Redis command: ACL CAT

Redis Command: ACL CAT

Redis is a versatile and powerful in-memory data structure store that supports a wide range of commands. One such command is ACL CAT, which allows you to list the Access Control List (ACL) categories or the commands within a specific category.

Overview of Access Control List (ACL) in Redis

Access Control List (ACL) in Redis enables you to define fine-grained access controls for different Redis clients. With ACL, you can restrict or grant access to Redis commands, keys, and other server functionalities based on different user roles and permissions.

The ACL CAT command gives you a detailed overview of the available ACL categories or the specific commands associated with a particular category. It provides valuable insights into the different levels of access and control that you can configure in your Redis server.

Listing ACL Categories

You can use the ACL CAT command to list all the available ACL categories with the following syntax:

ACL CAT

This command returns a list of all the existing ACL categories in your Redis server. Each category represents a set of Redis commands grouped together based on their functionality or purpose.

Example:

127.0.0.1:6379> ACL CAT
1) +@all "" allkeys
2) +@admin hello kill
3) +@readonly readonly
4) +@write set get
...

In this example, the Redis server returns four ACL categories:

• @all: Represents all Redis commands and all keys in the server.
• @admin: Represents administrative commands like HELLO and KILL.
• @readonly: Represents read-only commands like GET.
• @write: Represents write commands like SET.

By listing the available ACL categories, you can understand the different levels of access you can assign to users, granting or restricting specific command execution.

Listing Commands within a Category

In addition to listing categories, you can also use the ACL CAT command to list the specific commands within a particular category. The syntax is as follows:

ACL CAT <category>

In this command, replace <category> with the name of the desired ACL category.

Example:

127.0.0.1:6379> ACL CAT @admin
1) +@admin hello kill

In this example, we list the commands within the @admin category, which includes the commands HELLO and KILL.

By listing the commands in a specific category, you gain a better understanding of the functionalities and level of control associated with that category.

Conclusion

The Redis command ACL CAT provides essential information about the available Access Control List (ACL) categories and the commands associated with them. By understanding the ACL structure, you can effectively manage user roles, permissions, and access control within your Redis server.

Now that you have learned about ACL CAT, leverage this command to enhance the security and control of your Redis environment. Experiment with different ACL categories, assign appropriate command permissions to users, and ensure a well-protected and optimized Redis deployment.