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Zero-Copy FlatBuffer Order Parsing via reinterpret_cast

Hard · memory_optimization · Quant Developer interview question · zero-copy, reinterpret_cast, flatbuffer, memory_optimization, serialization, pointer

In high-frequency trading, network messages arrive as raw byte buffers, where minimizing deserialization latency is critical. FlatBuffer-style data structures enable zero-copy parsing by allowing a raw buffer to be reinterpreted directly as a typed object via reinterpret_cast. This technique eliminates construction overhead and memory allocations, providing a significant performance advantage for processing market data or order messages. Task Implement two C++ functions for zero-copy serializat