https://plumephp.com/tags/%E6%90%9C%E7%B4%A2/Recent content in 搜索 on PlumePHPHugozh-CNThu, 13 Aug 2026 14:10:00 +0800https://plumephp.com/elasticsearch-practice/Thu, 13 Aug 2026 14:10:00 +0800https://plumephp.com/elasticsearch-practice/<p>Elasticsearch 是全球最流行的分布式搜索引擎，基于 Lucene 构建，提供近实时搜索、聚合分析与全文检索能力。</p> <h2 id="1-核心概念">1. 核心概念</h2> <table> <thead> <tr> <th>概念</th> <th>类比 RDBMS</th> <th>说明</th> </tr> </thead> <tbody> <tr> <td><strong>Index</strong></td> <td>Database</td> <td>索引，逻辑命名空间</td> </tr> <tr> <td><strong>Type</strong></td> <td>Table</td> <td>7.x 已废弃，8.x 移除</td> </tr> <tr> <td><strong>Document</strong></td> <td>Row</td> <td>一条 JSON 记录</td> </tr> <tr> <td><strong>Field</strong></td> <td>Column</td> <td>字段</td> </tr> <tr> <td><strong>Mapping</strong></td> <td>Schema</td> <td>字段类型定义</td> </tr> <tr> <td><strong>Shard</strong></td> <td>Partition</td> <td>分片</td> </tr> <tr> <td><strong>Replica</strong></td> <td>Replica</td> <td>副本</td> </tr> </tbody> </table> <h2 id="2-倒排索引">2. 倒排索引</h2> <pre tabindex="0"><code>文档: Doc1: &#34;Elasticsearch is a search engine&#34; Doc2: &#34;Lucene is the core of Elasticsearch&#34; 倒排索引: &#34;elasticsearch&#34; → [Doc1, Doc2] &#34;search&#34; → [Doc1] &#34;engine&#34; → [Doc1] &#34;lucene&#34; → [Doc2] &#34;core&#34; → [Doc2] </code></pre><p>ES 还存储：</p>