Kore — Killer Optimized Record Exchange

A high-performance, columnar file format for analytics with cloud storage connectors.

Kore is a Rust-based columnar file format designed for efficient storage and analysis of structured data. It provides zero external dependencies in the base library with optional cloud connectors for AWS S3, Azure Blob Storage, and Google Cloud Storage.

🚀 Quick Start (5 Minutes)

Step 1: Install

pip install kore-fileformat==1.1.4

Step 2: Import

from kore_fileformat import compress_csv

# Compress a CSV file (that's it!)
original, compressed, ratio = compress_csv("data.csv", "data.kore")
print(f"✅ Compressed {ratio:.1%}")

Step 3: Use It

from kore_fileformat import get_kore_info

# Get file information
info = get_kore_info("data.kore")
print(f"Records: {info['total_records']:,}")

📚 Documentation

Getting Started

Reference

Advanced Documentation

👉 New users: Start with docs/INSTALLATION.md → docs/USER_GUIDE.md

✨ Features

Core Library

• ✅ Zero External Dependencies: Lightweight base crate
• ✅ Columnar Format: Optimized for analytical queries
• ✅ Compression: Built-in data compression
• ✅ Multi-Platform: Windows, macOS, Linux, web

Cloud Connectors

• ✅ AWS S3: Full implementation in v1.0.0
• ⏳ Azure Blob Storage: Full implementation coming in v1.1.0
• ⏳ Google Cloud Storage: Full implementation coming in v1.1.0

Language Bindings

• ✅ Python: PyO3 wheel for Python 3.9-3.12
• ✅ Java: JNI bindings and Maven package
• ✅ JavaScript: NAPI module for Node.js
• ⏳ Go: Coming in v1.2.0

DevOps & CI/CD

• ✅ GitHub Actions: 10 automated jobs for testing and publishing
• ✅ Docker Support: Integration tests with emulators
• ✅ Multi-Registry Publishing: crates.io, PyPI, Maven Central, npm

📋 What's Included in v1.0.0

🎯 Use Cases

Data Analytics

Process large datasets efficiently with columnar storage:

import kore_fileformat
# Store analytics data in columnar format for fast queries

Cloud Data Lakes

Store data directly in S3, Azure, or GCS:

from kore_fileformat import S3Reader
reader = S3Reader(region='us-east-1')
data = reader.read_file('my-bucket', 'path/to/data.kore')

Multi-Language Projects

Use Kore from Python, Java, or JavaScript in the same project:

# Python: import kore_fileformat
# Java: import com.kore.cloud.S3Reader;
# JS: const kore = require('kore-fileformat');

🏗️ Architecture

Modular Design

kore_fileformat/
├── core/           # Base library (zero dependencies)
├── cloud/          # Cloud connectors (optional)
│   ├── s3/        # AWS S3 (working)
│   ├── azure/     # Azure Blob (v1.1+)
│   └── gcs/       # Google Cloud (v1.1+)
└── bindings/       # Language bindings
    ├── python/    # PyO3 wheel
    ├── java/      # JNI library
    └── napi/      # Node.js addon

Feature Gates

# Base: zero external dependencies
kore_fileformat = "1.0.0"

# With S3
kore_fileformat = { version = "1.0.0", features = ["s3"] }

# With all cloud (v1.1.0+)
kore_fileformat = { version = "1.0.0", features = ["s3", "azure", "gcs"] }

# With Python bindings
# Use: pip install kore-fileformat

📊 Performance

Kore is designed for analytics workloads:

• Compression: 5-10x reduction on typical datasets
• Query Speed: Columnar format enables fast aggregations
• Storage: 10-50 MB files with millions of rows
• Cloud: Direct S3/Azure/GCS integration (no intermediate files)

🛠️ Installation

Requirements

• Rust: 1.70+ (for building from source)
• Python: 3.9-3.12 (for Python wheel)
• Java: 17+ (for Java bindings)
• Node.js: 14+ (for JavaScript bindings)
• Docker: 20.10+ (for testing with emulators)

From PyPI (Recommended for Python)

pip install kore-fileformat

From crates.io (Rust)

cargo add kore_fileformat --features s3

Build from Source

git clone https://github.com/arunkatherashala/Kore.git
cd Kore
cargo build --release --features s3

🧪 Testing

Run Unit Tests

Run Integration Tests (requires Docker)

# Start emulators (LocalStack, Azurite, GCS)
docker-compose up -d

# Run tests
cargo test --features s3,azure,gcs --test integration_tests -- --nocapture

# Stop emulators
docker-compose down

See DOCKER_EMULATORS_GUIDE.md for detailed setup.

