Performance Profiling Cycle overview

Iterative workflow for identifying, diagnosing, and resolving performance bottlenecks in application code and infrastructure. The backend engineer and SRE define performance budgets and baseline benchmarks, then run profiling tools against representative workloads to capture CPU, memory, I/O, and latency profiles. Hot paths and resource contention points are analysed, and optimisations are implemented and A/B benchmarked against the baseline. Improvements are validated in staging under production-like load before being merged, and updated benchmarks are committed as the new performance baseline.