問題文
During a design review, someone claims that a Backstage installation can only ever run one backend process, so all features must scale together. Which statement corrects this?
選択肢
- Only the frontend can be replicated, because the backend holds the processing state in memory and would produce inconsistent results if more than one copy ran.
- The number of backends is fixed by the database schema.
- Each plugin always requires its own backend deployment.
- More than one backend can be deployed, so individual features can be scaled and isolated separately.