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Faiss vs Redis comparison

Meta and Redis are both solutions in the Vector Databases category. Meta is ranked #5 with an average rating of 8.0, while Redis is ranked #3 with an average rating of 8.8. Meta holds a 5.1% mindshare in VD, compared to Redis’s 5.4% mindshare. Additionally, 100% of Meta users are willing to recommend the solution, compared to 100% of Redis users who would recommend it.
Faiss
Read 3 Faiss reviews
  • 3,588 Views
  • 3,265 Comparison Views
100% willing to recommend
Redis
Read 23 Redis reviews
  • 5,005 Views
  • 2,052 Comparison Views
100% willing to recommend
 

Comparison Buyer's Guide

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Executive SummaryUpdated on Dec 14, 2025

Redis and Faiss are tools in data management and machine learning. Redis has an edge in pricing and support focusing on affordability and service speed, while Faiss offers advanced features for comprehensive capabilities.

Features: Redis offers high-speed data storage, suitable for real-time data access. It is known for its simplicity and scalability, making it ideal for various applications. Faiss provides efficient similarity search features, essential for AI-driven queries with large datasets. Its ability to manage large-scale vector data sets it apart, making it indispensable for advanced machine learning tasks.

Ease of Deployment and Customer Service: Redis provides straightforward deployment with extensive documentation and a responsive support team, enabling a wide range of deployments. Faiss requires a customized installation process, often integrating into machine learning frameworks, which might be more intricate and necessitates specialized skills.

Pricing and ROI: Redis is budget-friendly, offering low setup costs and high ROI for effective data storage needs. Faiss involves a higher initial cost, justified by its specialized features that promise substantial returns for applications requiring sophisticated machine learning capabilities.

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To learn more, read our detailed Faiss vs. Redis Report (Updated: December 2025).
Buyer's Guide
Faiss vs. Redis
December 2025
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Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Faiss
Ranking in Vector Databases
5th
Average Rating
8.0
Reviews Sentiment
3.3
Number of Reviews
3
Ranking in other categories
Open Source Databases (10th)
Redis
Ranking in Vector Databases
3rd
Average Rating
8.8
Reviews Sentiment
5.7
Number of Reviews
23
Ranking in other categories
NoSQL Databases (5th), Managed NoSQL Databases (9th), In-Memory Data Store Services (1st), AI Software Development (17th)
 

Mindshare comparison

As of January 2026, in the Vector Databases category, the mindshare of Faiss is 5.1%, down from 12.3% compared to the previous year. The mindshare of Redis is 5.4%, up from 5.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Vector Databases Market Share Distribution
ProductMarket Share (%)
Redis5.4%
Faiss5.1%
Other89.5%
Vector Databases
 

Featured Reviews

Kalindu Sekarage - PeerSpot reviewer
Kalindu Sekarage
Senior Software Engineer
Integration improves accuracy and supports token-level embedding
The best features FAISS offers for my team include seamless integration with Colbert and the ability to use FAISS via the Ragatouille framework, which is tailor-made for using the Colbert model. Feature-wise, FAISS allows for more accurate result retrieval, and retrieval speed is also good when comparing the index size. Regarding features, I also emphasize that the usability of FAISS is very seamless, particularly its integration with Colbert and Ragatouille. FAISS has positively impacted my organization by helping us increase the accuracy of retrieval documents; when we store documents in token-level embedding, the accuracy will be high. Additionally, we do not need any external server to host FAISS, allowing us to integrate it with our backend framework, making it a very flexible framework.
Read full review
KG
KarimGarchi
Database Admin and Architect at D-EDGE Hospitality Solutions
Performance shines with seamless session caching and minimal configuration
The best features of Redis, from my personal perspective, are the performance, which is very quick, and it's very simple to implement. Since I started using Redis, I feel that the product is saving me some performance tuning time. It's very easy, I have few parameters to tune, and it seems to have performance without a lot of working on the performance, compared to Cassandra, where you have to configure the memory and many other settings. The integration capability of Redis is excellent. Redis is very affordable because it's free.
Read full review

