Scaling Writes easy
What is 'Write Amplification' in a database context?
- A When one logical write request from the user triggers multiple physical write operations on the disk (e.g., updating data + updating 3 indexes + writing logs).
- B When a user writes in ALL CAPS.
- C When the database automatically copies data to other users.
- D When the hard drive vibrates.
Answer: A. When one logical write request from the user triggers multiple physical write operations on the disk (e.g., updating data + updating 3 indexes + writing logs).
Write amplification consumes extra I/O bandwidth. It is a key reason why adding too many indexes or using complex storage engines can slow down write throughput.
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