Redis batch delete KEY method

There is an DEL instruction to delete a single Key in Redis, but there does not seem to be a batch Key instruction to delete Key, but we can do this with the xargs instruction of Linux.

redis-cli keys  " * "  | xargs redis-cli del
// if redis-cli Not set to system variable, need to be specified redis-cli Full path 
// Such as: /opt/redis/redis-cli keys  " * "  | xargs /opt/redis/redis-cli del

To specify the Redis database access password, use the following command:

redis-cli -a password keys  " * "  | xargs redis-cli -a password del

To access a specific database in Redis, use the following command:

// The following command specifies the data sequence number as 0 , the default database 
redis-cli -n 0 keys  " * "  | xargs redis-cli -n 0 del

Delete all Key

To delete all Key, you can use Redis's flushdb and flushall commands:

// Deletes all in the current database Key

flushdb

// Delete all databases key

flushall

Note: the keys directive can be used for fuzzy matching, but if Key contains Spaces, the match will not be available. No good solution has been found yet.