Sixcy is an innovative container format crafted for high-performance data storage and efficient transmission. With a primary focus on streaming capability, it also ensures robust data recoverability and adaptable compression strategies to meet diverse data handling needs.

Key Features

• Streaming-First Design: Optimized for single-pass reading and writing, making it particularly suitable for network streams and large-scale data processing applications.
• Data Recoverability: Incorporates self-describing blocks and periodic checkpoints, allowing for data recovery even in scenarios of truncation or partial corruption of the archive.
• Codec Polymorphism: Allows for multiple compression algorithms (like Zstd and LZ4) to coexist within a single archive, permitting block-level optimization tailored to specific data types.
• Plugin Architecture: Supports third-party and proprietary compression algorithms through a well-defined plugin interface, facilitating the integration of closed-source extensions.
• Metadata-First Indexing: Features a centralized indexing system that enables rapid random access and efficient file listing, avoiding the need to scan the entire archive for information.
• Rust Reference Implementation: Provides a high-performance, memory-safe implementation that acts as the authoritative reference for the Sixcy specification.

Project Structure

• src/: This directory holds the core library and command-line interface implementation, encompassing critical components like lib.rs for library entry, superblock.rs for header management, and block.rs for data block handling.
• tests/: Contains integration tests to validate the format's integrity.
• benches/: Includes performance benchmarks assessing compression and I/O efficiency.
• spec.md: Outlines a detailed specification of the binary format.
• security.md: Describes the public security profile and associated threat model.

Benchmarks

Preliminary benchmarking results can be found in BENCHMARK.md, which detail the compression ratios and throughput under real-world workloads utilizing the Canterbury Corpus.

Documentation

• The comprehensive binary format specification is accessible in spec.md.
• Security considerations and reporting guidelines are discussed in security.md.

Release Roadmap

• v0.1.x (current): Offers a reference implementation of the .6cy container format and associated features conducive to format validation and research.
• v0.2.0 (planned): Aims to introduce the official runtime package and broader codec support in future updates.

This project is currently under active development and is primarily meant for benchmarking, research, and ecosystem prototyping; thus, it is not yet recommended for production use.