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"The product has better performance and stability compared to one of its competitors."
"I used Faiss as a basic database."
"Redis provides an easy setup and operation process, allowing users to quickly connect and use it without hassle."
"The solution's technical support team is good...The solution's initial setup process was straightforward."
"Since I started using Redis, I feel that the product is saving me some performance tuning time."
"It is particularly efficient for cloud-based storage and operations."
"The product offers fast access to my database."
"Redis is good for distributed caching management."
"The best thing about Redis is its ability to handle large amounts of data without frequently hitting the database. You can store data in temporary memory, especially for high-volume data."
"Redis is better tested and is used by large companies. I haven't found a direct alternative to what Redis offers. Plus, there are a lot of support and learning resources available, which help you use Redis efficiently."
More Redis pros
 

Cons

"It would be beneficial if I could set a parameter and see different query mechanisms being run."
"It could be more accessible for handling larger data sets."
"One of the drawbacks of Faiss is that it works only in-memory. If it could provide separate persistent storage without relying on in-memory, it would reduce the overhead."
"For the PubSub feature, we had to create our own tools to monitor the events."
"If we use a lot of data, it will eventually cost us a lot."
"Redis could be improved by introducing a GUI to display key-value pair database information, as it is currently a CLI tool with no visual representation."
"Redis should have an option to operate without Docker on a local PC."
"Sometimes, we use Redis as a cluster, and the clusters can sometimes suffer some issues and bring some downtime to your application."
"The initial setup of Redis was difficult, with a rating of two or three out of ten."
"There are some features from MongoDB that I would like to see included in Redis to enhance its overall efficiency, such as the ability to perform remote behaviour. MongoDB is more efficient in handling updates than deletions and is quicker in processing updates, but it can be slower regarding deletions. This can sometimes pose a challenge, especially when dealing with large datasets or frequent data manipulations that involve deletions. In such cases, I often rewrite columns or update values instead of directly deleting data, as it can be more efficient."
"The initial setup took some time as our technical team needed to familiarize themselves with Redis."
More Redis cons
 

Pricing and Cost Advice

"Faiss is an open-source solution."
"It is an open-source tool."
"Redis is an open-source solution. There are not any hidden fees."
"The tool is open-source. There are no additional costs."
"We saw an ROI. It made the processing of our transactions faster."
"Redis is an open-source product."
"Redis is not an overpriced solution."
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Top Industries

By visitors reading reviews
Computer Software Company
15%
Financial Services Firm
14%
Manufacturing Company
9%
Comms Service Provider
8%
Financial Services Firm
26%
Computer Software Company
10%
Comms Service Provider
8%
University
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business11
Midsize Enterprise3
Large Enterprise8
 

Questions from the Community

What do you like most about Faiss?
I used Faiss as a basic database.
See all answers
What is your experience regarding pricing and costs for Faiss?
I did not purchase FAISS through the AWS Marketplace because FAISS is an open-source product. My experience with pricing, setup cost, and licensing is straightforward, as there is no cost for acqui...
See all answers
What needs improvement with Faiss?
I currently do not think there is anything to be improved based on our experience, as Faiss performs as we expected for our workflow. I would like to see improvement in the fact that FAISS currentl...
See all answers
What do you like most about Redis?
Redis is better tested and is used by large companies. I haven't found a direct alternative to what Redis offers. Plus, there are a lot of support and learning resources available, which help you u...
See all answers
What needs improvement with Redis?
The disadvantage of Redis is that it's a little bit hard to have too many clusters or too many nodes and create the clusters. The sync between the nodes is easier to implement with Couchbase, for e...
See all answers
What is your primary use case for Redis?
Redis is used for a part of a booking engine for travel, specifically for the front part to get some sessions and information about the sessions. If a customer or user is using the sites in differe...
See all answers
 

