https://github.com/openpeeps/powpow
PowPow 💥 A high-performance event notification library. Supporting UDP, TCP, HTTP/1.1 and WebSockets
https://github.com/openpeeps/powpow
epoll event-driven http iocp kqueue nim nim-package openpeeps posix server tcp tcp-server udp udp-server websocket
Last synced: about 5 hours ago
JSON representation
PowPow 💥 A high-performance event notification library. Supporting UDP, TCP, HTTP/1.1 and WebSockets
- Host: GitHub
- URL: https://github.com/openpeeps/powpow
- Owner: openpeeps
- License: lgpl-3.0
- Created: 2026-06-15T09:25:37.000Z (14 days ago)
- Default Branch: main
- Last Pushed: 2026-06-28T12:45:11.000Z (1 day ago)
- Last Synced: 2026-06-28T14:20:27.773Z (1 day ago)
- Topics: epoll, event-driven, http, iocp, kqueue, nim, nim-package, openpeeps, posix, server, tcp, tcp-server, udp, udp-server, websocket
- Language: Nim
- Homepage: https://openpeeps.github.io/powpow/
- Size: 948 KB
- Stars: 3
- Watchers: 1
- Forks: 0
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
PowPow 💥 A high-performance event notification library for Nim
nimble install powpow
## 😍 Key Features
- High-performance, event-driven networking library for Nim
- Support for low-level **UDP, TCP sockets**
- Built-in HTTP/1.1 server implementation
- Built-in **WebSocket support** with standalone and upgrade modes
- **HTTP over Unix Domain Sockets** (UDS) support for super fast local IPC
- **Zero-copy file transmission** using `sendfile` (Unix) and `TransmitFile` (Windows)
- Chunked Request Body support for streaming uploads and large payloads
- Memory-efficient Multipart Form Data parsing and Raw Body handling for file uploads
- SIMD-accelerated parsing and formatting of HTTP messages
- Built on top of `epoll` (Linux), and `kqueue` (BSD, macOS), `IOCP` (Windows)
- Support for edge-triggered and level-triggered event notification
- Support for multiple event loops and multi-threaded applications
- Support for MIME type detection based on file extensions
- FileSystem Monitoring via `inotify` (Linux) and `kqueue` (BSD, macOS) (Windows - not yet implemented)
> [!NOTE]
> 💥 PowPow is experimental and under active development. The API may change without deprecation. If you are looking for a more stable and mature library, consider using [supranim](https://github.com/supranim/supranim) instead (based on LibEvent). 💥
> [!WARNING]
> 💥 This library is not production-ready and may contain bugs and security vulnerabilities. It has been tested on Linux and macOS, but may not work on all platforms. **Use it, test it, and do not hesitate to report any issues you find!** 💥
## Examples
Check examples in the `examples/` directory, or see the [API reference](https://openpeeps.github.io/powpow) for more details.
## Dummy Benchmarks
**Pow Pow is the #1 fastest HTTP server** from [Web Framework Benchmarks](https://web-frameworks-benchmark.netlify.app/result). Here you can find some wrk-based benchmarks I manually ran via Github Actions (see [latest results here](https://github.com/openpeeps/powpow/actions/runs/27644007710/job/81751133711))
- Single-threaded (keep-alive)
```
⚡ powpow HTTP server listening on http://localhost:9000
Press Ctrl+C to stop
Running 5s test @ http://127.0.0.1:9000/
4 threads and 100 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 1.02ms 61.67us 3.25ms 81.86%
Req/Sec 24.63k 818.23 26.67k 68.00%
489946 requests in 5.00s, 277.55MB read
Requests/sec: 97965.24
Transfer/sec: 55.50MB
```
- Single-threaded (connection close)
```
⚡ powpow HTTP server listening on http://localhost:9000
Press Ctrl+C to stop
Running 5s test @ http://127.0.0.1:9000/
4 threads and 100 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 1.97ms 202.12us 4.22ms 80.09%
Req/Sec 9.13k 3.62k 18.16k 71.43%
184469 requests in 5.10s, 103.62MB read
Requests/sec: 36174.22
Transfer/sec: 20.32MB
```
- Multi-threaded (keep-alive)
```
worker #0 ready
worker #2 ready
⚡ powpow accepting on 0.0.0.0:9000 with 4 workers (SO_REUSEPORT)
worker #1 ready
worker #3 ready
Running 5s test @ http://127.0.0.1:9000/
4 threads and 100 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 786.79us 1.11ms 11.73ms 84.24%
Req/Sec 50.98k 3.97k 86.53k 91.50%
1018820 requests in 5.03s, 526.62MB read
Requests/sec: 202743.27
Transfer/sec: 104.80MB
```
- Multi-threaded (connection close)
```
worker #0 ready
worker #2 ready
⚡ powpow accepting on 0.0.0.0:9000 with 4 workers (SO_REUSEPORT)
worker #3 ready
worker #1 ready
Running 5s test @ http://127.0.0.1:9000/
4 threads and 100 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 1.31ms 0.95ms 15.44ms 67.66%
Req/Sec 13.24k 614.80 14.91k 81.50%
264133 requests in 5.01s, 135.27MB read
Requests/sec: 52687.29
Transfer/sec: 26.98MB
```
### ❤ Contributions & Support
- 🐛 Found a bug? [Create a new Issue](https://github.com/openpeeps/powpow/issues)
- 👋 Wanna help? [Fork it!](https://github.com/openpeeps/powpow/fork)
| | |
|---|---|
| 
| Switch to **Open-Source LLM models** via OpenCode AI, choosing from a variety of powerful models such as DeepSeek, Qwen, Kimi, GLM-5, MiniMax, MiMo. 🍕 [Use our referral link to get started!](https://opencode.ai/go?ref=BHMEEK48QX)|
### 🎩 License
LGPLv3 license. [Made by Humans from OpenPeeps](https://github.com/openpeeps).
Copyright OpenPeeps & Contributors — All rights reserved.
