read-only SQL queries via the MongoDB Connector for BI||no||yes only a subset of SQL 99|
|APIs and other access methods||proprietary protocol using JSON||proprietary protocol RESP - REdis Serialization Protocol||Java API|
RESTful HTTP/JSON API
|Supported programming languages||Actionscript unofficial driver|
Clojure unofficial driver
ColdFusion unofficial driver
D unofficial driver
Dart unofficial driver
Delphi unofficial driver
Groovy unofficial driver
Lisp unofficial driver
Lua unofficial driver
MatLab unofficial driver
PowerShell unofficial driver
Prolog unofficial driver
R unofficial driver
Smalltalk unofficial driver
Erlang not officially supported
|Triggers||yes in MongoDB Atlas only||publish/subscribe channels provide some trigger functionality; RedisGears||no|
|Partitioning methods Methods for storing different data on different nodes||Sharding Partitioned by hashed, ranged, or zoned sharding keys. Live resharding allows users to change their shard keys as an online operation with zero downtime.||Sharding Automatic hash-based sharding with support for hash-tags for manual sharding||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||Multi-Source deployments with MongoDB Atlas Global Clusters|
|Multi-source replication with Redis Enterprise Pack|
Source-replica replication Chained replication is supported
|MapReduce Offers an API for user-defined Map/Reduce methods||yes||through RedisGears||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Eventual Consistency|
Immediate Consistency can be individually decided for each write operation
Causal consistency can be enabled in Active-Active databases
Strong consistency with Redis Raft
Strong eventual consistency with Active-Active
|Foreign keys Referential integrity||no typically not used, however similar functionality with DBRef possible||no||no FOREIGN KEY constraints are not supported|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||Multi-document ACID Transactions with snapshot isolation||Atomic execution of command blocks and scripts and optimistic locking||ACID Transactions are executed single-threaded within stored procedures|
|Concurrency Support for concurrent manipulation of data||yes||yes Data access is serialized by the server||yes Data access is serialized by the server|
|Durability Support for making data persistent||yes optional, enabled by default||yes Configurable mechanisms for persistency via snapshots and/or operations logs||yes Snapshots and command logging|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||yes In-memory storage engine introduced with MongoDB version 3.2||yes|
|User concepts Access control||Access rights for users and roles||Access Control Lists (ACLs): redis.io/topics/acl|
LDAP and Role-Based Access Control (RBAC) for Redis Enterprise
Mutual TLS authentication: redis.io/topics/encryption
|Users and roles with access to stored procedures|
|More information provided by the system vendor|
|Specific characteristics||The Redis real-time data platform builds upon the unmatched simplicity and speed...|
|Competitive advantages||Redis Enterprise is a robust in-memory database platform built by the people who...|
|Typical application scenarios||Redis Enterprise is used by large enterprise, startup, and government organizations...|
|Key customers||Verizon, Vodafone, Atlassian, Trip Advisor, Jet.com, Nokia, Samsung, HTC, Docker,...|
|Market metrics||Most launched Docker container per day according to Docker Hub (7.2M launches per...|
|Licensing and pricing models||Redis Enterprise Cloud lets users scale up and down instantly, and pay only for the...|
We invite representatives of system vendors to contact us for updating and extending the system information,
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|CData: Connect to Big Data & NoSQL through standard Drivers.|
Aiven for Redis: Store and access your data quickly and efficiently.
Redisson PRO: The ultra-fast Redis Java Client.
Read the Redis NoSQL benchmark report.
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