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Redis™*

Redis™*

Overview

What is Redis™*?

Redis is an open source in-memory data structure server and NoSQL database.

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Recent Reviews

TrustRadius Insights

Redis has proven itself to be an invaluable tool in a wide range of use cases. Users have found Redis to be exceptional as an efficient …
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Set up & forget

7 out of 10
May 08, 2021
Incentivized
We use it to manage & control user sessions in a Tomcat based web application programmed with Java. It's used in both production and …
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Redis Review

9 out of 10
February 03, 2020
Incentivized
Redis has been a vital component in our design, it's usage is mainly for caching API requests, but it also extends to other applications …
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Redis is awesome!

9 out of 10
November 23, 2019
Incentivized
We're using Redis in many ways and across different departments in the organization. The most simple use case is to store locks so the …
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Awards

Products that are considered exceptional by their customers based on a variety of criteria win TrustRadius awards. Learn more about the types of TrustRadius awards to make the best purchase decision. More about TrustRadius Awards

Popular Features

View all 7 features
  • Performance (69)
    10.0
    100%
  • Scalability (69)
    9.4
    94%
  • Availability (69)
    9.0
    90%
  • Concurrency (68)
    9.0
    90%

Reviewer Pros & Cons

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Pricing

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Cloud

$388.00

On Premise
per month

Entry-level set up fee?

  • Setup fee optional
For the latest information on pricing, visithttps://redislabs.com/pricing

Offerings

  • Free Trial
  • Free/Freemium Version
  • Premium Consulting/Integration Services
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Features

NoSQL Databases

NoSQL databases are designed to be used across large distrusted systems. They are notably much more scalable and much faster and handling very large data loads than traditional relational databases.

9.2
Avg 8.8
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Product Details

What is Redis™*?

According to the vendor, Redis is an in-memory multi-model database that supports multiple data structures such as strings, hashes, lists, sets, sorted sets with range queries, bitmaps, hyperloglogs and geospatial indexes with radius queries. Redis has built-in replication, Lua scripting, LRU eviction, transactions and different levels of on-disk persistence, and provides high availability and automatic partitioning with Redis Cluster.

Redis combines in-memory, schema-less design with optimized data structures and versatile modules that adapt to your data needs. The result is an adept, high performance, multi-purpose database that scales easily like a simple key/value data store but delivers sophisticated functionality with great simplicity, according to the vendor.

Redis also enables data persistence and high availability through replication and backups. Redis Enterprise is built from the ground up to serve as a system of record for any application.

*Redis is a trademark of Redis Ltd. Any rights therein are reserved to Redis Ltd. Any use by TrustRadius is for referential purposes only and does not indicate any sponsorship, endorsement or affiliation between Redis and TrustRadius.

Redis™* Features

NoSQL Databases Features

  • Supported: Performance
  • Supported: Availability
  • Supported: Concurrency
  • Supported: Security
  • Supported: Scalability
  • Supported: Data model flexibility
  • Supported: Deployment model flexibility

Additional Features

  • Supported: Integrated modules
  • Supported: Active-Passive Geo Distribution
  • Supported: Cluster Architecture
  • Supported: Linear Scaling
  • Supported: Durability
  • Supported: Backup and Disaster Recovery
  • Supported: Reliability

Redis™* Screenshots

Screenshot of Screenshot of Screenshot of Screenshot of Screenshot of Screenshot of

Redis™* Video

Why Redis?

Redis™* Integrations

Redis™* Technical Details

Deployment TypesOn-premise, Software as a Service (SaaS), Cloud, or Web-Based
Operating SystemsWindows, Linux, Mac
Mobile ApplicationApple iOS, Android, Windows Phone, Blackberry, Mobile Web
Supported CountriesGlobal
Supported Languageshttps://redis.io/clients

Frequently Asked Questions

Redis is an open source in-memory data structure server and NoSQL database.

MongoDB, Amazon ElastiCache, and Couchbase Server are common alternatives for Redis™*.

Reviewers rate Performance highest, with a score of 10.

