【搜索引擎】Elasticsearch（一）：索引创建、数据插入、请求示例

- 一、索引设计
- - [1. 用户索引 `user`](#1. 用户索引 user)
  - [2. 视频索引 `video`](#2. 视频索引 video)
  - [3. 直播间索引 `live_room`](#3. 直播间索引 live_room)
- 二、测试数据构造
- 三、搜索示例及预期返回结构
- - [1. 用户搜索：按粉丝数降序](#1. 用户搜索：按粉丝数降序)
  - [2. 用户搜索：按财富等级升序](#2. 用户搜索：按财富等级升序)
  - [3. 视频搜索：只返回精选视频，按点赞量降序](#3. 视频搜索：只返回精选视频，按点赞量降序)
  - [4. 视频搜索：正文匹配 + 精选优先 + 点赞量排序](#4. 视频搜索：正文匹配 + 精选优先 + 点赞量排序)
  - [5. 直播间搜索：标题匹配 "Tai Chi"，按主播粉丝数降序](#5. 直播间搜索：标题匹配 "Tai Chi"，按主播粉丝数降序)
  - [6. 直播间搜索：主播昵称匹配 "Zhang"，按直播等级升序](#6. 直播间搜索：主播昵称匹配 "Zhang"，按直播等级升序)
  - [7. 综合排序示例：用户按粉丝数降序 + 财富等级降序（多级排序）](#7. 综合排序示例：用户按粉丝数降序 + 财富等级降序（多级排序）)
- 四、清理索引

一、索引设计

1. 用户索引 `user`

新增字段：

fans_count (long)：粉丝数
wealth_level (integer)：财富等级（1-100）
live_level (integer)：直播等级（1-100）

bash 复制代码

curl -s -u "$AUTH" -X PUT "$ES/user" -H 'Content-Type: application/json' -d'
{
  "settings": {
    "number_of_shards": 1,
    "number_of_replicas": 0,
    "analysis": {
      "analyzer": {
        "nickname_analyzer": {
          "type": "custom",
          "tokenizer": "standard",
          "filter": ["lowercase"]
        }
      }
    }
  },
  "mappings": {
    "properties": {
      "uid": { "type": "keyword" },
      "nickname": {
        "type": "text",
        "analyzer": "nickname_analyzer",
        "fields": { "keyword": { "type": "keyword", "ignore_above": 256 } }
      },
      "avatar": { "type": "keyword", "index": false },
      "fans_count": { "type": "long" },
      "wealth_level": { "type": "integer" },
      "live_level": { "type": "integer" },
      "created_at": { "type": "date" }
    }
  }
}
' | jq .

2. 视频索引 `video`

新增字段：

is_featured (boolean)：是否精选
like_count (long)：历史点赞量（已有，确保为 long）

bash 复制代码

curl -s -u "$AUTH" -X PUT "$ES/video" -H 'Content-Type: application/json' -d'
{
  "settings": {
    "number_of_shards": 1,
    "number_of_replicas": 0,
    "analysis": {
      "analyzer": {
        "content_analyzer": {
          "type": "custom",
          "tokenizer": "standard",
          "filter": ["lowercase"]
        }
      }
    }
  },
  "mappings": {
    "properties": {
      "video_id": { "type": "keyword" },
      "title": { "type": "text", "analyzer": "content_analyzer" },
      "content": { "type": "text", "analyzer": "content_analyzer" },
      "author_uid": { "type": "keyword" },
      "duration": { "type": "integer" },
      "is_featured": { "type": "boolean" },
      "like_count": { "type": "long" },
      "publish_time": { "type": "date" }
    }
  }
}
' | jq .

3. 直播间索引 `live_room`

新增字段：

anchor_fans_count (long)：主播粉丝数（冗余存储，便于排序）
anchor_wealth_level (integer)：主播财富等级
anchor_live_level (integer)：主播直播等级

bash 复制代码

curl -s -u "$AUTH" -X PUT "$ES/live_room" -H 'Content-Type: application/json' -d'
{
  "settings": {
    "number_of_shards": 1,
    "number_of_replicas": 0,
    "analysis": {
      "analyzer": {
        "title_analyzer": {
          "type": "custom",
          "tokenizer": "standard",
          "filter": ["lowercase"]
        }
      }
    }
  },
  "mappings": {
    "properties": {
      "room_id": { "type": "keyword" },
      "title": {
        "type": "text",
        "analyzer": "title_analyzer",
        "fields": { "keyword": { "type": "keyword", "ignore_above": 512 } }
      },
      "anchor_uid": { "type": "keyword" },
      "anchor_nickname": {
        "type": "text",
        "analyzer": "title_analyzer",
        "fields": { "keyword": { "type": "keyword", "ignore_above": 256 } }
      },
      "status": { "type": "keyword" },
      "viewer_count": { "type": "integer" },
      "anchor_fans_count": { "type": "long" },
      "anchor_wealth_level": { "type": "integer" },
      "anchor_live_level": { "type": "integer" },
      "start_time": { "type": "date" }
    }
  }
}
' | jq .

