Lioran S3 Rust storage engine uses detailed PUT timing to pinpoint performance bottlenecks

Lioran S3's Rust storage engine incorporates granular timing instrumentation for its PUT operations. The system measures durations for nine distinct stages, from network reception to final RocksDB metadata commit. This allows engineers to identify the exact bottleneck, such as network transfer or filesystem synchronization, rather than guessing. The detailed breakdown enables evidence-based optimization by changing one variable at a time. The instrumentation is designed to depoliticize performance tuning by providing concrete data across all system components.