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Does an update fsync to disk immediately?

Question Posted / gaurav awasthi


Does an update fsync to disk immediately?..

Answer / Kumar Nishant

No, in MongoDB, updates do not immediately fsync to disk. By default, data is stored in memory and flushed to disk asynchronously. However, you can use the journaling option 'j' for writing operations, which will force a write to the journal before confirming the write operation, providing a level of durability. But it should be noted that this can have a performance impact.

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