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dbsize.html
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<div class="section" id="dbsize">
<span id="id1"></span><h1>DBSIZE<a class="headerlink" href="#dbsize" title="Permalink to this headline">¶</a></h1>
<blockquote>
<div><div class="line-block">
<div class="line">可用版本： >= 1.0.0</div>
<div class="line">时间复杂度： O(1)</div>
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<p>返回当前数据库的 key 的数量。</p>
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<h2>返回值<a class="headerlink" href="#id2" title="Permalink to this headline">¶</a></h2>
<p>当前数据库的 key 的数量。</p>
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<h2>代码示例<a class="headerlink" href="#id3" title="Permalink to this headline">¶</a></h2>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">redis</span><span class="o">></span> <span class="n">DBSIZE</span>
<span class="p">(</span><span class="n">integer</span><span class="p">)</span> <span class="mi">5</span>
<span class="n">redis</span><span class="o">></span> <span class="n">SET</span> <span class="n">new_key</span> <span class="s2">"hello_moto"</span> <span class="c1"># 增加一个 key 试试</span>
<span class="n">OK</span>
<span class="n">redis</span><span class="o">></span> <span class="n">DBSIZE</span>
<span class="p">(</span><span class="n">integer</span><span class="p">)</span> <span class="mi">6</span>
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