The client-layer method that starts the transaction is considered the transaction owner.

开始事务的客户端层方法被称作事务所有者。

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Remember the golden rules: the client method invoking the API layer method is the transaction owner, and only the transaction owner should be responsible for rollback.

记住刚才的两条黄金法则：调用api层方法的客户机方法是事务所有者，只有事务所有者才负责执行回滚。

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If a service layer method deals with only read-only data, you can mark its transaction as read-only, which is a hint to optimize Hibernate and the underlying JDBC driver.

如果一个服务层方法只处理只读数据，可以将它的事务标为只读，这是优化Hibernate和底层JDBC驱动的一个方法。

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