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MongoDB Atlas vs Redis comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Mar 15, 2026

Review summaries and opinions

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

ROI

Sentiment score
7.1
MongoDB Atlas offers cost savings, enhances development efficiency, and improves application performance, crucial for large-scale distributed storage projects.
Sentiment score
7.2
Redis enhances ROI by improving performance, reducing costs, increasing productivity, and ensuring reliable, scalable, and efficient service.
We have seen a return on investment; while we do not have the exact numbers, as it is saving our time and making our development easier, we can easily say the cost is being reduced.
Senior Software Developer at NIT
I find it easy to use.
IT Manager at a government with 11-50 employees
It improved API latency from two seconds to 450 milliseconds for P99.
Senior Software Developer at NIT
We reduced the database read load by around 30 to 40 percent and improved API response time by 20 to 30 percent, specifically for frequently accessed endpoints.
SDE 2 at Virtusa
 

Customer Service

Sentiment score
6.8
MongoDB Atlas support is responsive but costly, with mixed feedback due to delays and reliance on documentation and community.
Sentiment score
5.8
Redis is stable and reliable, with helpful support, strong documentation, and often minimal need for direct assistance.
I have used them sometimes, even recently, and found the feedback to be spot on our needs.
Partner at Red software systems
The features of MongoDB Atlas fall short, resulting in an average rating due to higher-expectation features still lacking in its offerings.
DB Architect / Consultant at Virtusa Global
Most of the issues I encountered, like query performance or indexing, were handled internally through monitoring, optimization, and best practices.
Senior Software Developer at NIT
The documentation and community support for Redis are very strong, making troubleshooting quicker.
Senior Software Developer at NIT
Since Redis is quite stable and well-documented, we have not needed much support, but when required, the response has been helpful.
SDE 2 at Virtusa
 

Scalability Issues

Sentiment score
7.6
MongoDB Atlas is highly scalable, adapting to changing demands, efficiently distributing data, and facilitating seamless expansion for applications.
Sentiment score
7.8
Redis excels in horizontal and vertical scaling, offering clustering, sharding, and compatibility with Azure and AWS for enterprise adaptability.
It's very much scalable, and I would rate scalability a nine.
General Manager at Kaleyra
It supports both vertical scaling and horizontal scaling through sharding, where data is distributed across multiple nodes.
Senior Software Developer at NIT
MongoDB Atlas offers sharding as a scalability feature, although it does not perform as well as Oracle.
DB Architect / Consultant at Virtusa Global
Data migration and changes to application-side configurations are challenging due to the lack of automatic migration tools in a non-clustered legacy system.
Data Engineer at a photography company with 1,001-5,000 employees
I scale Redis horizontally using clustering and sharding, where data is distributed across multiple nodes to handle higher traffic and larger data sets.
Senior Software Developer at NIT
With features such as clustering and replication, it can handle high traffic and a large database very effectively.
SDE 2 at Virtusa
 

Stability Issues

Sentiment score
8.0
Users commend MongoDB Atlas for stability and reliability, despite interface critiques and challenges with OLTP transactions and triggers.
Sentiment score
7.8
Redis is stable, handles heavy loads, offers high availability, and uses persistence mechanisms, making it a trusted choice.
Since it is a managed service, features like replication, automatic failover, and backups are handled by the platform.
Senior Software Developer at NIT
When it comes to OLTP transactions, its performance declines.
DB Architect / Consultant at Virtusa Global
The stability of the product is very high.
General Manager at Kaleyra
Redis is fairly stable.
Data Engineer at a photography company with 1,001-5,000 employees
 

