⚓ L-36: Ultra-Fast Sharded Versioning Engine

L-36 is a high-performance, in-memory data store with native versioning support, specifically engineered for extreme write-heavy workloads and real-time diffing.

🚀 Performance Benchmarks

Tested on Ubuntu Latest (GitHub Actions) with 2 vCPUs:

Metric	Throughput	Latency (avg)
Page Creation (Baseline)	18,600+ RPS	~54µs
Heavy Lifecycle (with Diffs)	11,500+ RPS	~90µs

Note: L-36 is a compute-bound engine. Performance scales linearly with CPU core count. On a 16-core machine, expected throughput exceeds 80,000+ RPS.

🛠 Core Architecture

L-36's battleship-grade performance is built on four architectural pillars:

1. 36-Way Horizontal Sharding: Data is distributed across 36 independent shards. This eliminates global mutex contention, allowing massive parallel access on multi-core systems.
2. Reverse Delta Storage: We store the latest version in full and a chain of backward patches (Diffs). This provides O(1) access to current data while minimizing RAM footprint.
3. Advanced Diff Engine: Powered by optimized Google DMP (Diff-Match-Patch) with row-level pre-processing and custom memoization.
4. Parallel Persistence: Each of the 36 shards flushes to its own independent JSON file. This "36-Safe" approach ensures asynchronous, non-blocking I/O operations.

📦 Installation & Usage

Clone the repository

git clone https://github.com/DenQ/L36.git

Install dependencies

make install

Run the engine

make run

⚖️ License

Distributed under the MIT License. See LICENSE for more information.

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Copyright (c) 2026 Denis Ivanov