The most common users of Redis™* are from Mid-sized Companies (51-1,000 employees).
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Comparisons

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Reviews and Ratings

(224)

Community Insights

TrustRadius Insights are summaries of user sentiment data from TrustRadius reviews and, when necessary, 3rd-party data sources. Have feedback on this content? Let us know!

Redis has proven itself to be an invaluable tool in a wide range of use cases. Users have found Redis to be exceptional as an efficient caching solution, allowing for the distribution of data and storage of web sessions. This capability has led to significant improvements in performance and reliability, making it a go-to choice for many backend development teams. Additionally, Redis's versatility as a NoSQL key-based database store has made it a preferred option for organizations working alongside other databases like PostgreSQL and Memcache. Its ease of use, stability, and reliability have made it a popular choice across multiple departments within organizations.

Furthermore, Redis has been leveraged in various R&D projects to experiment with its implementation in different modules. Starting with cache management, users have been able to extend its usage to address specific project needs effectively. In these experiments, Redis has served as a traditional in-memory key store warehouse for cache systems with a vast number of items, resulting in substantial latency savings. Its ability to manage distributed queues efficiently has also made Redis an excellent choice for tasks that require multiple worker nodes to subscribe and complete tasks. The flexibility Redis offers by enabling users to store sets of object-based information and lists further improves performance through set operations.

In addition to these use cases, Redis has become synonymous with simplicity and speed when it comes to basic yet fast key-value storage solutions. It has been extensively adopted in organizations, including game studios, where it is used for storing user data, session data, game data, and indexing information. For example, Redis Enterprise has been utilized to support backend systems for casual games by providing sub-millisecond response times and facilitating clustering, sharding, backups, and monitoring.

Moreover, customers have found Redis instrumental in addressing various challenges such as big data processing, handling temporal data, managing session state, and even as a caching service in microservices environments. Its ability to provide data consistency, concurrency management, and high-speed operations has proven invaluable. Additionally, Redis has been a reliable tool for caching solutions in e-commerce storefronts and data visualization applications. Users have reported reduced server load and improved performance as a result of implementing Redis as a cache.

Redis has also found success as a buffer cache, allowing for faster data retrieval and improved overall database performance. Its role in processing queues, calling APIs, and supporting vital organizational workflows has been recognized by customers who rely on its stability and speed. Furthermore, users have implemented Redis across various domains to manage user timelines, build notification systems, and implement microservices architecture

Users recommend the following for Redis:

Consider other cache options before choosing Redis. It is advisable to try out other caching solutions before jumping to Redis, even though it is a great tool for highly distributed caching.

Understand the purpose of Redis in your implementation. It is important to have a clear understanding of how Redis will be used in your specific application. Don't assume that it will work straight out of the box. Evaluate data structures and choose a model that allows for faster query times.

Use Redis for specific use cases. Redis shines in certain areas such as synchronizing states across instances and handling user sessions with Node.js. It can also be a good alternative for relational data when speed is of utmost importance. However, users caution against abusing Redis and recommend using it in a reasonable way.

Overall, users believe that Redis is a valuable tool for fast reliable storage and caching, particularly for enterprise applications. However, they also advise considering other key-value stores depending on the specific use case at hand.

Attribute Ratings

Reviews

(26-50 of 75)
Companies can't remove reviews or game the system. Here's why
Anush Ramani | TrustRadius Reviewer
Score 9 out of 10
Vetted Review
Verified User
Incentivized
We currently use Redis in only one core internal application, however, this application handles around 90% of our company's internet traffic. This application load balances requests intelligently across multiple downstream server clusters. Prior to this, we used to frequently run into bottlenecks at the DB layer when web server scaling alone was insufficient.

