Redis存放了什么（redis里边放哪些东西）

Redis is an open source, in-memory data structure store used as a database, cache and message broker. It’s designed to serve a variety of purposes by offering a wide range of functionality. For example, it can be used to store data in a key-value format, as a message queue, or as a cache. In any case, its job is to store data.

But what exactly is Redis storing? To answer this question, let’s take a look at its structure and types of data it can store.

At its core, Redis is a key-value database. This means that the data is stored in a collection of key-value prs. A key is a unique identifier that links to a specific piece of data, while the value holds the actual data. This allows graphs, lists, dictionaries, strings and objects to be stored in Redis.

Redis also has a few special data structures built in. The most common one is the hash. A hash allows a user to store multiple key-value prs in a single record, allowing for more efficient storage and retrieval. Redis also supports a few other data structures, such as Sets, Sorted Sets, HyperLogLog and Geospatial indexes. All of these structures can be used to store and retrieve data stored in Redis.

When it comes to the type of data stored in Redis, it depends largely on the specific use case. It works with strings, numbers and data structures such as lists, sets and more. Many developers use it to store session data, caching, publish/subscribe messaging and real-time data analytics.

Overall, Redis is an incredibly powerful tool for storing and retrieving data. With its collection of data structures, it can be used to store almost any type of data. From simple strings, numbers and lists to complex objects, Redis is a great choice for developers looking to store data quickly and efficiently.

One of the best parts of Redis is that the code is open source and easily accessible to anyone. With its simple syntax and easy-to-use API, Redis can be used by anyone regardless of their experience or programming language.

In conclusion, Redis is an open source, in-memory data structure store used as a database, cache and message broker. It’s designed to store a variety of data types, from strings and numbers to complex objects. Its simple syntax and easy-to-use API make it an attractive choice for developers of all levels.