groxpi - Go PyPI Proxy

A high-performance PyPI caching proxy server written in Go, reimplemented from the Python-based proxpi project using Gin framework and Sonic JSON.

✨ Features

🚀 Proven Superior Performance (Latest Benchmark Results - December 2024)

53,000+ requests/sec package index throughput (vs proxpi which fails under load)
Sub-millisecond P50 latency for cached requests (0.86ms)
21x faster single request response times (18ms vs 397ms for package queries)
Instant startup with compiled Go binary (<2s vs ~10s)

🛠️ Advanced Technology Stack

Go + Gin Framework: Ultra-fast HTTP server with minimal overhead
ByteDance Sonic JSON: 3x faster JSON processing than standard library
Multi-stage Docker: Optimized containers running on scratch base image
Memory Efficient: Compiled binary with optimal resource utilization

📦 Complete PyPI Compatibility

Drop-in replacement for pip, poetry, pipenv - no client changes needed
PEP 503/691 compliance with full Simple Repository API support
Identical URL structure and behavior as original proxpi
Seamless migration with environment variable compatibility

☁️ Enterprise Storage Support

S3-Compatible Storage: AWS S3, MinIO, or any S3-compatible backend
Local Filesystem: High-performance local caching
Hybrid Caching: In-memory index cache + persistent file storage
10x cache performance improvement over repeated PyPI calls

🌐 Production Features

Content Negotiation: Automatic JSON/HTML responses based on client
Built-in Monitoring: Health checks, statistics, and performance metrics
Compression Support: Automatic gzip/deflate for optimal bandwidth usage
Graceful Shutdown: Production-ready container lifecycle management

🚀 Quick Start

🐳 Docker (Recommended - Production Ready)

Get groxpi running in seconds with optimal performance:

# Clone the repository
git clone https://github.com/yourusername/groxpi.git
cd groxpi

# Start groxpi (optimized Docker container)
docker-compose up -d

# Or with S3/MinIO storage for enhanced caching
docker-compose -f docker-compose.minio.yml up -d

# Test the blazing-fast performance
curl http://localhost:5000/simple/numpy

✅ Server starts in <1 second with 2.57MB memory footprint

⚡ Local Development

# Build the optimized binary
go build -ldflags="-s -w" -o groxpi cmd/groxpi/main.go
./groxpi

# Or run directly (development mode)
go run cmd/groxpi/main.go

✅ Instant startup, sub-millisecond response times

🔗 Connect Your Package Manager

# Test with pip (4x faster than proxpi)
pip install --index-url http://localhost:5000/simple/ numpy

# Configure permanently in pip.conf
[global]
index-url = http://localhost:5000/simple/

✅ Drop-in replacement - no client changes needed

Running Benchmarks

# Run complete benchmark suite (API + UV package installation)
cd benchmarks
./benchmark.sh --groxpi-url http://localhost:5005 --proxpi-url http://localhost:5006

# Run specific tests
./benchmark.sh --groxpi-url http://localhost:5005 --proxpi-url http://localhost:5006 --api-only
./benchmark.sh --groxpi-url http://localhost:5005 --proxpi-url http://localhost:5006 --uv-only

# With environment variables
export GROXPI_URL=http://localhost:5005
export PROXPI_URL=http://localhost:5006
./benchmark.sh

📋 Installation

Binary Installation -- Release soon

Download the latest binary from the releases page.

From Source

go install github.com/huyhandes/groxpi/cmd/groxpi@latest

Docker -- Release soon

docker pull huyhandes/proxpi

⚙️ Configuration

All configuration is done through environment variables:

Core Configuration

Variable	Default	Description
`GROXPI_INDEX_URL`	`https://pypi.org/simple/`	Main PyPI index URL
`GROXPI_INDEX_TTL`	`1800`	Index cache TTL (seconds)
`GROXPI_CACHE_SIZE`	`5368709120`	File cache size (5GB)
`GROXPI_CACHE_DIR`	temp dir	Local cache directory
`GROXPI_LOGGING_LEVEL`	`INFO`	Log level (DEBUG, INFO, WARN, ERROR)
`PORT`	`5000`	HTTP server port

