Answer
Immutable objects eliminate race conditions and ensure predictable behavior. They are crucial in financial systems and async environments where shared state causes corruption.
Quick Answer
Immutable objects cannot be modified after creation. In concurrent systems (Swoole coroutines) multiple coroutines may share objects. Mutable shared state causes race conditions. Immutable objects are inherently thread-safe. In transactional systems, immutability ensures domain rules are enforced at creation time - an invalid state cannot be created. Reduces defensive copying and audit trail complexity.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