The great thing about this is also that each cluster can be running a different version of our application allowing us to maintain a high level of robustness for our larger enterprise customers, while also allowing us to deploy frequently to other clusters that want the bleeding edge. With Redis, being able to determine the right cluster for the right request happens blazing fast.
  • FAST LOOKUPS. First and foremost, this is the bread and butter of Redis. It is our go-to for any highly performant lookups.
  • SCALE OUT. Helps build distributed applications that need to share data across geographies.
  • Better GUI clients. At the time of adoption, the choices for UI based clients were poor. Such tools are necessary for tier 1 support personnel who may not be entirely technically savvy.
I would highly recommend Redis as a hosted solution. We tried self-hosting initially but gave up on that due to the overhead of maintenance. We really want to use Redis in mission-critical projects and as such, reliability is paramount. Self-hosting leads to concerns with reliability—that's best left to services for whom that is their bread and butter.
September 06, 2019

Redis Review

Score 9 out of 10
Vetted Review
Verified User
Incentivized
Redis is being used as a cache for real-time locations. It serves the last known location of users sharing their location with other users in real-time, thus being an essential part of our organization.
  • Storing geolocations - Redis has built-in geolocation storage capabilities, thus saving us the time of developing the logic ourselves.
  • Serving fast info for real-time apps - To anyone who works with real-time applications, fast information is the basis of good user experiences.
  • I think the documentation could improve. It's not always clear, especially for engineers that are new on Redis.
  • Redislabs admin interface could use a tune-up, maybe being more informative and with a better UI.
  • I think the main cons I see in Redis could be that it may be a bit too obscure to new users.
Redis is very useful for real-time scenarios where disposable recent information may be useful such as a location share app, mobile games or even a volatile chat. I must say, I haven't looked into Redis beyond these examples, so I couldn't recommend it for other use cases. The obvious less appropriate use would be for something such as a full database stack.
Score 8 out of 10
Vetted Review
ResellerIncentivized
We use it in our backend DB for our custom CRM platform for Healthcare providers.
  • In-memory datasets.
  • Computing set intersection.
  • Automatic failover.
  • Tech support.
  • More user forums.
  • A Wiki-style support page.
Redis is great to eliminate on-prem infrastructure. It's less appropriate for international data security compliance protocols.
Score 10 out of 10
Vetted Review
Verified User
Incentivized
We use it as one of our app supporting platforms (Resque & Rails).
  • Simple, fast Keystore.
  • Reliable.
  • Efficient storage.
  • Better handling if capacity is reached - sometimes it just crashes our server.
Good for a fast datastore if need something apart from memory. Not great if you have complex querying needs since it's a key-value store.
August 27, 2019

Redis is battle-tested

Score 9 out of 10
Vetted Review
Verified User
Incentivized
We use Redis as a distributed cache and distributed lock for our microservice environment. We have so many machines performing jobs that it's hard to make sure no task gets dropped or accidentally gets performed twice. And that's where Redis comes in--to store the global state or what jobs have been done in a fast, reliable way.
  • Helpful customer support.
  • Reasonable pricing.
  • Keeps Redis software secure and up-to-date quietly in the background.
  • Replies from customer support via could be a little faster. We're on the basic plan, and it can take up to 2 business days--it's not fast enough when your bugs need to be solved right away.
Honestly, I think whenever you need an in-network cache for a distributed system, Redis is a rock-solid option. There are no gotchas. It has been battle-tested by most engineering organizations over the past decade. And Redis Labs is the most experienced and cheapest provider for hosting it. It's not much more expensive than hosting it yourself.
August 27, 2019

Reduced costs

Score 9 out of 10
Vetted Review
Verified User
Incentivized
Our development team uses it extensively.
  • Speeds up database searches.
  • Cloud-based without the need for on-prem.
  • High availability.
  • Support needs to be better, with chat support as an option.
  • Training material for new hire dev-ops.
  • Wiki-type documentation.
Redis is suited to database and back-end data processing.
Score 6 out of 10
Vetted Review
Verified User
Incentivized
We use Redis in many capacities. We use it as a caching layer, as a shared heap, as a datastore for lock contention, as a queue, and as a primary datastore. It provides low latency storage that can be used to persist data between web requests. The data structures available allow us to use it to manage contended data in a safe and predictable fashion.
  • Fast key value store
  • Serializable concurrent usage (by virtue of being single-threaded)
  • Wide library support
  • Failover is terrifying and its safety guarantees are misleading
  • Large sets (> 500k entries) have noticeable performance degradation on what is advertised to be a O(1) query pattern
  • Hardware costs are high
If you need a caching layer it's great. I am hesitant to use it as a canonical data store. If you're okay losing data, then it's hard to beat. Additionally, cold/hot data patterns are not very useful in Redis, as all the data still has to reside in memory. You'd be better off with Redis as a hot cache and storing cold data somewhere better designed for that.
August 24, 2019

