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Diffstat (limited to 'iredis/data/commands/keys.md')
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diff --git a/iredis/data/commands/keys.md b/iredis/data/commands/keys.md new file mode 100644 index 0000000..8991beb --- /dev/null +++ b/iredis/data/commands/keys.md @@ -0,0 +1,37 @@ +Returns all keys matching `pattern`. + +While the time complexity for this operation is O(N), the constant times are +fairly low. For example, Redis running on an entry level laptop can scan a 1 +million key database in 40 milliseconds. + +**Warning**: consider `KEYS` as a command that should only be used in production +environments with extreme care. It may ruin performance when it is executed +against large databases. This command is intended for debugging and special +operations, such as changing your keyspace layout. Don't use `KEYS` in your +regular application code. If you're looking for a way to find keys in a subset +of your keyspace, consider using `SCAN` or [sets][tdts]. + +[tdts]: /topics/data-types#sets + +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. + +@return + +@array-reply: list of keys matching `pattern`. + +@examples + +```cli +MSET firstname Jack lastname Stuntman age 35 +KEYS *name* +KEYS a?? +KEYS * +``` |