- A A mechanism to prevent concurrent writes to the same document
- B A feature that allows multiple database instances to synchronize data
- C A strategy to increase concurrency by temporarily releasing locks
- D A mechanism to prevent data corruption during power outages
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Answer:
C
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Answer: C
Explanation: Lock yielding is a strategy used by MongoDB to increase concurrency by temporarily releasing locks. When MongoDB predicts that a page is unlikely to be in memory, operations will yield their lock while the pages load . Lock yielding was greatly expanded in version 2.2 of MongoDB .
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