更好的方法是创建一个缓存策略，这样可以改善系统性能并最大限度降低重复数据请求对源系统造成的负面影响。

Instead, create a caching strategy to both improve system performance and minimize any negative impact on the performance of source systems caused by repeated requests for data.

youdao

当引擎处理一个搜索请求，它将先到本地系统里进行查找，如果所获得的结果并不能令人满意，就会在下一个peer那里查询，并重复这个过程直到获得满意的结果。

When they execute a query, firstly their local system is queried; than if the results are not satisfactory, the next peer is queried, and so on.

youdao