How to clear redis cache

The method of clearing the Redis cache is as follows: Clear all keys: Use the FLUSHALL command to clear all keys. Clear keys in a specific pattern: Use the DEL command to clear keys matching a specific pattern. Clear expired keys: Use the EXPIRE command to set the expiration time for the key, and it will be automatically cleared after expiration. Clear lazy delete keys: Use the BGREWRITEAOF or BGSAVE command to manually clear lazy delete keys. Clear keys in a specific database: Use SELECT to select a database, and then use the FLUSHALL command to clear the keys in that database.

How to clear the Redis cache

Clear all keys:

Use the <code>FLUSHALL</code> command to clear all keys in the Redis server. This command will delete all data, so use it with caution.

<code>FLUSHALL</code>

Clear keys in a specific pattern:

Use the DEL command to clear keys that match a specific pattern. For example, to delete all keys starting with user:, you would use the following command:

<code>DEL user:*</code>

Clear expired keys:

Use The EXPIRE command sets the expiration time for a key. When a key expires, Redis automatically clears the key.

<code>EXPIRE key_name seconds</code>

Clear lazy deletion keys:

Redis uses lazy deletion by default, which means that keys marked for deletion are not actually deleted until the server is stopped. To manually clear lazy delete keys, use the BGREWRITEAOF or BGSAVE command.

<code>BGREWRITEAOF
BGSAVE</code>

Clear keys in a specific database:

Use the SELECT command to select the database from which you want to clear keys. Then use the above method to clear the keys in that database.

<code>SELECT db_number
FLUSHALL</code>

Other methods:

• Use a Redis management tool (GUI), such as RedisDesktopManager or Redis Commander.
• Restart the Redis server. This will clear all data, including cache.

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