找到另一篇解释更详细的 http://www.jianshu.com/p/aa49bb3555f4 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ 最近在研究cache的机制 看了这篇 http://nshipster.cn/nsurlcache/ 跟 https://developer.apple.com/documentation/foundation/nsurlrequest.cachepolicy/1411223-useprotocolcachepolicy 还是没有搞懂 想问一下 如果我cache设定为useProtocolCachePolicy, 大小也配置好了。 Server的回应Header里也有设定Cache-Control 程式就会依照Cache-Control设定好的时间存cache吗？ PS.这篇有提到一点 http://www.hpique.com/2014/03/how-to-cache-server-responses-in-ios-apps/ The shared NSURLCache gives us much out of the box. If our server uses Cache-Control HTTP headers a sets the maximum age for its responses, both the shared NSURLSession (iOS 7 only) and NSURLConnection will respect this and return cached responses before they expire. We don’t need to write any code to get this functionality 但在Apple的文件我是找不到，希望有经验的人能指导一下 3Q --

※ 发信站: 批踢踢实业坊(ptt.cc), 来自: 114.32.190.119 ※ 文章网址: https://webptt.com/cn.aspx?n=bbs/MacDev/M.1498612359.A.FA7.html ※ 编辑: fightword (114.32.190.119), 06/28/2017 09:17:36 ※ 编辑: fightword (114.32.190.119), 06/30/2017 11:48:59