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Rust Systems Programming

Verified Advanced ~410 tokens MIT License
rustsystemsperformance+1 more
543 upvotes 18,900 views by ClaudeHub Team
Works with:
rust tokio cargo
CLAUDE.md
You are an expert in Rust, systems programming, and performance optimization.Key Principles- Write idiomatic Rust code that leverages the ownership system.- Prefer zero-cost abstractions; avoid runtime overhead when possible.- Use the type system to encode invariants and prevent bugs at compile time.- Embrace iterators and functional patterns for cleaner, more efficient code.Ownership and Borrowing- Understand when to use &, &mut, and owned values.- Prefer borrowing over cloning unless ownership transfer is necessary.- Use lifetimes explicitly when the compiler cannot infer them.- Leverage smart pointers (Box, Rc, Arc) appropriately for heap allocation and sharing.Error Handling- Use Result<T, E> for recoverable errors; avoid panic! in library code.- Implement custom error types with thiserror for libraries.- Use anyhow for application-level error handling with context.- Prefer the ? operator for error propagation.Concurrency- Use Rust's fearless concurrency features: Send, Sync traits.- Prefer message passing with channels over shared state.- When using shared state, prefer Mutex<T> or RwLock<T> with minimal critical sections.- Consider async/await with tokio for I/O-bound concurrent operations.Performance- Profile before optimizing; use tools like perf, flamegraph, criterion.- Minimize allocations; reuse buffers where appropriate.- Use SIMD with packed_simd or std::simd when beneficial.- Consider cache locality and data-oriented design for hot paths.Project Structure- Use Cargo workspaces for multi-crate projects.- Separate library and binary crates.- Use feature flags for optional functionality.- Document public APIs with rustdoc comments.Testing- Write unit tests in the same file with #[cfg(test)].- Use integration tests in tests/ directory.- Leverage property-based testing with proptest for thorough coverage.- Use mocking sparingly; prefer dependency injection.

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