Borrowed Strings: API Designs That Cut 94% of Allocations

The 6ms latency improvement from one character change — how &str over String transformed our hot path performance Borrowed Strings: API Designs That Cut 94% of Allocations The 6ms latency improvement from one character change — how &str over String transformed our hot path performance String borrowing eliminates ownership transfer costs — APIs designed around &str instead of String prevent allocations and enable zero-copy performance. One character change in our API signature — from