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| 18 | <!-- This is a (PRE) block. Make sure it's left aligned or your toc title will be off. --> |
| 19 | <b>MsetCommand: Contents</b><br> <a href="#MSET _key1_ _value1_ _key2_ _value2_ ... _keyN_ _valueN_ (Redis >">MSET _key1_ _value1_ _key2_ _value2_ ... _keyN_ _valueN_ (Redis ></a><br> <a href="#MSETNX _key1_ _value1_ _key2_ _value2_ ... _keyN_ _valueN_ (Redis >">MSETNX _key1_ _value1_ _key2_ _value2_ ... _keyN_ _valueN_ (Redis ></a><br> <a href="#MSET Return value">MSET Return value</a><br> <a href="#MSETNX Return value">MSETNX Return value</a> |
| 20 | </div> |
| 21 | |
| 22 | <h1 class="wikiname">MsetCommand</h1> |
| 23 | |
| 24 | <div class="summary"> |
| 25 | |
| 26 | </div> |
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| 28 | <div class="narrow"> |
| 29 | #sidebar <a href="StringCommandsSidebar.html">StringCommandsSidebar</a><h1><a name="MSET _key1_ _value1_ _key2_ _value2_ ... _keyN_ _valueN_ (Redis >">MSET _key1_ _value1_ _key2_ _value2_ ... _keyN_ _valueN_ (Redis ></a></h1> 1.1) = |
| 30 | <h1><a name="MSETNX _key1_ _value1_ _key2_ _value2_ ... _keyN_ _valueN_ (Redis >">MSETNX _key1_ _value1_ _key2_ _value2_ ... _keyN_ _valueN_ (Redis ></a></h1> 1.1) = |
| 31 | <i>Time complexity: O(1) to set every key</i><blockquote>Set the the respective keys to the respective values. MSET will replace oldvalues with new values, while MSETNX will not perform any operation at alleven if just a single key already exists.</blockquote> |
| 32 | <blockquote>Because of this semantic MSETNX can be used in order to set different keysrepresenting different fields of an unique logic object in a way thatensures that either all the fields or none at all are set.</blockquote> |
| 33 | <blockquote>Both MSET and MSETNX are atomic operations. This means that for instanceif the keys A and B are modified, another client talking to Redis can eithersee the changes to both A and B at once, or no modification at all.</blockquote> |
| 34 | <h2><a name="MSET Return value">MSET Return value</a></h2><a href="ReplyTypes.html">Status code reply</a> Basically +OK as MSET can't fail<h2><a name="MSETNX Return value">MSETNX Return value</a></h2><a href="ReplyTypes.html">Integer reply</a>, specifically:<br/><br/><pre class="codeblock python" name="code"> |
| 35 | 1 if the all the keys were set |
| 36 | 0 if no key was set (at least one key already existed) |
| 37 | </pre> |
| 38 | </div> |
| 39 | |
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projects / redis.git / blame