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I have a use case where I need to obtain number of bytes for all the keys that match a regular expression.

  • Is there a functionality similar to like sizeof(keysmatch:*)?
  • If so, would that include size for all types of keys (sets, lists, etc)?

I understand I can use MEMORY USAGE key, however, I would need to pipe it to get all the values. Is that the best way?

From my understanding DBSIZE returns only the key count. Is there a functionality that returns the size of the db?

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Is there a functionality similar to like sizeof(keysmatch:*)?

NO. AFAIK, you have to use MEMORY USAGE.

Is there a functionality that returns the size of the db?

You can use MEMORY STATS to get the memory usage of the whole database.

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