二、测试数据构造

用户数据（含粉丝数、等级）

bash 复制代码

curl -s -u "$AUTH" -X POST "$ES/user/_doc" -H 'Content-Type: application/json' -d'
{"uid": "1001", "nickname": "Zhang Sanfeng", "avatar": "avatar1.jpg", "fans_count": 1500000, "wealth_level": 80, "live_level": 75, "created_at": "2024-01-01T00:00:00Z"}
' | jq .

curl -s -u "$AUTH" -X POST "$ES/user/_doc" -H 'Content-Type: application/json' -d'
{"uid": "1002", "nickname": "Zhang Wuji", "avatar": "avatar2.jpg", "fans_count": 980000, "wealth_level": 92, "live_level": 88, "created_at": "2024-01-02T00:00:00Z"}
' | jq .

curl -s -u "$AUTH" -X POST "$ES/user/_doc" -H 'Content-Type: application/json' -d'
{"uid": "1003", "nickname": "Linghu Chong", "avatar": "avatar3.jpg", "fans_count": 320000, "wealth_level": 65, "live_level": 70, "created_at": "2024-01-03T00:00:00Z"}
' | jq .

视频数据（含是否精选、点赞量）

bash 复制代码

curl -s -u "$AUTH" -X POST "$ES/video/_doc" -H 'Content-Type: application/json' -d'
{
  "video_id": "v001",
  "title": "Tai Chi Chuan Tutorial",
  "content": "Tai Chi is a traditional Chinese martial art that combines slow movements and deep breathing.",
  "author_uid": "1001",
  "duration": 600,
  "is_featured": true,
  "like_count": 125000,
  "publish_time": "2024-02-01T10:00:00Z"
}
' | jq .

curl -s -u "$AUTH" -X POST "$ES/video/_doc" -H 'Content-Type: application/json' -d'
{
  "video_id": "v002",
  "title": "Python Programming for Beginners",
  "content": "Learn Python basics: variables, loops, functions, and data structures.",
  "author_uid": "1002",
  "duration": 1800,
  "is_featured": false,
  "like_count": 89000,
  "publish_time": "2024-02-10T14:30:00Z"
}
' | jq .

curl -s -u "$AUTH" -X POST "$ES/video/_doc" -H 'Content-Type: application/json' -d'
{
  "video_id": "v003",
  "title": "Cooking Braised Pork Belly",
  "content": "Braised pork belly is a classic Chinese dish made with pork belly, sugar, and soy sauce.",
  "author_uid": "1003",
  "duration": 900,
  "is_featured": true,
  "like_count": 234000,
  "publish_time": "2024-02-15T18:00:00Z"
}
' | jq .

直播间数据（含主播粉丝数、等级）

bash 复制代码

curl -s -u "$AUTH" -X POST "$ES/live_room/_doc" -H 'Content-Type: application/json' -d'
{
  "room_id": "r001",
  "title": "Tai Chi Class with Zhang Sanfeng",
  "anchor_uid": "1001",
  "anchor_nickname": "Zhang Sanfeng",
  "status": "live",
  "viewer_count": 1234,
  "anchor_fans_count": 1500000,
  "anchor_wealth_level": 80,
  "anchor_live_level": 75,
  "start_time": "2024-03-01T20:00:00Z"
}
' | jq .

curl -s -u "$AUTH" -X POST "$ES/live_room/_doc" -H 'Content-Type: application/json' -d'
{
  "room_id": "r002",
  "title": "Qian Kun Great Move by Zhang Wuji",
  "anchor_uid": "1002",
  "anchor_nickname": "Zhang Wuji",
  "status": "ended",
  "viewer_count": 5678,
  "anchor_fans_count": 980000,
  "anchor_wealth_level": 92,
  "anchor_live_level": 88,
  "start_time": "2024-03-02T19:00:00Z"
}
' | jq .

curl -s -u "$AUTH" -X POST "$ES/live_room/_doc" -H 'Content-Type: application/json' -d'
{
  "room_id": "r003",
  "title": "Linghu Chong Playing Guqin",
  "anchor_uid": "1003",
  "anchor_nickname": "Linghu Chong",
  "status": "live",
  "viewer_count": 890,
  "anchor_fans_count": 320000,
  "anchor_wealth_level": 65,
  "anchor_live_level": 70,
  "start_time": "2024-03-03T21:30:00Z"
}
' | jq .

三、搜索示例及预期返回结构

1. 用户搜索：按粉丝数降序

请求：搜索昵称包含 "Zhang" 的用户，按粉丝数从高到低排序

bash 复制代码

curl -s -u "$AUTH" "$ES/user/_search" -H 'Content-Type: application/json' -d'
{
  "query": { "match": { "nickname": "Zhang" } },
  "sort": [
    { "fans_count": { "order": "desc" } }
  ]
}
' | jq .