Room For Improvement

Users seek MongoDB Atlas enhancements in data processes, integration, UI, performance, scalability, documentation, and cost efficiency.
Redis users face challenges with scalability, GUI, documentation, security, and seek enhancements in monitoring, analytics, and multi-tenancy features.
Enhancing capabilities for data pipelines and visualization dashboards.
DB Architect / Consultant at Virtusa Global
MongoDB Atlas should support containerization.
General Manager at Kaleyra
The UI is good, although I have checked one aspect in MongoDB Atlas: when we make transactions, they do not process in real-time and require a refresh.
Software Developer at Styx Global
Data persistence and recovery face issues with compatibility across major versions, making upgrades possible but downgrades not active.
Data Engineer at a photography company with 1,001-5,000 employees
Redis itself does not enforce consistency with the primary database, so developers need to carefully design cache invalidation strategies.
Software Engineer at ValueMomentum
One issue is cache invalidation. Keeping cache data consistent with the source of truth can be tricky, especially in distributed systems.
Senior Software Developer at NIT
 

Setup Cost

Enterprise buyers find MongoDB Atlas competitively priced, valuing its pay-as-you-go model, flexibility, and minimal initial setup expense.
Redis pricing depends on memory, cluster size, and infrastructure, with higher costs than SQL due to RAM usage.
For our service, it was around 300 to 600 euros per month, which was acceptable for our customers.
Partner at Red software systems
The price of MongoDB Atlas is reasonable, which is why many organizations, including mine, are opting for it.
DB Architect / Consultant at Virtusa Global
Since we use an open-source version of Redis, we do not experience any setup costs or licensing expenses.
Data Engineer at a photography company with 1,001-5,000 employees
The costs are primarily driven by memory consumption and cluster size, since Redis operates in-memory.
Senior Software Developer at NIT
The pricing is reasonable for the performance provided.
SDE 2 at Virtusa
 

Valuable Features

MongoDB Atlas excels in scalability, security, usability, and efficiency, effectively handling unstructured data and reducing operational costs.
Redis offers low latency, high throughput, and scalability with rich data structures, ideal for real-time applications and caching.
MongoDB Atlas is a fully managed service, meaning it handles deployment, scaling, backup, patching, and maintenance automatically, which allows developers to focus more on application logic instead of infrastructure.
Senior Software Developer at NIT
I find MongoDB Atlas highly scalable and easy to use, with very good support.
Partner at Red software systems
It is particularly useful for unstructured and semi-structured data because of its performance in these areas.
DB Architect / Consultant at Virtusa Global
It functions similarly to a foundational building block in a larger system, enabling native integration and high functionality in core data processes.
Data Engineer at a photography company with 1,001-5,000 employees
First is its in-memory preference, as Redis is extremely fast, making it ideal for caching and session management where low latency is critical.
Software Engineer at ValueMomentum
Real API latency improved from around two seconds to approximately 450 milliseconds for P99.
Senior Software Developer at NIT
 

Categories and Ranking

MongoDB Atlas
Ranking in Managed NoSQL Databases
3rd
Ranking in AI Software Development
6th
Average Rating
8.4
Reviews Sentiment
7.0
Number of Reviews
52
Ranking in other categories
Database as a Service (DBaaS) (3rd), Database Management Systems (DBMS) (3rd)
Redis
Ranking in Managed NoSQL Databases
6th
Ranking in AI Software Development
13th
Average Rating
8.8
Reviews Sentiment
5.9
Number of Reviews
26
Ranking in other categories
NoSQL Databases (4th), In-Memory Data Store Services (1st), Vector Databases (4th)
 

Mindshare comparison

As of May 2026, in the Managed NoSQL Databases category, the mindshare of MongoDB Atlas is 13.9%, up from 6.0% compared to the previous year. The mindshare of Redis is 5.6%, up from 1.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Managed NoSQL Databases Mindshare Distribution
ProductMindshare (%)
MongoDB Atlas13.9%
Redis5.6%
Other80.5%
Managed NoSQL Databases
 