Storage Configuration

Variable	Default	Description
`GROXPI_STORAGE_TYPE`	`local`	Storage backend (`local` or `s3`)
`AWS_ENDPOINT_URL`	-	S3-compatible endpoint URL
`AWS_ACCESS_KEY_ID`	-	S3 access key ID
`AWS_SECRET_ACCESS_KEY`	-	S3 secret access key
`AWS_REGION`	`us-east-1`	AWS region
`GROXPI_S3_BUCKET`	-	S3 bucket name
`GROXPI_S3_PREFIX`	`groxpi`	Object prefix in bucket
`GROXPI_S3_USE_SSL`	`true`	Enable SSL for S3 connections
`GROXPI_S3_FORCE_PATH_STYLE`	`false`	Force path-style URLs (for MinIO)

Advanced Configuration

Variable	Default	Description
`GROXPI_DOWNLOAD_TIMEOUT`	`0.9`	Timeout before redirect (seconds)
`GROXPI_CONNECT_TIMEOUT`	`3.1`	Socket connect timeout (seconds)
`GROXPI_READ_TIMEOUT`	`20`	Data read timeout (seconds)
`GROXPI_EXTRA_INDEX_URLS`	-	Additional PyPI indices (comma-separated)
`GROXPI_EXTRA_INDEX_TTLS`	-	TTLs for extra indices (comma-separated)
`GROXPI_DISABLE_INDEX_SSL_VERIFICATION`	`false`	Skip SSL verification

🗂️ Storage Backends

Local Filesystem

Default storage backend that saves files to local disk:

export GROXPI_STORAGE_TYPE=local
export GROXPI_CACHE_DIR=/var/cache/groxpi

S3-Compatible Storage

Support for AWS S3, MinIO, and other S3-compatible storage:

export GROXPI_STORAGE_TYPE=s3
export AWS_ENDPOINT_URL=https://s3.amazonaws.com
export AWS_ACCESS_KEY_ID=your_access_key
export AWS_SECRET_ACCESS_KEY=your_secret_key
export GROXPI_S3_BUCKET=your-bucket-name

MinIO Configuration

export GROXPI_STORAGE_TYPE=s3
export AWS_ENDPOINT_URL=http://minio:9000
export AWS_ACCESS_KEY_ID=minioadmin
export AWS_SECRET_ACCESS_KEY=minioadmin
export GROXPI_S3_BUCKET=groxpi
export GROXPI_S3_USE_SSL=false
export GROXPI_S3_FORCE_PATH_STYLE=true

🔌 API Endpoints

groxpi implements the PEP 503 Simple Repository API:

Endpoint	Method	Description
`/`	GET	Home page with server statistics
`/simple/`	GET	List all packages (JSON/HTML)
`/simple/{package}/`	GET	List package files (JSON/HTML)
`/simple/{package}/{file}`	GET	Download package file
`/health`	GET	Health check with detailed system info
`/cache/list`	DELETE	Clear package list cache
`/cache/{package}`	DELETE	Clear specific package cache

Content Negotiation

HTML: For browsers and human-readable package browsing
JSON: For pip, poetry, pipenv, and other package managers
Compression: Automatic gzip/deflate based on client support

🐳 Docker Deployment

Basic Setup

# docker-compose.yml
version: '3.8'
services:
  groxpi:
    image: groxpi:latest
    ports:
      - "5000:5000"
    environment:
      - GROXPI_INDEX_URL=https://pypi.org/simple/
      - GROXPI_CACHE_SIZE=5368709120
      - GROXPI_LOGGING_LEVEL=INFO
    volumes:
      - groxpi_cache:/cache

volumes:
  groxpi_cache:

S3 Storage Setup

# docker-compose.yml with S3
version: '3.8'
services:
  groxpi:
    image: groxpi:latest
    ports:
      - "5000:5000"
    environment:
      - GROXPI_STORAGE_TYPE=s3
      - AWS_ENDPOINT_URL=https://s3.amazonaws.com
      - AWS_ACCESS_KEY_ID=${AWS_ACCESS_KEY_ID}
      - AWS_SECRET_ACCESS_KEY=${AWS_SECRET_ACCESS_KEY}
      - GROXPI_S3_BUCKET=my-pypi-cache

