Redis Features
Features of Redis are as follows:-
Rich Data Structures
Redis provides five data choices for the values. Hashes, lists, sets, strings, and sorted sets are examples. The operations specific to these data kinds are provided with the well-documented time-complexity (The Big O notation).
Data Persistence
Data persistence indicates that the data continues to exist after the production process for the specific data has concluded. In other words, saved data must be accessible even if the server dies. To be persistent, a data store must write to permanent storage (i.e., non-volatile storage such as HDD or SSD).
Performance
Redis' performance is incredibly efficient. The application offers remarkable efficiency for reading and writing operations due to its in-memory nature, a project manager's commitment to keeping complexity to a bare minimum, and an event-based programming paradigm.
High Availability
Redis includes built-in functionality for non-blocking, asynchronous primary/replica replication to ensure high-level data availability. Redis provides a primary-replica architecture with either a single node primary or a clustered topology. This enables us to create highly available solutions that deliver consistent performance and dependability.
Simply Efficient and Lightweight
Redis is written in the ANSI C programming language and has no dependencies. The software runs flawlessly in all POSIX settings. Redis is not officially supported on the Windows platform. However, Microsoft has supplied an experimental build for the same.
Redis Use Cases
When it comes to Redis use cases, the most common things many people think of are data caching and session storage (i.e., web session). Redis provides a wide range of use cases that can be utilized and beneficial in various situations, particularly those involving speed and scalability, which is simple to handle when scaling up or scaling down.
Typical use cases for most experienced users or enterprises who have been using Redis for a long time include session caching, complete page cache, message queue applications, leaderboards, and counting, among others. Redis is also popular among big cloud providers that provide fully-managed databases, or DBaaS. Redis is used by large corporations such as Twitter; Amazon Web Services(AWS) provides a managed Redis service called Elasticache for Redis; Microsoft provides Azure Cache for Redis in Azure, and Alibaba provides ApsaraDB for Redis in Alibaba Cloud.
Advantages of Redis
Some of the advantages of Redis are listed below.
- It's extremely fast. Faster than any other caching service available.
- Redis is simple to use because of its ease of setup.
- Redis supports practically all data types and provides flexible data structures.
- Redis supports key-value pairs with a maximum size of 512 MB.
- Redis employs its own hashing mechanism known as Redis Hashing.
- There is no downtime or impact on performance, whether scaling up or down.
Disadvantages of Redis
Some of the disadvantages of Redis are listed below.
- Because data is sharded according to the hash-slots assigned to each master, if the master holding some slots fails, any data written to that slot will be lost.
- Clients connecting to the Redis cluster should be aware of the cluster topology, which results in client configuration costs.
- Failover occurs only if the master has at least one slave.
- Because it is in-memory, it takes a large amount of RAM and should not be used on ram servers.
Frequently Asked Questions
What is the full form of Redis?
Redis stands for Remote Dictionary Server.
How is Redis different from other databases?
Redis is a NoSQL, Opensource, in-memory data structure store. It follows the principle of a key-value store.
Which are the big companies using Redis?
GitHub, Twitter, Stackoverflow, etc., are the most popular companies using Redis.
Which are the different data types used in Redis?
There are mainly five types of data types supported by Redis: Strings, Hashes, Lists, Sets, and Sorted Sets.
Conclusion
In this article, we have extensively discussed the concepts of Redis. We started by introducing Redis, the feature of Redis, the uses of Redis, and finally concluded with the pros and cons of Redis.
We hope that this blog has helped you enhance your knowledge regarding Redis and if you would like to learn more, check out our articles on the operational databases. Do upvote our blog to help other ninjas grow. Happy Coding!
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