Redis is an open source in-memory data structure store used as a database, cache and message broker. It is written in ANSI C.It allows users to organize data using the key-value storage method. It is used for cache management and speeding up the web application by using a structured way to store data in the memory and thus is faster than conventional database techniques like MySQL, Oracle,...
In Redis, every data structure is represented as a key. This is called key-value storage technique. In this, each key represents each formats resulting in more operations. It uses a memory caching technique which allows users to store data in a more durable and robust manner.
Redis holds all its database in memory using disk only persistence technique which stores the data in computer RAM which makes the processing fast. Redis have the datatypes such as
Following is the list of main features of Redis
1. Redis is extremely fast since it stores dataset in primary memory. It facilitates you to use the multiple values in a single command to speed up communication. It also supports pipelining of commands.
2. Redis supports various types of data structures such as strings, hashes, sets, lists, sorted sets with range queries, bitmaps, hyperloglogs and geospatial indexes with radius queries.
4. All Redis operations are atomic, that is if two clients concurrently access, Redis server will receive the updated value.
5. It is a multi-utility tool and can be used in a number of use cases such as caching, messaging-queues, any short-lived data in your application, such as web application sessions, web page hit counts, etc.
6. Redis database can be secured, such that any client making a connection needs to authenticate before executing a command.
7. Redis is written in ANSI C and works in most POSIX systems like Linux, *BSD, OS X without external dependencies. Linux and OS X are the two operating systems where Redis is developed
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