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Lock-Free Queue and Compare-And-Swap

Hard · Algorithms & Data Structures · Quant Trader interview question · concurrency, lock-free, CAS, queue, algorithms

You are designing a high-throughput, low-latency queue for processing market data. You choose to implement a lock-free queue using Compare-And-Swap (CAS) operations. What fundamental problem does using CAS to manage concurrency solve compared to using mutex locks in this specific context?