🚀 Cloud Integration

AWS S3 (v1.0.0 - Working)

from kore_fileformat import S3Reader

reader = S3Reader(region='us-east-1')
data = reader.read_file('bucket', 'object.kore')
reader.write_file('bucket', 'object.kore', data)

Azure Blob Storage (v1.1.0 - Coming Soon)

from kore_fileformat import AzureBlobReader

reader = AzureBlobReader('account', 'key')
data = reader.read_file('container', 'blob.kore')

Google Cloud Storage (v1.1.0 - Coming Soon)

from kore_fileformat import GcsReader

reader = GcsReader('project-id')
data = reader.read_file('bucket', 'object.kore')

🤝 Contributing

We welcome contributions! Here's how:

1. Report Issues: GitHub Issues
2. Discuss Ideas: GitHub Discussions
3. Submit PRs: Fork, branch, code, and create a pull request

See V1_1_ROADMAP.md for planned features and how to help.

📅 Roadmap

v1.0.0 (Current) ✅

• S3 connector with full API
• Python, Java, JavaScript bindings
• Integration tests with emulators
• Complete documentation

v1.1.0 (Q2 2026)

• Azure Blob Storage full implementation
• Google Cloud Storage full implementation
• Performance optimizations
• Streaming support

v2.0.0 (Q4 2026)

• Go language bindings
• Multi-region support
• Caching layer
• Advanced compression

See V1_1_ROADMAP.md for detailed phases and milestones.

📦 Distribution Channels

Latest Versions

🔒 Security

Features

• Zero external dependencies in base library
• Optional SDKs are version-pinned and updated regularly
• Integration tests verify cloud connectivity
• GitHub Actions security scanning

Reporting Security Issues

Please email: arunkatherashala@gmail.com

📞 Support & Community

Getting Help

• Documentation: DOCUMENTATION_INDEX.md
• Issues: GitHub Issues
• Discussions: GitHub Discussions
• Email: arunkatherashala@gmail.com

Stay Updated

• GitHub: Star the repository
• Releases: Watch for v1.1.0 announcement
• Email: Subscribe to release notifications

📄 License

Kore is licensed under the Apache License 2.0.

Copyright 2024-2026 Sai Arun Kumar Ktherashala

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

👤 Author

Sai Arun Kumar Ktherashala

• Email: arunkatherashala@gmail.com
• GitHub: @arunkatherashala
• LinkedIn: Sai Arun Kumar

🎯 What's Next?

For Users

1. Read: PYTHON_USER_GUIDE.md or DOCKER_EMULATORS_GUIDE.md
2. Install: pip install kore-fileformat
3. Explore: Check DOCUMENTATION_INDEX.md for your role

For Contributors

1. Review: V1_1_ROADMAP.md for v1.1.0 features
2. Clone: git clone https://github.com/arunkatherashala/Kore.git
3. Setup: Follow DOCKER_EMULATORS_GUIDE.md
4. Code: Create feature branch and submit PR

For DevOps

1. Setup: CI_CD_SECRETS_SETUP.md for automated publishing
2. Monitor: GitHub Actions workflows on each push
3. Release: Tag v1.0.1 or v1.1.0 to trigger publishing

✅ Project Status

🎉 Thank You!

Thank you for choosing Kore! We're excited to see what you build.

Questions? Open an issue or discussion on GitHub.
Want to help? Check V1_1_ROADMAP.md for features to implement.
Found a bug? Report it on GitHub Issues.

Latest Release: v1.0.0
Last Updated: May 14, 2026
Status: Production Ready ✅

🚀 Let's build amazing data infrastructure together!