Yet the operation is a matter of choice andnot necessity.
其实这个手术只是一种选择，还没到非做不可的地步。
2
The failure of a log operation does not cause the transaction to fail, and the log operation can succeed even if the transaction itself is aborted.
一个日志操作的失败不会导致整个事务的失败，并且即使在事务被中止的情况下日志操作仍旧可以成功。
3
The ability to open and close sockets to remote hosts or servers is a network operationand does not require any large amount of processing on the image running the application.