相同的 SELECT 语句，这条 SELECT 语句被实际执行。</p>
<pre>test=&gt; SELECT * FROM table_cache_ok WHERE a = 1;
LOG:   DB node id: 0 backend pid: 11203 statement: SELECT * FROM table_cache_ok WHERE a = 1;
</pre>

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<h2 id="white_and_black_list">白名单和黑名单</h2>
<h3 id="whitelist">只缓存某些表的结果</h3>

<h4 id="whitelist_config">配置</h4>
<p>如果你只想缓存某些表的结果，