Second, setting the trigger option (once or always) is different for both versions.

其次，两个版本设置的触发器选项（一次或总是）不同。

youdao

Setting persist_to_db to "false" will trigger the use of an in-memory "persistence" broker.

把 persist_to_db 设为“false”将触发内存中“持久性”代理的使用。

youdao

Setting persist_to_db to "false" will trigger the use of an in-memory "persistence" broker.

把 persist_to_db 设为“false”将触发内存中“持久性”代理的使用。

youdao