/doc/SetnxCommand.html

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  18. <b>SetnxCommand: Contents</b><br>&nbsp;&nbsp;<a href="#SETNX _key_ _value_">SETNX _key_ _value_</a><br>&nbsp;&nbsp;&nbsp;&nbsp;<a href="#Return value">Return value</a><br>&nbsp;&nbsp;&nbsp;&nbsp;<a href="#See also">See also</a>
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  21.                 <h1 class="wikiname">SetnxCommand</h1>
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  28.                     <h1><a name="SETNX _key_ _value_">SETNX _key_ _value_</a></h1>
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  29. <i>Time complexity: O(1)</i><blockquote>SETNX works exactly like <a href="SetCommand.html">SET</a> with the only difference thatif the key already exists no operation is performed.SETNX actually means &quot;SET if Not eXists&quot;.</blockquote>
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  30. <h2><a name="Return value">Return value</a></h2><a href="ReplyTypes.html">Integer reply</a>, specifically:<br/><br/><pre class="codeblock python" name="code">
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  31. 1 if the key was set
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  32. 0 if the key was not set
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  33. </pre><h2><a name="See also">See also</a></h2>
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  34. <ul><li> <a href="SetCommand.html">SET</a></li></ul>
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