cache-line-optimization

What problem does it solve?

False sharing occurs when multiple threads modify data that shares a cache line, causing cache invalidations and severe performance penalties. This skill teaches you how to align data structures to 64-byte cache lines in Rust to isolate hot fields and preserve throughput in multi-threaded code.

Core Features & Use Cases

• Cache-line padded wrappers for hot shared fields using 64-byte alignment
• Patterns for common data structures: producers/consumers ring buffers, per-bucket histograms, and atomic counters
• Compile-time validation of alignment and practical benchmarking guidance to verify improvements
• Practical guidance on when padding helps and how to measure its impact

Quick Start

Implement a 64-byte cache-line padded wrapper for a shared atomic field and benchmark the performance impact on your multi-threaded Rust code.