Mryange commented on code in PR #2071:
URL: https://github.com/apache/doris-website/pull/2071#discussion_r1964905345
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i18n/zh-CN/docusaurus-plugin-content-docs/current/query-acceleration/dictionary.md:
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@@ -0,0 +1,433 @@
+---
+{
+ "title": "字典表（实验性功能）",
+ "language": "zh-CN"
+}
+---
+
+<!--
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements. See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership. The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License. You may obtain a copy of the License at
+ http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing,
+software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, either express or implied. See the License for the
+specific language governing permissions and limitations
+under the License.
+-->
+
+## 概述
+
+字典表（Dictionary）是 Doris 提供的一种用于加速 JOIN
操作的特殊数据结构。它通过将常用的键值对预先加载到内存中，实现快速的查找操作，从而提升查询性能。字典表特别适用于需要频繁进行键值查找的场景。
+
+## 使用场景
+
+字典表主要适用于以下场景：
+
+1. 需要频繁进行键值查找的场景
+2. 维度表较小，可以完全加载到内存中
+3. 数据更新频率相对较低的场景
+4. 需要优化 JOIN 操作性能的场景
Review Comment:
我感觉可以提一嘴，我们这个字典是一对一的，不是join那种可以一对多的
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