【视频】OSO 如何为 Rust 构建运行时反射系统

https://youtu.be/J7Aosp1Uauo

NoProto: 比 BSON 快 10 倍

和 BSON 一样，是一种二进制 JSON 数据格式。具有零依赖、no_std 支持、WASM 支持等特性。

性能比较：

使用实例：

use no_proto::error::NP_Error;
use no_proto::NP_Factory;
use no_proto::collection::table::NP_Table;

// JSON is used to describe schema for the factory
// Each factory represents a single schema
// One factory can be used to serialize/deserialize any number of buffers
let user_factory = NP_Factory::new(r#"{
    "type": "table",
    "columns": [
        ["name",   {"type": "string"}],
        ["age",    {"type": "u16", "default": 0}],
        ["tags",   {"type": "list", "of": {
            "type": "string"
        }}]
    ]
}"#)?;


// create a new empty buffer
let mut user_buffer = user_factory.empty_buffer(None); // optional capacity, optional address size (u16 by default)

// set an internal value of the buffer, set the  "name" column
user_buffer.set(&["name"], "Billy Joel")?;

// assign nested internal values, sets the first tag element
user_buffer.set(&["tags", "0"], "first tag")?;

// get an internal value of the buffer from the "name" column
let name = user_buffer.get::<&str>(&["name"])?;
assert_eq!(name, Some("Billy Joel"));

// close buffer and get internal bytes
let user_bytes: Vec<u8> = user_buffer.close();

// open the buffer again
let user_buffer = user_factory.open_buffer(user_bytes);

// get nested internal value, first tag from the tag list
let tag = user_buffer.get::<&str>(&["tags", "0"])?;
assert_eq!(tag, Some("first tag"));

// get nested internal value, the age field
let age = user_buffer.get::<u16>(&["age"])?;
// returns default value from schema
assert_eq!(age, Some(0u16));

// close again
let user_bytes: Vec<u8> = user_buffer.close();


// we can now save user_bytes to disk, 
// send it over the network, or whatever else is needed with the data

Mundane: google 出品 Rust 密码学库

基于 BoringSSL，难以被滥用，符合开发者使用习惯并且性能优异。

https://github.com/google/mundane

FFI-Safe 生态：瘦 Trait 对象(Thin Trait Objects)

https://adventures.michaelfbryan.com/posts/ffi-safe-polymorphism-in-rust/

隐私聊天 APP Signal 使用 Rust 完成群组通话功能

详细代码：

https://github.com/signalapp/ringrtc/blob/master/src/rust/src/core/group_call.rs

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