gnet is an event-driven networking framework that is fast and lightweight. It makes direct epoll and kqueue syscalls rather than using the standard Go net package and works in a similar manner as netty and libuv, which makes
gnet achieve a much higher performance than Go net.
gnet sells itself as a high-performance, lightweight, non-blocking, event-driven networking framework written in pure Go which works on transport layer with TCP/UDP protocols and Unix Domain Socket , so it allows developers to implement their own protocols(HTTP, RPC, WebSocket, Redis, etc.) of application layer upon
gnet for building diversified network applications, for instance, you get an HTTP Server or Web Framework if you implement HTTP protocol upon
gnet while you have a Redis Server done with the implementation of Redis protocol upon
gnet and so on.
gnet derives from the project:
evio while having a much higher performance and more features.
- High-performance event-loop under networking model of multiple threads/goroutines
- Built-in goroutine pool powered by the library ants
- Built-in memory pool with bytes powered by the library bytebufferpool
- Lock-free during the entire runtime
- Concise and easy-to-use APIs
- Efficient, reusable and scalable memory buffer: Ring-Buffer
- Supporting multiple protocols/IPC mechanism:
Unix Domain Socket
- Supporting multiple load-balancing algorithms:
- Supporting two event-driven mechanisms:
epollon Linux and
- Supporting asynchronous write operation
- Flexible ticker event
- SO_REUSEPORT socket option
- Built-in multiple codecs to encode/decode network frames into/from TCP stream: LineBasedFrameCodec, DelimiterBasedFrameCodec, FixedLengthFrameCodec and LengthFieldBasedFrameCodec, referencing netty codec, also supporting customized codecs
- Supporting Windows platform with
event-driven mechanism of IOCPGo stdlib: net
- Implementation of
Benchmarks on TechEmpower
# Hardware Environment CPU: 28 HT Cores Intel(R) Xeon(R) Gold 5120 CPU @ 2.20GHz Mem: 32GB RAM OS : Ubuntu 18.04.3 4.15.0-88-generic #88-Ubuntu Net: Switched 10-gigabit ethernet Go : go1.14.x linux/amd64
This is the top 50 on the framework ranking of all programming languages consists of a total of 422 frameworks from all over the world where
gnet is the runner-up.
This is the full framework ranking of Go and
gnet tops all the other frameworks, which makes
gnet the fastest networking framework in Go.
To see the full ranking list, visit TechEmpower Plaintext Benchmark.
Contrasts to the similar networking libraries
On Linux (epoll)
# Machine information OS : Ubuntu 20.04/x86_64 CPU : 8 CPU cores, AMD EPYC 7K62 48-Core Processor Memory : 16.0 GiB # Go version and settings Go Version : go1.16.5 linux/amd64 GOMAXPROCS : 8 # Benchmark parameters TCP connections : 500/1000/5000/10000 Packet size : 512/1024/2048/4096/8192/16384/32768/65536 bytes Test duration : 15s
On MacOS (kqueue)
# Machine information OS : MacOS Big Sur/x86_64 CPU : 6 CPU cores, Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz Memory : 16.0 GiB # Go version and settings Go Version : go1.16.5 darwin/amd64 GOMAXPROCS : 12 # Benchmark parameters TCP connections : 300/400/500/600/700 Packet size : 512/1024/2048/4096/8192 bytes Test duration : 15s
Please visit the official website for more details about architecture, usage and other information of
Source files of
gnet are distributed under the MIT license found in the LICENSE file.
Please read the Contributing Guidelines before opening a PR and thank you to all the developers who already made contributions to
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🎡 User cases
The following companies/organizations use
gnet as the underlying network service in production.
If you have
gnet integrated into projects, feel free to open a pull request refreshing this list of user cases.
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💵 Paid Support
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gnet and want the author to help develop it, or bug fix/fast resolution/consultation which takes a lot of effort, you can request paid support here.
🔑 JetBrains OS licenses
gnet had been being developed with
GoLand IDE under the free JetBrains Open Source license(s) granted by JetBrains s.r.o., hence I would like to express my thanks here.