What is Redis? Usage for Cache and Storage, Usage Areas

One of the most important terms in the computer and software world is undoubtedly Redis. Those who are looking for a database with powerful, rich and useful features want to take advantage of Redis first. One of the most popular databases is Redis. In this article, we have searched for you who are curious about Redis.

What is Redis?

Redis ( Remote Dictionary Server ) means remote dictionary server in Turkish. It is used to implement non-relational key and value databases as well as caches. Redis is also known as an open source in-memory data store .

Redis is distinguished from other data stores in that it has the ability to store and use high-structured data. An open source NoSQL database that holds data in memory, Redis is technically a data store. Redis is an in memory database. So in this case, it stores the data on RAM memory. Optionally, it saves it to disk at certain time intervals. 

Redis can quickly respond to multiple requests per second. It is also known to be a good option for,

• Caching
• Chat
• Messaging
• Media streaming, 

real-time analytics applications.

What are the Features of Redis?

Redis is known for its high level of data structure. It offers five different data options for values . These options are; 

• lists
• sets
• arrays
• hashes
• rdered sets.

It keeps complexity to a minimum and has an event-based performance system. In this way, it performs very well for reading and writing.

Redis has no dependent and dependent structure. It works flawlessly in  all POSIX environments.

Thanks to its high usability, it provides great convenience to its users. 

How Does Redis Work?

Redis works by storing keys that match one of 5 different data structures : 

1. STRING
2. LIST
3. SET
4. HASH
5. ZSET . 

Redis has 4 main versions to protect the integrity of the database. These are;

1. Independent Redis
2. Redis Master-Slave Replication
3. Redis Sentinel
4. It is known as the Redis Cluster.

Where is Redis Used?

Redis is used for caching, thanks to its high performance. It shines and works best in this area. Redis is also used to cache high traffic and static pages. It is not recommended to use Redis if the content of the page is variable and dynamically generated. 

In addition, Redis is also used to store sessions. Memcached is not persistent unlike Redis. Redis allows session storage as it is persistent. In this way, Redis also increases the user experience. Sessions must be persistent to prevent loss of data. This is especially common in online shopping. 

Redis Usage Examples

Redis has many different use cases. Now let's examine them in detail.

Redis is most commonly used to create session caching. The purpose of this is to speed up the experience of websites. The data of these sites is temporarily in RAM . That's why Redis plays an active and big role here. Online stores use it often. 

Redis is also used as a full page cache . In WordPress, Pantheon has a plugin called wp-redis that makes websites load the fastest. 

Redis Queses are also frequently used for messaging, site traffic, data collection, and business management. 

Redis is also used to create the leaderboard. Using the Redis Sorted Set data structure, game developers preserve the sorted list and ensure the uniqueness of the items. 

Redis is also frequently used by social networking sites. Its good analysis of data also works very well for online advertising campaigns.

It also supports the use of Publish and Subscribe. It makes good use of list data structures.

Redis Advantages

Redis has a database that responds quickly. It moves forward with speed in read and write operations. 

It uses disk storage, which is designed for processes. In this way , data sets become permanent. 

The data you can store in Redis can be of any size or function. It provides security and convenience for binaries. 

It has a key-based access system. This helps in efficient access. 

Redis is a software language open to development. For this reason, it is also open to integrations. 

It is an open source project. It is also not possible to experience a vendor and technology lockdown.

Redis Cache and Usage for Storage

The storage process takes place in the cache so that the data can be accessed more quickly in the future. For this reason, caching is also known as caching. Redis also prevents slowdown of data access with disk or SSD . For this reason, it is a good choice for implementing in-memory caching. They are the most popular among Redis caching solutions, such as caching frequently used objects, persistent session caching, web page caching.