【Rust 日报】2021-07-18 -- Quickwit 高性能对象存储搜索引擎

如果用过 ES，会感到非常熟悉，具体包括以下步骤：

第一步：编写索引配置文件 ​​（以 wiki 为例），保存到当前目录：

{
"default_search_fields": ["body", "title"], // If you do not specify fields in your query, those fields will be used.
"field_mappings": [
{
"name": "body",
"type": "text"
},
{
"name": "title",
"type": "text"
},
{
"name": "url",
"type": "text",
"indexed": false, // Field not indexed, you will not be able to search on this field.
"stored": false // Field not stored.
}
]
}

第二步：创建索引：

$ https://blog.51cto.com/u_15683898/quickwit new --index-uri file:///$(pwd)/wikipedia --index-config-path https://blog.51cto.com/u_15683898/wiki_index_config.json

其中，​​ 是空文件夹

第三步：添加一些文档（需提前下载文档文件到当前目录）：

https://blog.51cto.com/u_15683898/quickwit index --index-uri file:///$(pwd)/wikipedia --input-path wiki-articles-10000.json

文档看起来是这样：

$ head -1 wiki-articles-10000.json
{"url":"https://en.wikipedia.org/wiki?curid=48687903","title":"Jeon Hye-jin (actress, born 1988)","body":" Jeon Hye-jin (actress, born 1988) Jeon Hye-jin (born June 17, 1988) is a South Korean actress. Personal life. Jeon married his "Smile, You" co-star Lee Chun-hee on March 11, 2011. Their daughter, Lee So Yu, was born on July 30, 2011. "}

第四步：启动 Server：

$ https://blog.51cto.com/u_15683898/quickwit serve --index-uri file:///$(pwd)/wikipedia

然后就可以进行 Query 了：

$ curl "http://0.0.0.0:8080/api/v1/wikipedia/search?query=barack+AND+obama"
# 指定 field
$ curl "http://0.0.0.0:8080/api/v1/wikipedia/search?query=body:barack+AND+obama"

文件目录如下：

$ tree . -L 2
.
├── quickwit
├── wiki-articles-10000.json
├── wiki_index_config.json
└── wikipedia
├── 7fc17075-3a78-4071-be53-e7941023c94a
└── quickwit.json

噢，差点忘了，它还同时提供 gRPC 接口，默认 8082 端口；）

文档：Search more with less | Search more with less

GitHub 地址：quickwit-inc/quickwit: Quickwit is a highly cost-efficient search engine in Rust.

最后，顺带再安利一下另一个酷炫的搜索引擎：meilisearch/MeiliSearch: Powerful, fast, and an easy to use search engine。

一旦 ​​ 后，只需：

$ libreddit

Reddit 就启动了。

主页：Libreddit

GitHub 地址：spikecodes/libreddit: Private front-end for Reddit written in Rust

QUIC: QUIC - Wikipedia

GitHub 地址：cloudflare/quiche: 🥧 Savoury implementation of the QUIC transport protocol and HTTP/3

正常打出来是这样的：

let complex_structure = vec![
vec![Some(1), Some(2), Some(3), None],
vec![Some(2), None],
vec![Some(4), Some(7)],
vec![Some(1), Some(2), Some(3), None],
];
// 单行
let one_line = format!("{:?}", complex_structure);
assert_eq!(one_line, "[[Some(1), Some(2), Some(3), None], [Some(2), None], [Some(4), Some(7)], [Some(1), Some(2), Some(3), None]]");
// 多行
let many_lines = format!("{:#?}", complex_structure);
assert_eq!(many_lines, "[
[
Some(
1,
),
Some(
2,
),
Some(
3,
),
None,
],
[
Some(
2,
),
None,
],
[
Some(
4,
),
Some(
7,
),
],
[
Some(
1,
),
Some(
2,
),
Some(
3,
),
None,
],
]")

使用本模块转为 String 打出来是这样的：

use debug2::pprint;
let complex_structure = vec![
vec![Some(1), Some(2), Some(3), None],
vec![Some(2), None],
vec![Some(4), Some(7)],
vec![Some(1), Some(2), Some(3), None],
vec![Some(2), None],
vec![Some(4), Some(7)],
vec![Some(1), Some(2), Some(3), None],
vec![Some(2), None],
vec![Some(4), Some(7)],
];
assert_eq!(
pprint(complex_structure),
"
[
[Some(1), Some(2), Some(3), None],
[Some(2), None],
[Some(4), Some(7)],
[Some(1), Some(2), Some(3), None],
[Some(2), None],
[Some(4), Some(7)],
[Some(1), Some(2), Some(3), None],
[Some(2), None],
[Some(4), Some(7)],
]"
);

看起来舒服多了。

GitHub 地址：aDotInTheVoid/debug2: Space Efficient Pretty Printer

Quilkin 是一种非透明 UDP 代理，专门设计用于大型多人专用游戏服务器部署，以确保安全性、访问控制、遥测数据、指标等。

GitHub 地址：googleforgames/quilkin: Quilkin is a non-transparent UDP proxy specifically designed for use with large scale multiplayer dedicated game server deployments, to ensure security, access control, telemetry data, metrics and more.

GitHub 地址：lmt-swallow/puppy-browser: An example implementation of a tiny Web browser for educational purposes.

社区学习交流平台订阅：

• Rustcc 论坛：支持 rss
• 微信公众号：Rust 语言中文社区