redis commands common rm

RM   (remove key)

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Delete keys by pattern

Usage: rm key*. Deletes asynchronously.
Available since Ent 8.1.0.
The intent of this command: like 'ls' or 'll', you can delete keys by key pattern.

• rm * -> Deletes keys. There is an ll_max limit.
• rm key* -> Deletes keys that start with key.
• rm * string -> Deletes string keys.
• rm key* string -> Deletes string keys that start with key.
• Use with 'ls/ll': it is useful to check keys with ls/ll, then delete them.

You can use a glob-style pattern for the key.

• * : matches any characters: h*llo -> hllo, heeeello, etc
• ? : matches one character: h?llo -> hallo, hello, hxllo, etc
• [alphabet] : matches a character in the brackets: h[ae]llo -> hallo, hello
  
• [^e] : matches any character except those in the brackets: h[^e]llo -> hallo, hbllo, ... but hello is excluded.
  
• [a-c] : matches a character range in the brackets: h[a-c]llo -> hallo, hbllo, hcllo
• \ : to use the special characters (*?[^]) as literals, prefix them with \.

Syntax

RM key_pattern [type]

• type can be string/list/set/zset/hash/stream.
• Available since Enterprise version 8.0.0.
• Time complexity is O(N). N is the number of keys.
• Like KEYS, this command does a full scan of the DB and can affect server performance, so it is limited by the redis.conf ll-max parameter.