--- title: Redis 4.0 Reviews meta\_title: 'Redis 4.0 Reviews 2026: Details, Pricing, & Features | G2' meta\_description: Filter reviews by the users' company size, role or industry to find out how Redis 4.0 works for a business like yours. aggregate\_rating: rating\_value: 4.0 review\_count: 2 scale: '5' date\_modified: '2026-05-05' parent\_category: name: Marketplace Apps url: https://www.g2.com/categories/marketplace-apps --- # Redis 4.0 Reviews & Product Details Redis 4.0 is an open-source, in-memory data structure store that functions as a database, cache, and message broker. This version introduces significant enhancements, including a modular architecture for extending functionality, improved caching algorithms, and advanced memory management features. Key Features and Functionality: - Modules API: Allows developers to extend Redis by adding new commands and data types, enabling functionalities like search and neural networks directly within Redis. - Least Frequently Used Eviction Policy: Introduces an LFU algorithm for cache eviction, offering better performance over the traditional Least Recently Used policy by more accurately estimating key access frequency. - Asynchronous Operations: Features commands like `UNLINK` for non-blocking key deletion and `FLUSHDB ASYNC` for asynchronous database clearing, reducing latency during these operations. - Active Memory Defragmentation: Enables Redis to defragment memory while running, improving memory utilization and preventing fragmentation-related performance issues. - Enhanced Memory Management Commands: Introduces the `MEMORY` command suite, providing insights into memory usage and tools for efficient memory management. Primary Value and User Solutions: Redis 4.0 addresses the need for a high-performance, extensible, and efficient in-memory data store. The introduction of the Modules API allows developers to tailor Redis to specific application requirements, enhancing flexibility. Improved caching mechanisms and asynchronous operations reduce latency and increase throughput, making Redis 4.0 suitable for real-time applications. Active memory defragmentation and advanced memory management tools ensure optimal resource utilization, leading to cost savings and improved application stability. * * * Seller [Jetware](https://www.g2.com/sellers/jetware-c6839872-6292-4a7b-973d-ac6da2ceaa45) Discussions [Redis 4.0 Community](https://www.g2.com/products/redis-4-0/discuss) Show More ## Top-Rated Alternatives [ ![WordPress.org](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "WordPress.org") WordPress.org 4.4/5(9,544) ](https://www.g2.com/products/wordpress-org/reviews) [ ![TeamViewer](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "TeamViewer") TeamViewer 4.5/5(4,151) ](https://www.g2.com/products/teamviewer/reviews) [ ![Okta](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Okta") Okta 4.5/5(1,366) ](https://www.g2.com/products/okta/reviews) [ View All Alternatives ](https://www.g2.com/products/redis-4-0/competitors/alternatives) ![arpit a.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "arpit a.") AA arpit a. Senior Software Engineer Mid-Market (51-1000 emp.) 12/16/2021 "It does the needful of caching APIs instead of costly DB calls for a given application server." 3.5/5 What do you like best about Redis 4.0? It is fast, simple, flexible, open-source and stable Review collected by and hosted on G2.com. What do you dislike about Redis 4.0? 1. No failover in absence of atleast one slave 2. Requires huge RAM due to being in-memory Review collected by and hosted on G2.com. Recommendations to others considering Redis 4.0: It is classy, cool and open source. Must try. Review collected by and hosted on G2.com. What problems is Redis 4.0 solving and how is that benefiting you? It does the needful of caching APIs instead of costly DB calls for my given microservices application which I am developing. Biggest benefit is easy to integrate using config in Springboot application with host ip and port. Review collected by and hosted on G2.com. Show More 5/3/2026 Current UserValidated ReviewerIncentivizedSource: G2 invite ![Verified User in Computer Software](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Computer Software") UC Verified User in Computer Software Mid-Market (51-1000 emp.) 3/31/2022 "Redis 4.0 In-Memory Server" 4.5/5 What do you like best about Redis 4.0? It helps in increasing the performance and decreases latency of data access. Review collected by and hosted on G2.com. What do you dislike about Redis 4.0? No SQL usage, and it offers only basic security for access rights at instance level. Review collected by and hosted on G2.com. What problems is Redis 4.0 solving and how is that benefiting you? It helps in increasing the performance and decreases latency of data access. Review collected by and hosted on G2.com. 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