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Kenneth Reitz
48 lines
1.2 KiB
ReStructuredText
48 lines
1.2 KiB
ReStructuredText
`|Redis Documentation| <index.html>`_
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**NonexistentCommands: Contents**
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`HGETSET <#HGETSET>`_
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`SET with expire <#SET%20with%20expire>`_
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`ZADDNX <#ZADDNX>`_
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NonexistentCommands
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===================
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A list of commands that don't exist in Redis, but can be
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accomplished in a different way.
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This is a list of commands that don't exist in Redis, but can be
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accomplished in a different way, usually by means of
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`WATCH/MULTI/EXEC <MultiExecCommand.html>`_.
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For better performance, you can pipeline multiple commands.
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HGETSET
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=======
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`GETSET <GetsetCommand.html>`_ for Hashes.
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::
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WATCH foo
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old_value = HGET foo field
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MULTI
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HSET foo field new_value
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EXEC
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SET with expire
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===============
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See `SETEX <SetexCommand.html>`_.
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ZADDNX
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======
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Add an element to a sorted set, only if the element doesn't already
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exist (by default, `ZADD <ZaddCommand.html>`_ would update the
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element's score if it already exists).
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`See thread <http://groups.google.com/group/redis-db/browse_thread/thread/fc4c79d72e5bd346/6cdc07ecc36b81e7>`_.
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::
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WATCH foo
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score = ZSCORE foo bar
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IF score != NIL
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MULTI
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ZADD foo 1 bar
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EXEC
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ENDIF
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.. |Redis Documentation| image:: redis.png |