预期返回结构 （hits 部分）：

json 复制代码

{
  "hits": {
    "total": { "value": 2, "relation": "eq" },
    "max_score": null,
    "hits": [
      {
        "_index": "user",
        "_source": { "uid": "1001", "nickname": "Zhang Sanfeng", "fans_count": 1500000, ... },
        "sort": [1500000]
      },
      {
        "_index": "user",
        "_source": { "uid": "1002", "nickname": "Zhang Wuji", "fans_count": 980000, ... },
        "sort": [980000]
      }
    ]
  }
}

2. 用户搜索：按财富等级升序

bash 复制代码

curl -s -u "$AUTH" "$ES/user/_search" -H 'Content-Type: application/json' -d'
{
  "query": { "match_all": {} },
  "sort": [
    { "wealth_level": { "order": "asc" } }
  ]
}
' | jq .

3. 视频搜索：只返回精选视频，按点赞量降序

bash 复制代码

curl -s -u "$AUTH" "$ES/video/_search" -H 'Content-Type: application/json' -d'
{
  "query": { "term": { "is_featured": true } },
  "sort": [
    { "like_count": { "order": "desc" } }
  ]
}
' | jq .

预期返回：v003 (like 234000) 在前，v001 (125000) 在后。

4. 视频搜索：正文匹配 + 精选优先 + 点赞量排序

bash 复制代码

curl -s -u "$AUTH" "$ES/video/_search" -H 'Content-Type: application/json' -d'
{
  "query": {
    "bool": {
      "must": { "match": { "content": "Chinese" } },
      "filter": { "term": { "is_featured": true } }
    }
  },
  "sort": [
    { "like_count": { "order": "desc" } }
  ]
}
' | jq .

5. 直播间搜索：标题匹配 "Tai Chi"，按主播粉丝数降序

bash 复制代码

curl -s -u "$AUTH" "$ES/live_room/_search" -H 'Content-Type: application/json' -d'
{
  "query": { "match": { "title": "Tai Chi" } },
  "sort": [
    { "anchor_fans_count": { "order": "desc" } }
  ]
}
' | jq .

6. 直播间搜索：主播昵称匹配 "Zhang"，按直播等级升序

bash 复制代码

curl -s -u "$AUTH" "$ES/live_room/_search" -H 'Content-Type: application/json' -d'
{
  "query": { "match": { "anchor_nickname": "Zhang" } },
  "sort": [
    { "anchor_live_level": { "order": "asc" } }
  ]
}
' | jq .

7. 综合排序示例：用户按粉丝数降序 + 财富等级降序（多级排序）

bash 复制代码

curl -s -u "$AUTH" "$ES/user/_search" -H 'Content-Type: application/json' -d'
{
  "query": { "match_all": {} },
  "sort": [
    { "fans_count": { "order": "desc" } },
    { "wealth_level": { "order": "desc" } }
  ]
}
' | jq .

四、清理索引

bash 复制代码

curl -s -u "$AUTH" -X DELETE "$ES/user" | jq .
curl -s -u "$AUTH" -X DELETE "$ES/video" | jq .
curl -s -u "$AUTH" -X DELETE "$ES/live_room" | jq .

配方：

需求：我要设计一个可以通过"（1）用户uid、用户昵称搜用户；（2）视频正文搜视频，（3）直播间标题和主播uid、主播昵称搜直播间。""用户和直播间支持粉丝数、主播财富等级、主播直播等级排序，视频支持是否精选，历史点赞量排序"的搜索引擎，

问：怎么设计索引

PS：以及给我构造一些测试数据，给出curl，并给出预期返回结构（注意使用内置分词器）

【搜索引擎】Elasticsearch（一）：索引创建、数据插入、请求示例

目录

一、索引设计

1. 用户索引 user

2. 视频索引 video

3. 直播间索引 live_room

二、测试数据构造

用户数据（含粉丝数、等级）

视频数据（含是否精选、点赞量）

直播间数据（含主播粉丝数、等级）

三、搜索示例及预期返回结构

1. 用户搜索：按粉丝数降序

2. 用户搜索：按财富等级升序

3. 视频搜索：只返回精选视频，按点赞量降序

4. 视频搜索：正文匹配 + 精选优先 + 点赞量排序

5. 直播间搜索：标题匹配 "Tai Chi"，按主播粉丝数降序

6. 直播间搜索：主播昵称匹配 "Zhang"，按直播等级升序

7. 综合排序示例：用户按粉丝数降序 + 财富等级降序（多级排序）

四、清理索引

1. 用户索引 `user`

2. 视频索引 `video`

3. 直播间索引 `live_room`