High-Frequency Trading (HFT) Infrastructure

Field Programmable Gate Arrays (FPGAs) allow trading firms to program custom silicon at the hardware level, bypassing the overhead of a traditional operating system. This enables them to process market data feeds and execute orders in nanoseconds, well below microsecond CPU latency.

Kernel bypass networking utilizes specialized network interface cards, like Solarflare, to pass data directly from the network to user-space applications. By skipping the Linux kernel's network stack, systems eliminate significant context-switching delays and reduce execution time.

Proximity is critical because data travels over fiber optic cables at roughly two-thirds the speed of light, making every meter count. HFT firms spend millions to co-locate their servers in the exact same data centers as exchanges like the NYSE in Mahwah, New Jersey.

C++ provides engineers with granular control over memory management and allows for predictable execution times without garbage collection pauses. This level of ultra-low-latency optimization is strictly required to stay competitive in modern market microstructures.