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# [Riot 搜索引擎](https://github.com/go-ego/riot)
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Go Open Source, Distributed, Simple and efficient full text search engine.
# Features
* [高效索引和搜索](/docs/zh/benchmarking.md)（1M 条微博 500M 数据28秒索引完，1.65毫秒搜索响应时间，19K 搜索 QPS）
* 支持中文分词（使用 [gse 分词包](https://github.com/go-ego/gse)并发分词，速度 27MB/秒）
* 支持[逻辑搜索](https://github.com/go-ego/riot/blob/master/docs/zh/logic.md)
* 支持中文转拼音搜索(使用 [gpy](https://github.com/go-ego/gpy) 中文转拼音)
* 支持计算关键词在文本中的[紧邻距离](/docs/zh/token_proximity.md)（token proximity）
* 支持计算[BM25相关度](/docs/zh/bm25.md)
* 支持[自定义评分字段和评分规则](/docs/zh/custom_scoring_criteria.md)
* 支持[在线添加、删除索引](/docs/zh/realtime_indexing.md)
* 支持多种[持久存储](/docs/zh/persistent_storage.md)
* 支持 heartbeat
* 支持[分布式索引和搜索](https://github.com/go-ego/riot/tree/master/data)
* 可实现[分布式索引和搜索](/docs/zh/distributed_indexing_and_search.md)
* 采用对商业应用友好的[Apache License v2](/LICENSE)发布
* [查看分词规则](https://github.com/go-ego/riot/blob/master/docs/zh/segmenter.md)
Riot v0.10.0 was released in Nov 2017, check the [Changelog](https://github.com/go-ego/riot/blob/master/docs/CHANGELOG.md) for the full details.
QQ 群: 120563750
## 安装/更新
```
go get -u github.com/go-ego/riot
```
## Requirements
需要 Go 版本至少 1.8
### Vendored Dependencies
Riot 使用 [dep](https://github.com/golang/dep) 管理 vendor 依赖, but we don't commit the vendored packages themselves to the Riot git repository. Therefore, a simple go get is not supported because the command is not vendor aware.
请用 dep 管理它, 运行 `dep ensure` 克隆依赖.
## [Build-tools](https://github.com/go-ego/re)
```
go get -u github.com/go-ego/re
```
### re riot
创建 riot 项目
```
$ re riot my-riotapp
```
### re run
运行我们创建的 riot 项目, 你可以导航到应用程序文件夹并执行:
```
$ cd my-riotapp && re run
```
## 使用
先看一个例子（来自 [simplest_example.go](/examples/simple/zh/main.go)）
```go
package main
import (
"log"
"github.com/go-ego/riot"
"github.com/go-ego/riot/types"
)
var (
// searcher 是协程安全的
searcher = riot.Engine{}
)
func main() {
// 初始化
searcher.Init(types.EngineOpts{
Using: 3,
GseDict: "zh",
// GseDict: "your gopath"+"/src/github.com/go-ego/riot/data/dict/dictionary.txt",
})
defer searcher.Close()
text := "此次百度收购将成中国互联网最大并购"
text1 := "百度宣布拟全资收购91无线业务"
text2 := "百度是中国最大的搜索引擎"
// 将文档加入索引，docId 从1开始
searcher.Index(1, types.DocData{Content: text})
searcher.Index(2, types.DocData{Content: text1}, false)
searcher.Index(3, types.DocData{Content: text2}, true)
// 等待索引刷新完毕
searcher.Flush()
// engine.FlushIndex()
// 搜索输出格式见 types.SearchResp 结构体
log.Print(searcher.Search(types.SearchReq{Text:"百度中国"}))
}
```
是不是很简单！
然后看看一个[入门教程](/docs/zh/codelab.md)，教你用不到200行 Go 代码实现一个微博搜索网站。
### 使用默认引擎:
```Go
package main
import (
"log"
"github.com/go-ego/riot"
"github.com/go-ego/riot/types"
)
var (
searcher = riot.New("zh")
)
func main() {
data := types.DocData{Content: `I wonder how, I wonder why
, I wonder where they are`}
data1 := types.DocData{Content: "所以, 你好, 再见"}
data2 := types.DocData{Content: "没有理由"}
searcher.Index(1, data)
searcher.Index(2, data1)
searcher.IndexDoc(3, data2)
searcher.Flush()
req := types.SearchReq{Text: "你好"}
search := searcher.Search(req)
log.Println("search...", search)
}
```
#### [查看更多例子](https://github.com/go-ego/riot/tree/master/examples)
#### [持久化的例子](https://github.com/go-ego/riot/blob/master/examples/store/main.go)
#### [逻辑搜索的例子](https://github.com/go-ego/riot/blob/master/examples/logic/main.go)
#### [拼音搜索的例子](https://github.com/go-ego/riot/blob/master/examples/pinyin/main.go)
#### [不同字典和语言例子](https://github.com/go-ego/riot/blob/master/examples/dict/main.go)
#### [benchmark](https://github.com/go-ego/riot/blob/master/examples/benchmark/benchmark.go)
#### [Riot 搜索模板, 客户端和字典](https://github.com/go-ego/riot/tree/master/data)
## 主要改进:
- 增加逻辑搜索 
- 增加拼音搜索 
- 增加分布式 
- 分词等改进 
- 增加更多 api
- 支持 heartbeat
- 修复 bug
- 删除依赖 cgo 的存储引擎, 增加 badger和 leveldb 持久化引擎
## Donate
支持 riot, [buy me a coffee](https://github.com/go-vgo/buy-me-a-coffee).
#### Paypal
Donate money by [paypal](https://www.paypal.me/veni0/25) to my account [vzvway@gmail.com](vzvway@gmail.com)
## 其它
* [为什么要有 riot 引擎](/docs/zh/why_riot.md)
* [联系方式](/docs/zh/feedback.md)
## License
Riot is primarily distributed under the terms of the Apache License (Version 2.0), base on [wukong](https://github.com/huichen/wukong).