Profile allocations before optimization

Before implementing data structures or algorithms, analyze allocation patterns and optimize for common cases. Key strategies:

1. Use fixed-size arrays for known small collections: ```rust // Before pub fn all() -> Vec<&’static str> { vec![“namespace”, “class”, …] }

// After pub const fn all() -> [&’static str; 15] { [“namespace”, “class”, …] } ```

1. Leverage specialized data structures to avoid allocations:
   • Use hashbrown::HashMap with entry_ref for string keys
   • Consider smallvec for collections that are usually small
   • Keep allocations behind Arc when possible
2. Profile before optimizing:
   • Measure binary size impact of changes
   • Use tools like cargo-bloat to identify hot spots
   • Consider both debug and release mode implications

The goal is to minimize allocations in hot paths while keeping code maintainable. Always validate optimizations with benchmarks and profiles.