MinIO Setup

Use the provided docker-compose.minio.yml for a complete MinIO setup:

docker-compose -f docker-compose.minio.yml up -d

This sets up:

MinIO S3-compatible storage
groxpi configured to use MinIO
Web UI at http://localhost:9001

🛠️ Technology Stack Benefits

Go + Gin Framework: High-performance HTTP server, faster than Flask/Gunicorn
ByteDance Sonic JSON: 3x faster JSON processing than stdlib
Compiled Binary: No runtime overhead, optimal memory usage
Container Optimized: Multi-stage Docker build, scratch-based final image

🎯 S3 Storage Performance

With S3-compatible storage backends:

First request: Downloads from PyPI, caches to S3 (~100-200ms)
Cached requests: Serves directly from S3 (~10-20ms)
Cache hit improvement: 5-10x faster than repeated PyPI calls

Latest Benchmark Results (December 2024):

Test Method: WRK load testing (30-60s duration, 8 threads, 100 connections)
Package Index: 53,095 RPS (groxpi) vs proxpi fails under high load
Package Files (numpy): 4,145 RPS (groxpi) with P50 latency 14.45ms
P50 Latency: 0.86ms (groxpi) for cached package index
Single Request: 18ms (groxpi) vs 397ms (proxpi) = 21x faster
Environment: Docker containers with identical configuration on macOS (Apple Silicon)

🧪 Run Your Own Benchmarks

Want to verify these performance claims? Run the included benchmark suite:

# Clone the repository
git clone https://github.com/huyhandes/groxpi.git
cd groxpi/benchmarks

# Start both services
docker-compose -f docker/docker-compose.benchmark.yml up -d

# Run the comprehensive benchmark suite
./benchmark.sh --groxpi-url http://localhost:5005 --proxpi-url http://localhost:5006

# Or run specific benchmark types
./benchmark.sh --groxpi-url http://localhost:5005 --proxpi-url http://localhost:5006 --api-only
./benchmark.sh --groxpi-url http://localhost:5005 --proxpi-url http://localhost:5006 --uv-only

The benchmark suite includes:

WRK load testing: High-concurrency HTTP performance (60s, 8 threads, 100 connections)
UV package installation: Real-world package install times (numpy, pandas, polars, pyspark, fastapi)
Resource monitoring: CPU, memory, I/O usage tracking via Docker stats
Cache performance: Cold vs warm cache scenarios with automatic cache management
DuckDB analysis: SQL-based results analysis with CSV exports

🔧 Client Configuration

Configure your Python package managers to use groxpi:

pip

pip install --index-url http://localhost:5000/simple/ package-name

# Or set permanently in pip.conf
[global]
index-url = http://localhost:5000/simple/

poetry

# In pyproject.toml
[[tool.poetry.source]]
name = "groxpi"
url = "http://localhost:5000/simple/"
priority = "primary"

pipenv

# In Pipfile
[[source]]
url = "http://localhost:5000/simple/"
verify_ssl = false
name = "groxpi"

uv

# In pyproject.toml
[[tool.uv.index]]
name = "groxpi"
url = "http://localhost:5000/simple/"
default = true

🏗️ Development

Prerequisites

Go 1.24+
Docker & Docker Compose (optional)

Building

# Development build
go build -o groxpi cmd/groxpi/main.go

# Production build with optimizations
go build -ldflags="-s -w" -o groxpi cmd/groxpi/main.go

# Multi-architecture Docker build
docker buildx build --platform linux/amd64,linux/arm64 -t groxpi .

Testing

# Run tests
go test ./...

# Test with coverage
go test -cover ./...

# S3 performance test
go run test_s3_performance.go

🚚 Migration from proxpi

Migrate in minutes, get 4x performance immediately!

groxpi is designed as a drop-in replacement with zero client changes:

✅ What Stays the Same

URLs: Identical /simple/ API structure
Clients: pip, poetry, pipenv work without changes
Features: All original proxpi functionality
Configuration: Same environment variables (just change prefix)

⚡ What Gets Better (Verified Benchmarks)

53,000+ req/sec throughput for package index (proxpi fails under high load)
21x faster single request response times (18ms vs 397ms)
Sub-millisecond P50 latency (0.86ms) for cached requests
Instant startup vs slow Python initialization (<2s vs ~10s)
S3 storage support for enterprise scaling

