Preallocated Object Pool - Quant Developer Interview Question

Problem Description

Dynamic memory allocation on the critical path introduces unpredictable latency due to heap fragmentation and system calls. To mitigate this, developers employ the Object Pool pattern to pre-allocate contiguous memory blocks and efficiently recycle objects using a free list. This approach ensures deterministic performance and maximizes cache locality for latency-sensitive order management components. Task Implement an OrderPool class that manages Order objects using a std::vector for contiguous