Exploring the Data Types Stored in Redis: A Comprehensive Guide（redis存放什么数据）

Redis is an open-source, in-memory key-value data store used for building real-time applications. Redis is popular for its performance, scalability, and easy-to-use data structures. It is used by many companies worldwide to store data quickly and efficiently.

Redis is able to store different types of data such as strings, hashes, lists, sets, and sorted sets. It is also able to store binary files such as images, audio, and video. In this article, we will explore the types of data stored in Redis and provide a comprehensive guide to help you get started.

Strings: Strings are the simplest type of data stored in Redis and can be used to store both numbers and text. Strings can have a maximum length of up to 512 MB. Redis provides several commands to manipulate strings including SET, GET, and INCR.

Hashes: Hashes are similar to dictionaries in Python and can store multiple key-value pairs. They are stored as fields and can contain up to 512 MB of data. Redis provides several commands to manipulate hashes including HSET, HGET, and HDEL.

Lists: Lists are ordered collections of strings and can contain up to 512 MB of data. Redis provides several commands to manipulate lists including LPUSH, LPOP, and LREM.

Sets: Sets are unordered collections of strings without duplicates and can contain up to 512 MB of data. Redis provides several commands to manipulate sets including SADD, SREM, and SISMEMBER.

Sorted Sets: Sorted sets are a type of data structure in which each element is associated with a score. The elements are sorted according to their score, with the highest score at the top. Sorted sets can contain up to 512 MB of data. Redis provides several commands to manipulate sorted sets including ZADD, ZREM, and ZRANGEBYSCORE.

Binary Files: Redis can store binary files such as images, audio, and video. These files are stored as strings and can contain up to 512 MB of data. Redis provides several commands to manipulate these binary files including SET, GET, and STRLEN.

Redis provides developers a powerful and efficient tool for storing and manipulating data. It is easy to use and provides a wide range of data types. This article has provided a comprehensive guide to the types of data stored in Redis and should help you get started.