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Medium · systems · Quant Developer interview question · pointers, casting, memory-layout, c++
High-Frequency Trading (HFT) systems prioritize low-latency execution, often processing market data feeds directly from raw network packets without intermediate memory copies. By utilizing zero-copy parsing techniques, such as casting pointers to packed structures, developers can significantly reduce processing time for high-volume trade streams. This approach is critical for maintaining accurate, real-time analytics like Volume Weighted Average Price (VWAP) on specific financial instruments. T