Software Development | Quality Assurance on Instagram: "Modern APIs demand more than simple throughput checks. Performance testing now means evaluating latency under peak traffic, resilience against spikes, and realistic usage patterns. It’s not about hitting endpoints with synthetic loads, but about simulating real-world scenarios: caching behavior, rate limits, and dependency bottlenecks. The real challenge is shifting from “does it respond?” to “does it scale, adapt, and stay reliable under s