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<b>SetnxCommand: Contents</b><br> <a href="#SETNX _key_ _value_">SETNX _key_ _value_</a><br> <a href="#Return value">Return value</a><br> <a href="#See also">See also</a>
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<h1 class="wikiname">SetnxCommand</h1>
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<h1><a name="SETNX _key_ _value_">SETNX _key_ _value_</a></h1>
<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 "SET if Not eXists".</blockquote>
<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">
1 if the key was set
0 if the key was not set
</pre><h2><a name="See also">See also</a></h2>
<ul><li> <a href="SetCommand.html">SET</a></li></ul>
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