How does Scala support highly concurrent lock-free system design?

Scala supports lock-free concurrency using immutable data structures, CAS operations, and actor isolation.

Lock-free concurrency avoids traditional locks to prevent contention and deadlocks. Scala leverages immutable collections, atomic references (AtomicReference, CAS), and actor-based isolation (Akka). Functional programming ensures state transitions are pure, reducing shared mutable state. This improves scalability under high contention workloads such as trading systems or real-time analytics.