`|Redis Documentation| <index.html>`_
**HlenCommand: Contents**
  `HLEN \_key\_ (Redis > <#HLEN%20_key_%20(Redis%20%3E>`_
    `Return value <#Return%20value>`_
HlenCommand
===========

#sidebar `HashCommandsSidebar <HashCommandsSidebar.html>`_
HLEN \_key\_ (Redis >
=====================

1.3.10)= *Time complexity: O(1)*
    Return the number of entries (fields) contained in the hash stored
    at *key*. If the specified *key* does not exist, 0 is returned
    assuming an empty hash.

Return value
------------

`Integer reply <ReplyTypes.html>`_
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