Command to clear redis cache

Redis provides commands for clearing cached data, including: deleting a single key: DEL, UNLINK clearing the entire database: FLUSHDB, FLUSHALL

Commands to clear Redis cache

Redis provides a variety of commands to clear the data in its cache. These commands are divided into two categories:

• Deleting a single key: These commands delete the specified key and its associated value.
• Clear the entire database: These commands delete the entire Redis database and all its keys and values.

Delete a single key

• DEL key1 [key2 ...]: Delete one or more keys.
• UNLINK key1 [key2 ...]: Deletes one or more keys asynchronously without blocking Redis.

Clear the entire database

• FLUSHDB: Delete all keys and values ​​in the current database, but keep other databases.
• FLUSHALL: Delete all keys and values ​​in all databases.

Choose the appropriate command

Which command you choose depends on the amount of data to be deleted and the desired cleaning speed.

• If you only want to delete a few specific keys, use DEL or UNLINK.
• If you want to clear the entire database, use FLUSHDB or FLUSHALL.

Note:

• Using FLUSHDB or FLUSHALL will block Redis until the clear operation is completed .
• UNLINK is asynchronous, which means it does not block Redis. The
• DEL and UNLINK commands return no results, while the FLUSHDB and FLUSHALL commands return "OK".

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