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https://github.com/cloudwego/netpoll

A high-performance non-blocking I/O networking framework focusing on RPC scenarios.
https://github.com/cloudwego/netpoll

golang high-performance net network-programming rpc

Last synced: about 2 months ago
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A high-performance non-blocking I/O networking framework focusing on RPC scenarios.

Host: GitHub
URL: https://github.com/cloudwego/netpoll
Owner: cloudwego
License: apache-2.0
Created: 2021-02-25T07:24:02.000Z (over 3 years ago)
Default Branch: develop
Last Pushed: 2024-07-25T07:19:31.000Z (about 2 months ago)
Last Synced: 2024-07-25T12:29:05.008Z (about 2 months ago)
Topics: golang, high-performance, net, network-programming, rpc
Language: Go
Homepage:
Size: 575 KB
Stars: 3,988
Watchers: 73
Forks: 465
Open Issues: 19
Metadata Files:
- Readme: README.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md
- Codeowners: .github/CODEOWNERS

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README

        # CloudWeGo-Netpoll

[中文](README_CN.md)

[![Release](https://img.shields.io/github/v/release/cloudwego/netpoll)](https://github.com/cloudwego/netpoll/releases)

[![WebSite](https://img.shields.io/website?up_message=cloudwego&url=https%3A%2F%2Fwww.cloudwego.io%2F)](https://www.cloudwego.io/)

[![License](https://img.shields.io/github/license/cloudwego/netpoll)](https://github.com/cloudwego/netpoll/blob/main/LICENSE)

[![Go Report Card](https://goreportcard.com/badge/github.com/cloudwego/netpoll)](https://goreportcard.com/report/github.com/cloudwego/netpoll)

[![OpenIssue](https://img.shields.io/github/issues/cloudwego/netpoll)](https://github.com/cloudwego/netpoll/issues)

[![ClosedIssue](https://img.shields.io/github/issues-closed/cloudwego/netpoll)](https://github.com/cloudwego/netpoll/issues?q=is%3Aissue+is%3Aclosed)

![Stars](https://img.shields.io/github/stars/cloudwego/netpoll)

![Forks](https://img.shields.io/github/forks/cloudwego/netpoll)

## Introduction

[Netpoll][Netpoll] is a high-performance non-blocking I/O networking framework, which

focused on RPC scenarios, developed by [ByteDance][ByteDance].

RPC is usually heavy on processing logic and therefore cannot handle I/O serially. But Go's standard

library [net][net] is designed for blocking I/O APIs, so that the RPC framework can

only follow the One Conn One Goroutine design. It will waste a lot of cost for context switching, due to a large number

of goroutines under high concurrency. Besides, [net.Conn][net.Conn] has

no API to check Alive, so it is difficult to make an efficient connection pool for RPC framework, because there may be a

large number of failed connections in the pool.

On the other hand, the open source community currently lacks Go network libraries that focus on RPC scenarios. Similar

repositories such as: [evio][evio], [gnet][gnet], etc., are all

focus on scenarios like [Redis][Redis], [HAProxy][HAProxy].

But now, [Netpoll][Netpoll] was born and solved the above problems. It draws inspiration

from the design of [evio][evio] and [netty][netty], has

excellent [Performance](#performance), and is more suitable for microservice architecture.

Also [Netpoll][Netpoll] provides a number of [Features](#features), and it is recommended

to replace [net][net] in some RPC scenarios.

We developed the RPC framework [Kitex][Kitex] and HTTP framework [Hertz][Hertz]

based on [Netpoll][Netpoll], both with industry-leading performance.

[Examples][netpoll-examples] show how to build RPC client and server

using [Netpoll][Netpoll].

For more information, please refer to [Document](#document).

## Features

* **Already**

    - [LinkBuffer][LinkBuffer] provides nocopy API for streaming reading and writing

    - [gopool][gopool] provides high-performance goroutine pool

    - [mcache][mcache] provides efficient memory reuse

    - `IsActive` supports checking whether the connection is alive

    - `Dialer` supports building clients

    - `EventLoop` supports building a server

    - TCP, Unix Domain Socket

    - Linux, macOS (operating system)

* **Future**

    - [io_uring][io_uring]

    - Shared Memory IPC

    - TLS

    - UDP

* **Unsupported**

    - Windows (operating system)

## Performance

Benchmark should meet the requirements of industrial use. 

In the RPC scenario, concurrency and timeout are necessary support items.

We provide the [netpoll-benchmark][netpoll-benchmark] project to track and compare 

the performance of [Netpoll][Netpoll] and other frameworks under different conditions for reference.

More benchmarks reference [kitex-benchmark][kitex-benchmark] and [hertz-benchmark][hertz-benchmark].

## Reference

* [Official Website](https://www.cloudwego.io)

* [Getting Started](docs/guide/guide_en.md)

* [Design](docs/reference/design_en.md)

* [Why DATA RACE](docs/reference/explain.md)

[Netpoll]: https://github.com/cloudwego/netpoll

[net]: https://github.com/golang/go/tree/master/src/net

[net.Conn]: https://github.com/golang/go/blob/master/src/net/net.go

[evio]: https://github.com/tidwall/evio

[gnet]: https://github.com/panjf2000/gnet

[netty]: https://github.com/netty/netty

[Kitex]: https://github.com/cloudwego/kitex

[Hertz]: https://github.com/cloudwego/hertz

[netpoll-benchmark]: https://github.com/cloudwego/netpoll-benchmark

[kitex-benchmark]: https://github.com/cloudwego/kitex-benchmark

[hertz-benchmark]: https://github.com/cloudwego/hertz-benchmark

[netpoll-examples]:https://github.com/cloudwego/netpoll-examples

[ByteDance]: https://www.bytedance.com

[Redis]: https://redis.io

[HAProxy]: http://www.haproxy.org

[LinkBuffer]: nocopy_linkbuffer.go

[gopool]: https://github.com/bytedance/gopkg/tree/develop/util/gopool

[mcache]: https://github.com/bytedance/gopkg/tree/develop/lang/mcache

[io_uring]: https://github.com/axboe/liburing