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Compared 7% of the time
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MongoDB Enterprise Advanced vs Faiss
Compared 7% of the time
Chroma vs Faiss Logo
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Compared 7% of the time
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Oracle Coherence vs Redis
Compared 8% of the time
Upstash vs Redis Logo
Upstash vs Redis
Compared 7% of the time
Red Hat Data Grid vs Redis Logo
Red Hat Data Grid vs Redis
Compared 7% of the time
Chroma vs Redis Logo
Chroma vs Redis
Compared 6% of the time
Azure Cache for Redis vs Redis Logo
Azure Cache for Redis vs Redis
Compared 3% of the time
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Product Reports

Buyer's Guide
Open Source Databases
January 2026
Faiss reportDownload Faiss product report
Buyer's Guide
Redis
January 2026
Redis reportDownload Redis product report
 

Also Known As

No data available
Redis Enterprise
 

Overview

Faiss is a powerful library for efficient similarity search and nearest neighbor retrieval in large-scale datasets. It is widely used in image and text processing, recommendation systems, and natural language processing. 

Users appreciate its speed, scalability, and ability to handle high-dimensional data effectively. Faiss also offers easy integration and extensive support for different programming languages. 

Its valuable features include efficient search capabilities, support for large-scale datasets, various similarity measures, easy integration, and comprehensive documentation and community support.

Meta

Redis offers high-speed, in-memory storage, renowned for real-time performance. It supports quick data retrieval and is used commonly in applications like analytics and gaming.

Renowned for real-time performance, Redis delivers high-speed in-memory storage, making it a favorite for applications needing quick data retrieval. Its diverse data structures and caching capabilities support a broad array of use cases, including analytics and gaming. Redis ensures robust scalability with master-slave replication and clustering, while its publish/subscribe pattern renders it reliable for event-driven applications. The solution integrates smoothly with existing systems, minimizing performance tuning needs. Although documentation on scalability and security could be improved, Redis remains cost-effective and stable, commonly utilized in cloud environments. Enhancing integration with cloud services like AWS and Google Cloud and refining GUI may improve usability.

What are the key features of Redis?
  • High Speed: In-memory data storage for swift access.
  • Scalability: Master-slave replication and clustering for growth.
  • Data Structures: Supports diverse types for varied uses.
  • Persistence: RDB snapshots and AOF logs ensure durability.
  • Integration: Seamless integration reduces tuning efforts.
What should users look for in Redis reviews?
  • Performance: Real-time data retrieval boosts efficiency.
  • Cost-Effectiveness: Stable, budget-friendly implementation.
  • Versatility: Suitable for diverse environments and platforms.
  • Reliability: Ensures data persistence and high availability.

Redis finds application across industries for tasks like caching to improve application performance and speed, minimizing database load. It enables real-time processing for session storage, push notifications, and analytics. As a messaging platform, Redis handles high traffic and supports replication and clustering for cross-platform scalability.

Redis
 

Sample Customers

1. Facebook 2. Airbnb 3. Pinterest 4. Twitter 5. Microsoft 6. Uber 7. LinkedIn 8. Netflix 9. Spotify 10. Adobe 11. eBay 12. Dropbox 13. Yelp 14. Salesforce 15. IBM 16. Intel 17. Nvidia 18. Qualcomm 19. Samsung 20. Sony 21. Tencent 22. Alibaba 23. Baidu 24. JD.com 25. Rakuten 26. Zillow 27. Booking.com 28. Expedia 29. TripAdvisor 30. Rakuten 31. Rakuten Viber 32. Rakuten Ichiba
1. Twitter 2. GitHub 3. StackOverflow 4. Pinterest 5. Snapchat 6. Craigslist 7. Digg 8. Weibo 9. Airbnb 10. Uber 11. Slack 12. Trello 13. Shopify 14. Coursera 15. Medium 16. Twitch 17. Foursquare 18. Meetup 19. Kickstarter 20. Docker 21. Heroku 22. Bitbucket 23. Groupon 24. Flipboard 25. SoundCloud 26. BuzzFeed 27. Disqus 28. The New York Times 29. Walmart 30. Nike 31. Sony 32. Philips
Buyer's Guide
Faiss vs. Redis
December 2025
Free Report: Faiss vs. Redis
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