What is sequential consistency in distributed systems?
Sequential consistency is a model that ensures operations appear to be executed in a sequential order, preserving the order of operations as seen by all processes.
Can you give me an example of how it works?
Sure! Imagine two processes, A and B, both writing to a shared variable. If A writes '1' and then B writes '2', sequential consistency ensures that any process reading the variable will see either '1' followed by '2' or just '2', but not '1' after '2'.
What are the benefits of using sequential consistency?
The main benefits include easier reasoning about program behavior and debugging, as it aligns with our intuitive understanding of time and order.
Are there any drawbacks to this model?
Yes, it can lead to performance bottlenecks, as it may require more synchronization between processes compared to other consistency models.
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