Featured Reviews

Varuns Ug - PeerSpot reviewer
Senior Software Developer at NIT
Flexible document workflows have accelerated schema changes and simplified evolving data models
MongoDB Atlas currently has almost all the features we require, but there are some points where I see certain improvements. One area is cost visibility and optimization. Since pricing is largely based on storage and cluster size, it can sometimes be difficult to predict or optimize cost without deeper insights. More granular cost breakdowns or recommendations would be helpful. Another area I can mention is performance tuning transparency. While MongoDB Atlas provides monitoring and suggestions, debugging deeper issues like slow queries, index efficiency, or shard imbalance can sometimes require more control or visibility. Cost optimization, deeper performance insight, and easier scaling decisions would make MongoDB Atlas even more powerful. A couple of additional areas where MongoDB Atlas could improve are integrations and developer experience. For integrations, while MongoDB Atlas supports major cloud providers and tools, deeper and more seamless integration with observability patterns would make troubleshooting distributed systems easier. On the documentation side, while it is generally good, some advanced topics like sharding strategies, performance tuning, and real-world scaling patterns could benefit from more practical guidance. Additionally, a better local-to-cloud development experience, making it easier to replicate production-like MongoDB Atlas environments locally, would help developers test performance and scaling scenarios more efficiently.
Varuns Ug - PeerSpot reviewer
Senior Software Developer at NIT
Caching has accelerated complex workflows and delivers low latency for high-traffic microservices
A few features of Redis that I use on a day-to-day basis and feel are among the best are extremely low latency and high throughput. Since Redis is in-memory, it makes it ideal for cases such as caching and rate limiting where response time is critical. TTL expiry support is very useful in Redis as it allows me to automatically evict stale data without manual cleanup, which is something I use heavily in my caching strategy. Another point I can mention is that the rich data structures such as strings, hashes, and even sorted sets are very powerful. I have used strings for caching responses and counters, whereas I have used hashes for storing structured objects. One more feature I can tell you about is atomic operations. Redis guarantees atomicity for operations such as incrementing a counter, which is very useful for rate limiting and avoiding race conditions in distributed systems. Finally, I want to emphasize that Redis is easy to scale and integrate, whether through clustering or using a distributed cache across microservices. Redis has impacted my organization positively by providing default support that is very useful. For metrics, in one of my core systems, introducing Redis as a distributed cache helped me achieve around an 80% cache hit rate, which reduced repeated downstream services. Real API latency also improved from around two seconds to approximately 450 milliseconds for P99. It also helped reduce the load on dependent services and databases, which improved overall system reliability.
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Top Industries

By visitors reading reviews
Financial Services Firm
11%
Manufacturing Company
11%
Construction Company
9%
Computer Software Company
7%
Financial Services Firm
24%
Computer Software Company
10%
Comms Service Provider
7%
University
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business25
Midsize Enterprise11
Large Enterprise20
By reviewers
Company SizeCount
Small Business11
Midsize Enterprise6
Large Enterprise10
 

Questions from the Community

What do you like most about MongoDB Atlas?
There are many valuable features, but scalability stands out. It can scale across zones. You can define multiple nodes. They have also partnered with AWS, offering great service with multiple featu...
What is your experience regarding pricing and costs for MongoDB Atlas?
Pricing-wise, MongoDB Atlas has a pay-as-you-go strategy. The documentation for MongoDB is very good; I have learned multiple things through reading it. The free tier is M0 for $0, which is suitabl...
What needs improvement with MongoDB Atlas?
MongoDB Atlas currently has almost all the features we require, but there are some points where I see certain improvements. One area is cost visibility and optimization. Since pricing is largely ba...
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...
What needs improvement with Redis?
Overall, Redis is a powerful and reliable tool, but there are a few areas for improvement. One limitation is that Redis is memory-based, so scaling can become expensive compared to disk-based syste...
What is your primary use case for Redis?
My main use case for Redis is caching frequently accessed data to improve performance and reduce database load. For example, I cache API responses and user-related data so that repeated requests ca...
 

Comparisons

 

Also Known As

Atlas, MongoDB Atlas (pay-as-you-go)
Redis Enterprise
 

Overview

 

Sample Customers

Wells Fargo, Forbes, Ulta Beauty, Bosch, Sanoma, Current (a Digital Bank), ASAP Log, SBB, Zebra Technologies, Radial, Kovai, Eni, Accuhit, Cognigy, and Payload.
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
Find out what your peers are saying about MongoDB Atlas vs. Redis and other solutions. Updated: April 2026.
893,244 professionals have used our research since 2012.