Sequential Consistency (Distributed)

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All processes see the same order of operations, but that order does not need to match real-time. Operations from each process maintain their program order, but interleaving between processes can differ from wall-clock order. Weaker than linearizability but still provides a global total order.

Key Properties

• Global Total Order
• Program Order Preservation
• Non-Real-Time Ordering

Related

• Strong Consistency (stronger — respects real-time order)
• Causal Consistency (weaker — only orders causally related operations)

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distributed-systems consistency