Wow

Evan Sarmiento | TrustRadius Reviewer
Score 9 out of 10
Vetted Review
Verified User
Incentivized
Redis is being used across our entire organization. Redis provides us the ability to create distributed locks when requiring atomic operations on DynamoDB.
  • Queueing
  • Locking
  • Speed
  • Multi-user authentication
  • Built-in SSL support
  • Encryption at rest
For queueing, locking, and caching.
August 24, 2019

Fan Redis user

Florent CLAPIÉ | TrustRadius Reviewer
Score 10 out of 10
Vetted Review
Verified User
Incentivized
We used Redis mainly to cache the database and as a message broker to avoid the hard work on the main server. It's used by our IT department, it's our first choice when we need a broker for messaging or cache data without persistence.
  • Cache layer
  • Transport layer
  • Store data with expiration time
  • None, it's perfect for us.
Perfect for caching the database and as a transport layer.
Score 9 out of 10
Vetted Review
Verified User
Incentivized
The R&D department uses Redis as 'in-memory' hot data storage (data storage layer of a machine learning big data architecture).
  • Low latency
  • Support hundreds of connections
  • Significant learning curve
  • Could be costly if not designed right
Good for big data storage architectures.
Less suitable if persistence is required.
August 12, 2019

Cache in action

Ajmal karuthakantakath | TrustRadius Reviewer
Score 9 out of 10
Vetted Review
Verified User
Incentivized
We use Redis within a single group and across the enterprise.
  • We used cache data to speed up the processing power.
  • To do intersections of various sets and achieve a high performing solution.
  • To use it as a second-level cache for large data.
  • Luva script is a pain to work on
HTTP sessions, caching, and as DB for a decent size data.
Davide Pedranz | TrustRadius Reviewer
Score 9 out of 10
Vetted Review
Verified User
Incentivized
We use Redis as a distributed cache for many internal tools across the entire organization. Some tool uses Redis as a filter to remove millions of duplicated jobs every day.
  • Really fast.
  • Data model simple to understand.
  • Very simple to use.
  • Support batches of operations to increase performances.
  • Nothing, it just works.
Well suited:
  1. Cache
  2. Filtering out duplicates
  3. Implement rate limits
  4. Store access tokens or revoked credentials
Not suited for:
  1. Storing complex data (go for a traditional database instead)
Score 10 out of 10
Vetted Review
Verified User
Incentivized
We leverage Redis as our L2 centralized cache to hold frequently accessed data such as user ids, account balances, and other metadata. It is used across our entire organization for various software services and projects. For us, the ease of spinning up an instance and having it "Just work!" is what is appealing. We don't have the luxury of hiring Redis administrators, but since our use case isn't too complex, a hosted version works just fine for us. This should speak to the flexible usability with the product.
  • It's easy to manage.
  • It fits most simple caching use cases.
  • Can be clustered.
  • Highly configurable.
  • Clustering can be easier to set up.
  • Sharing data can be challenging.
It's a great solution for simple and centralized caching layers, and you don't want a lot of overhead. Be sure Redis is the right product for your application's behaviors. Sharing data can be challenging. You will have to think about how to deal with that in the future. I used a hosted Redis version, and although there was noticeable "ping latency" vs a localize instance, the latency was within our acceptable response window.
Score 5 out of 10
Vetted Review
Verified User
Incentivized
Redis is currently being used in silo within my company. Our department was one of the first groups to use it as part of the software modernization initiative.
  • Caching strategy
  • Redis is not a panacea for fast and quick access to the frequently used data. There were times the development team had to go back to JVM cache to achieve the use case.
  • Maintaining Redis as a separate persistence has its price ( in operation and maintenance).
  • HA and DR was a biggest challenge with the widespread adoption of Redis
Don't expect Redis to replace your SQL/ NoSQL persistence layer altogether. It's very tempting to think that Redis can turbo boost your web application to Utopia, but be very judicious in selecting what Redis can do for you. There is always a price to bring an additional component into your ecosystem.
June 25, 2019

