Hazelcast Platform vs Redis comparison

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Hazelcast Platform

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Executive SummaryUpdated on Mar 15, 2026

Hazelcast Platform and Redis are competing in the in-memory data processing space. While Hazelcast is noted for support and flexible pricing, Redis has the upper hand with its robust feature set.

Features: Hazelcast Platform offers distributed in-memory data processing, enabling high scalability and resilience. It provides real-time analytics and machine learning capabilities. Redis, with its simplicity and speed, supports various data structures and delivers high throughput with low latency.

Ease of Deployment and Customer Service: Redis is known for straightforward deployment options, including cloud services and extensive documentation. Hazelcast's deployment may be more complex, but it is supported by comprehensive customer service.

Pricing and ROI: Hazelcast provides flexible licensing models, ideal for varied scale requirements, often leading to favorable ROI in analytical use cases. Redis, being open-source, reduces initial setup costs, offering budget-friendly solutions and long-term savings through its performance.

To learn more, read our detailed In-Memory Data Store Services Report (Updated: May 2026).

In-Memory Data Store Services

May 2026

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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

Hazelcast Platform

Ranking in In-Memory Data Store Services

5th

Average Rating

8.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Redis

Ranking in In-Memory Data Store Services

1st

Average Rating

8.8

Reviews Sentiment

5.9

Number of Reviews

Ranking in other categories

NoSQL Databases (3rd), Managed NoSQL Databases (6th), Vector Databases (2nd), AI Software Development (12th)

Mindshare comparison

As of June 2026, in the In-Memory Data Store Services category, the mindshare of Hazelcast Platform is 10.7%, up from 2.9% compared to the previous year. The mindshare of Redis is 21.6%, up from 17.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.

In-Memory Data Store Services Mindshare Distribution
Product	Mindshare (%)
Redis	21.6%
Hazelcast Platform	10.7%
Other	67.7%

In-Memory Data Store Services

Featured Reviews

Pamahesh Pamahesh

Director of Engineering at Visa

Distributed caching has reduced latency and now supports real-time stream processing

I think there are areas where Hazelcast Platform can improve, such as simplifying the cluster topology and sizing rules because they are still somewhat complex for someone new to Hazelcast. Understanding how the cluster topology forms and sizing rules work, such as partition balancing and traffic routing, should be much simpler. If one node has less RAM or a slightly slower CPU, it creates a cluster-wide performance bottleneck, which is critical, especially with transactional systems. Even though Hazelcast Platform has proven to be better, there can still be bottlenecks if the cluster topology and data partitioning are not easily understood. I also think that object handling and streamlined serialization should be prioritized; using standard Java serialization can be extremely slow. Providing native ultra-fast binary serialization out of the box, without requiring developers to write custom adapters, would be a significant improvement. It would be great if there were ready-to-use adapters for streamlined serialization and object handling.

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Varuns Ug

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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Quotes from Members

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

Pros

"There have definitely been a lot more latency reductions and better SLA performance since using Hazelcast Platform, resulting in faster time to market overall for new features and capabilities because the architecture has become simpler."

"Redis is a powerful and reliable tool for improving application performance."

"Redis is a simple, powerful, and fast solution."

"The most valuable features of Redis are its ease of use and speed. It does not have access to the disc and it is fast."

"Redis acts as an in-memory search tool that improves the speed of operations, allowing for quicker data retrieval and enhancing the performance of applications."

"Overall, my experience with Redis has been very positive, and it has played a key role in improving performance, scalability, and system responsiveness in our back-end system."

"The solution is fast, provides good performance, and is not too expensive."

"Redis is a simple service that does what it promises."

"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."

More Redis pros

Cons

"If one node has less RAM or a slightly slower CPU, it creates a cluster-wide performance bottleneck, which is critical, especially with transactional systems."

"If we use a lot of data, it will eventually cost us a lot."

"There are some points where I feel Redis can be improved."

"Sometimes, we use Redis as a cluster, and the clusters can sometimes suffer some issues and bring some downtime to your application."

"The tool should improve by increasing its size limits and handling dynamic data better. We use the client ID or associate it with a key for static content. The solution will not be easy for a beginner. Unless you understand SQL data, it will be difficult to understand and use Redis. It also needs to be user-friendly."

"Redis should have an option to operate without Docker on a local PC."

"The initial setup took some time as our technical team needed to familiarize themselves with Redis."

"Redis could improve its efficiency in handling locally stored data, not just Amazon Cloud or Google Cloud."

"There is a lack of documentation on the scalability of the solution."

More Redis cons

Pricing and Cost Advice

Information not available

"Redis is an open-source product."

"We saw an ROI. It made the processing of our transactions faster."

"Redis is not an overpriced solution."

"Redis is an open-source solution. There are not any hidden fees."

"The tool is open-source. There are no additional costs."

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Top Industries

By visitors reading reviews

No data available

Financial Services Firm

24%

Computer Software Company

10%

University

Comms Service Provider

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

By reviewers
Company Size	Count
Small Business	11
Midsize Enterprise	6
Large Enterprise	10

Questions from the Community

What needs improvement with Hazelcast Platform?

What is your primary use case for Hazelcast Platform?

My main use case for Hazelcast Platform is to build distributed cache systems across different services that we have. The biggest use is the caching. Additionally, from time to time, we use this fo...

What advice do you have for others considering Hazelcast Platform?

My advice for others looking into using Hazelcast Platform is to study the architecture and data modeling thoroughly. Choosing the right topology for the application or platform is crucial when usi...

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...

What advice do you have for others considering Redis?

My main advice for those looking into using Redis is to focus on the use case; Redis excels where low latency is critical, such as caching, session management, or real-time features, rather than us...

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Product Reports

In-Memory Data Store Services

May 2026

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June 2026

Also Known As

No data available

Redis Enterprise

Overview

Hazelcast Platform provides a real-time, cloud-native data processing environment that excels in handling high-velocity data. Its architecture supports complex event processing and strong integration, making it suitable for dynamic and fast-paced tech landscapes.

Designed for scalable performance, Hazelcast Platform offers an in-memory computing solution that optimizes data-driven operations. Its architecture simplifies distributed processing, making it essential for applications that demand high-speed data transactions and low-latency access. Typical use cases include financial services processing, operational reporting, and enhancing application responsiveness. By enabling seamless scaling, it addresses requirements for processing large volumes of data in distributed environments, particularly in cloud and on-premises deployments.

What are the key features?

In-Memory Data Grid: Provides fast data access and processing by storing data in-memory.
Event Stream Processing: Captures and processes real-time data streams efficiently.
Scalability: Dynamically scales to meet workload demands.
Fault Tolerance: Ensures reliability with built-in redundancy and recovery mechanisms.

What benefits and ROI should users consider?

Enhanced Performance: Delivers real-time processing capabilities for quick data insights.
Cost Efficiency: Optimizes resources with its scalable architecture, reducing overhead costs.
Operational Agility: Adapts rapidly to changing transactional volumes and requirements.

In the finance industry, Hazelcast Platform supports real-time trade analysis, fraud detection, and risk management enhancements. In e-commerce, it powers personalized user experiences through instantaneous inventory tracking and customer interaction data analysis. Its adaptability makes it a versatile choice for integrated solutions across industries.

Hazelcast

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.

Sample Customers

British Gas, Airbus Defense, Ellie Mae, Gamesys

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