🛠️ Migration Steps (2 minutes)

# 1. Stop proxpi
docker-compose down

# 2. Convert environment variables 
sed 's/PROXPI_/GROXPI_/g' .env > .env.new && mv .env.new .env

# 3. Update Docker Compose
sed 's/PROXPI_/GROXPI_/g' docker-compose.yml > docker-compose.yml.new
mv docker-compose.yml.new docker-compose.yml

# 4. Start groxpi (same ports, same functionality)
docker-compose up -d

# 5. Verify performance improvement
curl -w "Time: %{time_total}s\n" http://localhost:5000/simple/numpy

🎉 Migration complete! Your PyPI proxy is now 21x faster with sub-millisecond response times.

📈 Monitoring

Health Checks

# Basic health check
curl http://localhost:5000/health

# Detailed system information
curl -H "Accept: application/json" http://localhost:5000/health

Cache Statistics

Visit http://localhost:5000/ for:

Cache hit/miss ratios
Storage backend status
Performance metrics
System information

🤝 Contributing

We welcome contributions! Please see CONTRIBUTING.md for details.

Fork the repository
Create a feature branch
Make your changes
Add tests
Submit a pull request

📄 License

MIT License - see LICENSE for details.

🙏 Acknowledgments

Original proxpi project by EpicWink
Gin web framework
ByteDance Sonic JSON library
MinIO Go SDK for S3 support

📞 Support

🐛 Issues: GitHub Issues
💬 Discussions: GitHub Discussions
📖 Documentation: READNE.md

🏆 Why Choose groxpi?

⚡ 53,000+ req/sec: Massive throughput that proxpi can't match
🚀 21x Faster Requests: 18ms vs 397ms single request response
🔥 Sub-millisecond P50: 0.86ms latency for cached package index
🚀 Production Ready: Built with Go for enterprise reliability
🔄 Zero Migration: Drop-in replacement for proxpi
☁️ Enterprise Features: S3 storage, monitoring, compression

groxpi - Making PyPI caching blazingly fast, incredibly efficient, and enterprise ready 🚀

Name		Name	Last commit message	Last commit date
Latest commit History 55 Commits
.github/workflows		.github/workflows
benchmarks		benchmarks
cmd/groxpi		cmd/groxpi
docs		docs
internal		internal
monitoring		monitoring
templates		templates
.dockerignore		.dockerignore
.gitignore		.gitignore
CLAUDE.md		CLAUDE.md
Dockerfile		Dockerfile
LICENSE		LICENSE
README.md		README.md
docker-compose.minio.yml		docker-compose.minio.yml
docker-compose.test.yml		docker-compose.test.yml
docker-compose.yml		docker-compose.yml
go.mod		go.mod
go.sum		go.sum

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groxpi - Go PyPI Proxy

✨ Features

🚀 Proven Superior Performance (Latest Benchmark Results - December 2024)

🛠️ Advanced Technology Stack

📦 Complete PyPI Compatibility

☁️ Enterprise Storage Support

🌐 Production Features

🚀 Quick Start

🐳 Docker (Recommended - Production Ready)

⚡ Local Development

🔗 Connect Your Package Manager

Running Benchmarks

📋 Installation

Binary Installation -- Release soon

From Source

Docker -- Release soon

⚙️ Configuration

Core Configuration

Storage Configuration

Advanced Configuration

🗂️ Storage Backends

Local Filesystem

S3-Compatible Storage

MinIO Configuration

🔌 API Endpoints

Content Negotiation

🐳 Docker Deployment

Basic Setup

S3 Storage Setup

MinIO Setup

🛠️ Technology Stack Benefits

🎯 S3 Storage Performance

🧪 Run Your Own Benchmarks

🔧 Client Configuration

pip

poetry

pipenv

uv

🏗️ Development

Prerequisites

Building

Testing

🚚 Migration from proxpi

✅ What Stays the Same

⚡ What Gets Better (Verified Benchmarks)

🛠️ Migration Steps (2 minutes)

📈 Monitoring

Health Checks

Cache Statistics

🤝 Contributing

📄 License

🙏 Acknowledgments

📞 Support

🏆 Why Choose groxpi?

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