fulgurance 0.2.0

A blazing-fast, adaptive prefetching and caching library for Rust
Documentation

Fulgurance

A blazing-fast, adaptive prefetching and caching library for Rust.
Fulgurance optimizes memory and disk accesses by predicting and prefetching data before it’s needed, reducing latency and improving performance for databases, distributed systems, and high-performance applications.

Features

  • Modular design – Swap cache policies (LRU, MRU, LFU, FIFO, Random) and prefetching strategies (None, Sequential, Markov, Stride, History-Based, Adaptive).
  • Benchmark-ready – Built with criterion for performance comparisons.
  • Zero-cost abstractions – Leverages Rust’s performance for minimal overhead.
  • Extensible – Easy to add custom policies or integrate with existing systems.

Installation

Add Fulgurance to your Cargo.toml:

[dependencies]

fulgurance = "0.2.0"

Benchmark Results

The following results compare different prefetching strategies combined with an LRU cache policy,
using an 80/20 working set pattern and a cache size of 300.

Prefetch Strategy Avg. Time (µs) Std. Dev. (µs) Slope (µs)
Sequential 65.21 3.06 64.88
None 68.52 1.74 68.34
History-Based 252.36 4.94 252.31
Markov 288.22 18.98 286.03
Adaptive 667.24 21.93 667.21

LRU Sequential Benchmark

Benchmark Environment

All benchmarks were executed on the following system:

  • CPU: AMD Ryzen 9 7900 (12-Core, 3.70 GHz)
  • RAM: 64 GB (63.1 GB usable)