Worked on stabilizing high-volume storage metrics processing in the fluent/fluent-bit repository, focusing on resolving a critical Windows x64 crash during metrics formatting. Addressed a divide-by-zero issue by refactoring the code to use 64-bit arithmetic with explicit uint64_t types, eliminating a 32-bit overflow path and aligning behavior across Windows LLP64 and Linux LP64 systems. This change improved production reliability under heavy I/O workloads by ensuring timer-triggered metrics processing remained robust. Leveraged C programming and system programming skills to enhance cross-platform data-path safety, resulting in more reliable storage metrics handling without introducing new features, but delivering measurable stability improvements.