Worked on the dragonflydb/dragonfly repository to deliver a targeted performance optimization for tiered storage workloads. Focused on the OpStrLen function, the developer implemented an early-return mechanism that directly retrieves the size of external entries when no modifications are pending, thereby reducing unnecessary disk reads. This C++ backend development effort lowered latency for string length operations and improved throughput by minimizing I/O overhead. The solution was carefully validated to ensure correctness across all code paths, maintaining reliability for both modified and unmodified entries. Documentation was provided to highlight the performance gains and cost-efficiency improvements achieved through this optimization.