Concurrency basics · interview question
Why is it important for a 'volatile' variable to be written and read from main memory?
Multiple choiceMediumchapter-15-curatedpremiumconcurrencythe-volatile-keyword
Answer and explanation
Correct answer
B. To ensure consistency across all CPU caches
Why
Reading and writing volatile variables from main memory ensures all threads have a consistent view, as changes are not cached locally by threads but are immediately visible to all.
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