Redis Data Types

Redis supports a variety of data types, allowing you to store and retrieve different types of values.

Strings

Strings are the simplest data type in Redis. They can contain any binary data, such as text, JSON, or serialized objects. Strings are commonly used for key-value storage and retrieval.

Here's an example of using strings in Redis with C#:

1const string player = "Kobe Bryant";
2
3// Set the string value
4db.StringSet("favorite_player", player);
5
6// Get the string value
7string favoritePlayer = db.StringGet("favorite_player");
8Console.WriteLine("My favorite player is " + favoritePlayer);

Lists

Lists in Redis are ordered collections of strings, allowing you to add elements to the head or tail of the list. They are useful for implementing queues, stacks, and maintaining an ordered collection of data.

Here's an example of using lists in Redis with C#:

1// Push elements to the list
2db.ListRightPush("queue", "item1");
3db.ListRightPush("queue", "item2");
4
5// Get all elements of the list
6RedisValue[] queue = db.ListRange("queue");
7Console.WriteLine("Queue: " + string.Join(", ", queue));

Hashes

Hashes in Redis are maps between string fields and string values, like a dictionary. They are useful for representing objects, where each field is a property of the object.

Here's an example of using hashes in Redis with C#:

1// Set hash field values
2db.HashSet("user", new[] { new HashEntry("name", "John"), new HashEntry("age", "30") });
3
4// Get hash field values
5RedisValue name = db.HashGet("user", "name");
6RedisValue age = db.HashGet("user", "age");
7Console.WriteLine("User: Name = " + name + ", Age = " + age);

xxxxxxxxxx

}

using StackExchange.Redis;

using System;

​

class Program

{

    static void Main()

    {

        // Connect to Redis

        ConnectionMultiplexer redis = ConnectionMultiplexer.Connect("localhost:6379");

        IDatabase db = redis.GetDatabase();

​

        // Set a string value

        db.StringSet("name", "John");

​

        // Get the string value

        string name = db.StringGet("name");

        Console.WriteLine("Name: " + name);

​

        // Set a list value

        db.ListRightPush("users", "user1");

        db.ListRightPush("users", "user2");

​

        // Get the list value

        RedisValue[] users = db.ListRange("users");

        Console.WriteLine("Users: " + string.Join(", ", users));

​

        // Set a hash value

        db.HashSet("person", new[] { new HashEntry("name", "John"), new HashEntry("age", "30") });

​