What does phrase “synchronization with main memory” mean?
What does phrase synchronization with main memory mean?
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When you have multiple threads each thread may keep a local copy of a variable’s value. However the “official copy” of the value is kept in main memory. So what that phrase means is that any local copy of a variable’s value will be made consistent with main memory (either reading to check for updates, or writing to publish updates made to the local copy).