Redis Review

Shehan Wickramarathne | TrustRadius Reviewer
Score 8 out of 10
Vetted Review
Verified User
Incentivized
We use Redis to cache huge responses received from 3rd party services in our Backend to Frontend (BFF) layer, to improve performance and loading time in the frontend single page web application. It is used to cache pricing, product data which would stay fixed for a given amount of time. We were able to drastically reduce the loading time of pages in the frontend due to this caching mechanism using Redis.
  • Performance
  • Error resilient
  • Easy to use
  • Learning curve is steep
  • Developing in a local environment can be difficult.
Redis is well suited for quick caching and performance-centric applications.
June 17, 2019

Redis and its CSAT

Gunasekar Duraisamy | TrustRadius Reviewer
Score 9 out of 10
Vetted Review
Verified User
Incentivized
We have used Redis in an in-memory key-value store.
  • Binary key-value store support
  • Simple data structures
  • Very well documented
  • Nested use of data structures
  • GUI tool in better shape
  • More courses on Redis
It is well is suited as an in-memory key value store for applications which require very little response time. The data can be stored and retrieved from Redis in minimal time when compared to traditional databases. It is not suitable when the data cannot be stored in memory completely.
Joseph Ngugi Muiruri | TrustRadius Reviewer
Score 10 out of 10
Vetted Review
Verified User
Incentivized
Redis has helped us to improve the performance of our database performance by using it as a buffer/cache to the most frequently accessed pieces of data while doing data analytics. It provides us with a faster and simpler way to ship data from the database to the client's computer. It also helps us work with real-time data efficiently and reliably.
  • Excellent performance
  • Scalability
  • Reliability
  • Real-time analytics
  • Few commands
Using Redis to cache our most frequently accessed data was one of the best decisions we ever made.
When it comes to performing analytics, Redis is very efficient at that as well as handling large amounts of data common in the data analytics industry. Redis also acts as a very excellent NoSQL database.
Manjeet Kumar | TrustRadius Reviewer
Score 10 out of 10
Vetted Review
Verified User
Incentivized
First, I would like to clarify that Redis is not being used in production by my organization currently. Right now, I am involved in an R&D project, where I am experimenting on how to induce Redis on various modules. I am planning to use Redis as a cache management solution in our application for now. On successful implementation, we will extend Redis usage to manage other functionality as well.
  • Cache management: Redis is the best solution out there for cache management. It out marked Memcache in latency. Redis gives better flexibility when comes to data storage techniques.
  • For example: Instead of storing objects as serialized strings, we can use a Redis Hash to store an object's fields and values and manage them using a single key.
  • Replication: Redis has the best build in replication feature.
  • For example, It allows slave Redis instances to be exact copies of master instances. The slave will automatically reconnect to the master every time the link breaks and will attempt to be an exact copy of it regardless of what happens to the master.
  • Pub/Sub- It's Publish & Subscribe system of Redis. Where Publish broadcast content to all its subscribers simultaneously. There are various use cases of Pub/Sub. Developers are using it for triggering scripts based on Pub/Sub events. There are various chat ecosystems built on the Pub/Sub module.
  • Redis is super fast but it comes with a cost. Whole dataset resides in RAM. So it can be costly as primary memory is more costly, then secondary ones.
  • Persistence issues: To achieve it, Redis uses a memory dump to create a persistence snapshot, that's cool. But it requires some Linux Kernel tweaking to avoid performance degradation while the Redis server process is forking. This further causes latency.
  • Master-slave structure side effect: Master-slave architecture comes with its own side effects. Please note that there will be only one master with multiple slaves for replication. All writing goes to the master, which creates more load on the master node. So, when the master goes down, the whole architecture does.
Well suited scenarios: Cache management, real-time analysis of events, and leaderboards/counting. Less appropriate scenarios: Persistence and clustering.
May 20, 2019

