Redis KEYS
Redis KEYS Command
Redis KEYS command is used to return all keys matching a pattern.
Supported glob-style patterns:
- h?llo matches hello, hallo and hxllo
- h*llo matches hllo and heeeello
- h[ae]llo matches hello and hallo, but not hillo
- h[^e]llo matches hallo, hbllo, ... but not hello
- h[a-b]llo matches hallo and hbllo
Use \ to escape special characters if you want to match them verbatim.
Here are some common uses and scenarios for the "KEYS" command:
- Debugging and Development: Quickly find and inspect keys during development.
- Data Management: Identify and manage groups of related keys.
- Cleanup: Locate and delete unused or expired keys.
- Backup and Migration: List keys for export or migration purposes.
Syntax:
KEYS PATTERN
Available since
1.0.0.
Return Value
Array Reply : List of keys matching pattern (Array).
Return Value Type
Array
Example: Redis KEYS
First, create a key in redis and set some value in it.
127.0.0.1:6379> MSET key 1 key1 2 key2 3 key3 4 OK 127.0.0.1:6379> KEYS *e* 1) "key" 2) "user-p" 3) "keys" 4) "user" 5) "languages" 6) "user-y" 7) "numbers" 8) "user-v" 9) "user-x" 10) "hash key" 11) "key3" 12) "key1" 13) "key2" 127.0.0.1:6379> KEYS s?? (empty list or set) 127.0.0.1:6379> KEYS * 1) "key" 2) "user-p" 3) "langhash" 4) "keys" 5) "user" 6) "xhash" 7) "languages" 8) "user-y" 9) "lang" 10) "numbers" 11) "user-v" 12) "user-x" 13) "hash key" 14) "myhash" 15) "key3" 16) "key1" 17) "key2"
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https://www.w3resource.com/redis/redis-key-pattern.php
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