The network call to get the current time is a perfect item to cache because your 10-second constraint means the data will not be changing for, at most, 10 seconds.

获得当前时间的网络调用是高速缓存的一个完美项，因为您的10秒约束意味着数据在至多10秒钟之内不会更改。

youdao

A reservation service may need access to scheduling information, while a shipping service may need to call said reservation service to arrange for a particular inventory item to be sent to a customer.

一个预定服务可能需要有权安排信息，而一个发货服务可能需要调用上述的预定服务来安排一个特定的发送给客户的存货条目。

youdao

Instead of calling sprintf all those times, we call it just once for each item in the hash in order to generate a sort field in the hash, and then use that sort field directly during the sort.

现在不需要每次都调用sprintf，对hash表中的每一项，只需要调用一次该函数，就可以在hash表中生成一个排序字段，然后在排序时就可以使用这个排序字段了。

youdao