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<span id="id1"></span><h1>EXPIREAT<a class="headerlink" href="#expireat" title="Permalink to this headline">¶</a></h1>
<p><strong>EXPIREAT key timestamp</strong></p>
<p><a class="reference internal" href="#expireat">EXPIREAT</a> 的作用和 <a class="reference internal" href="expire.html"><em>EXPIRE</em></a> 类似，都用于为 <code class="docutils literal"><span class="pre">key</span></code> 设置生存时间。</p>
<p>不同在于 <a class="reference internal" href="#expireat">EXPIREAT</a> 命令接受的时间参数是 UNIX 时间戳(unix timestamp)。</p>
<dl class="docutils">
<dt><strong>可用版本：</strong></dt>
<dd>>= 1.2.0</dd>
<dt><strong>时间复杂度：</strong></dt>
<dd>O(1)</dd>
<dt><strong>返回值：</strong></dt>
<dd><div class="first last line-block">
<div class="line">如果生存时间设置成功，返回 <code class="docutils literal"><span class="pre">1</span></code> 。</div>
<div class="line">当 <code class="docutils literal"><span class="pre">key</span></code> 不存在或没办法设置生存时间，返回 <code class="docutils literal"><span class="pre">0</span></code> 。</div>
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<div class="highlight-python"><div class="highlight"><pre>redis> SET cache www.google.com
OK
redis> EXPIREAT cache 1355292000 # 这个 key 将在 2012.12.12 过期
(integer) 1
redis> TTL cache
(integer) 45081860
</pre></div>
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