如何使用Redis查看缓存数据（怎么查redis缓存）

It is known to all that Redis is an open source in-memory data structure store that can be used as a database, cache, and message broker. It also can be used to store cache data and improve the performance of applications. But, many people often don’t know how to check the cached data stored in Redis. Today, I’m going to show how to check the cached data stored in Redis.

1. Open the terminal and log in to Redis. By default, the Redis server is run on port 6379. To log into Redis,use the command

`redis-cli -p 6379`

2. After logging in, view all the keys stored by using the following command:

`KEYS *`

This command will list all Redis keys stored.

3. To view the value of a specific key, use the command `GET key_name`, for example:

`GET my_key`

4. To use the command `SET` to set a value for a key, for example:

`SET my_key “I’m learning Redis.”`

5. To use the command `EXPIRE` to set an expiry time for the key. For example, set the expiry time for the key to 30 seconds:

`EXPIRE my_key 30`

6. Use the `TTL` command to get the remning seconds before the key expires:

`TTL my_key`

Above are the basics of how to use Redis to view cached data. Of course, there are also other commands that can be used to get more detled information such as `info`, `dbsize` and `debug object`. These commands will give you a more in-depth understanding of the data stored in Redis.

So, these are the steps on how to check the cached data stored in Redis. I hope this article can help you understand the basics of how to use Redis to view cached data.