Architecting Sub-Microsecond HFT Systems With C++ and Zero-Copy IPC

If you spend enough time building backend services, you start to think 50 milliseconds is a “fast” response time. But when you transition into the architecture of high-frequency trading (HFT) systems, you quickly realize that standard software engineering paradigms are not just slow — they are fundamentally flawed for this domain. In the HFT world, latency is measured in microseconds (and increasingly, nanoseconds).