Redis analysis

Score 8 out of 10
Vetted Review
Verified User
Incentivized
We use it as a service. With it, we have developed libraries for rate limiting, ETL job flow coordination, and counters.
  • Atomic counters
  • Cache colocated with other services that require low latencies
  • Automatic memory management
  • CLI could be improved
  • Configuration management
  • Replication and snarfing
It all depends and the scale of the application and the scale/size of the data set. Fast key-value lookups fit very well in the Redsis model.
Score 9 out of 10
Vetted Review
Verified User
Incentivized
We're using Redis in our development department, as a layer on top of regular databases (MongoDB, MySQL), as cache, and for other critical data storage.
  • The main point: speed.
  • Easy to use and integrate with the rest of the components of our system.
  • Full-text search support
  • GUI tools
  • Pricing
I think it is perfect for managing temporary auth tokens and for caching.
May 15, 2019

Overview of Redis

Score 7 out of 10
Vetted Review
Verified User
Incentivized
We use Redis as a cache, inter-process communication mechanism and queue system. It is used by our IT team, and it helps us solve technical issues.
  • Very high performance
  • Low Latency
  • High Reliability of data via clustering and disk backups
  • Data protocol can be more compact
Great as as cache & queue, not so great for storing large blocks of data.
Kiran Narasareddy | TrustRadius Reviewer
Score 10 out of 10
Vetted Review
Verified User
Incentivized
Redis is being used by our product engineering team. We use it for caching and as a store for our background processing engine.
  • High-speed access for a database where the size is generally well-known.
  • If you display real-time stock prices, you can use Redis to rapidly get the latest stock price by its key and get it displayed to the user.
  • Support for data structures such as scalars, sets, hashes, and lists.
  • Persistence can impact performance since Redis will use memory dump to create snapshots used for persistence.
  • Redis supports only basic security options. Redis doesn't provide any access control.
  • There is no internal full-text search support and it is difficult to model relationships using Redis.
Well suited for a real-time stock price ticker. Not well suited for eCommerce search.
Score 8 out of 10
Vetted Review
Verified User
Incentivized
Used only by engineering for our main production application. We use a Ruby based job system named Sidekiq that uses Redis as its backing store.
  • Lots of versatility. We use it as a dumb store for string payloads, but can store a bunch of other data structures also.
  • Easy to set up
  • Persistence support isn't great. RDB is useless for our case (job system). AOF has *huge* performance issues, particularly when reading the file on startup after a failure.
Well suited: Job system (with Sidekiq), Cache, Pubsub for short-lived messages.
Less appropriate: Anything where durability matters.
May 02, 2019

A Perfect Fit

Score 9 out of 10
Vetted Review
Verified User
Incentivized
Redis is used across our product offering as a user session store. It allows for very quick access to user session information and has been very reliable, serving our needs well.
  • Session storage.
  • It's extremely fast.
  • Reliable.
  • Nothing to suggest. It has fit our needs perfectly.
It has been very well suited for user session storage/access.
Score 10 out of 10
Vetted Review
Verified User
In Anzu technologies Pvt Ltd we used Redis for multiple reasons. We developed a social app which allows the user to bookmark the video and internet content. Performance was an important factor so we implemented user timelines using Redis sorted sets. We implemented the whole notification system using Redis. Our developed micro services architecture is using Redis. Caching was another common challenge where Redis performed very well. We just love Redis.
  • Caching
  • Instant response
  • Easy to use
  • Very light footprint
  • Nested JSON indexing
  • Fragmentation
  • Nothing else
Redis hyperlog, bloom filters are much lighter than sorted sets for different business use cases. Streams are a complete replacement for the Kafka data pipeline.
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