KEYS

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Get keys by key_pattern

The usage is keys key_pattern.
You can use a glob-style pattern.

* : 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 above (*?[^]) as literals, prefix them with \.

Command>	keys * Get all keys
Result>	0) user-1 1) user-2 2) user-30 3) myset 4) meset 5) miset
Command>	keys user-* Get keys that start with user-
Result>	0) user-1 1) user-2 2) user-30
Command>	keys *set Get keys that end with set
Result>	0) myset 1) meset 2) miset
Command>	keys user-? Get keys that start with user- and have one more character
Result>	0) user-1 1) user-2
Command>	keys m[ye]set Get keys that start with m, then y or e, and end with set
Result>	0) myset 1) meset

Available since version 1.0.0.
Time complexity is O(N). N is the number of all keys in the database, not the number of keys returned.
This command does a 'full scan' of the DB and can affect server performance, so please avoid using it unless necessary. Be especially careful on production servers with many keys.

Related commands

Clients for Java	Jedis, Lettuce, Redisson
Clients for C	Hiredis

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