EXISTS Command
EXISTS Command
If you simply need to check whether a key exists in Redis without retrieving its value, you can use the EXISTS command.
Example Usage
If you provide a single key, the result will be 1 if the key exists, or 0 if it does not.
In this case, the result will be 1 since the key mykey exists.
When multiple keys are specified, the command will return the number of keys that exist in Redis. If we also have keys key1 and key3 in the database, this query will return 2, since only key1 and key3 exist in the database.
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EXISTS Command
If you simply need to check whether a key exists in Redis without retrieving its value, you can use the EXISTS command.
Example Usage
If you provide a single key, the result will be 1 if the key exists, or 0 if it does not.
In this case, the result will be 1 since the key mykey exists.
When multiple keys are specified, the command will return the number of keys that exist in Redis. If we also have keys key1 and key3 in the database, this query will return 2, since only key1 and key3 exist in the database.
Grazie per i tuoi commenti!
