The log operation succeeds only on transaction commit, but a failure of the log operation doesn't cause the transaction to abort.

只有当事务提交的时候日志操作才会成功，但日志操作的失败并不会导致事务被中止。

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For example, a service may require you to log on before calling another operation, which is termed a pseudo-conversational service.

例如，服务也许要求您在调用另一个操作之前先登录，这称为伪对话服务。

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Once we know we are in the right context, we can prepare a log record based on the type of operation executed. The following code excerpt illustrates how it can be done.

一旦我们知道我们位于正确的上下文中，我们就可以准备一个基于被处理的操作类型的日志记录。

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