在我們的3G版網站的項目中使用了Html5/">Html5 application cache，將大部分圖片資源、JS、CSS等靜態資源放在manifest文件中。
沒想到上線第一天就遇到了嚴重問題：application cache會默認緩存當前頁面！！！就算我們有如下設置：
復制代碼代碼如下:
www.mb5u.com
NETWORK:*
也就是說，對於所有的動態頁面，application cache會緩存起來，用戶怎麼刷新都是老的！
而且手機浏覽器還很難清除掉，也不支持JS清除！
花了一個上午，嘗試了很多辦法，查了很多資料，都沒能清除掉客戶端的緩存。一上午被用戶投訴慘了。
最後還是萬能的stackoverflow救了我：
Do not use appcache unless it is REALLY 100% EXACTLY WHAT YOU WANT TO DO
Even if it IS 100% EXACTLY WHAT YOU WANT TO DO, *DO NOT* use appcache until you are 100% CERTAIN that you are not going to make a single change to that page (or any file that it links to) for a LONG time.
Delete the manifest file from the server -- if the browser can't find the manifest file, then it will clear its cache... ...this will also turn caching off for everyone.
Don't turn it on again until it's 100% CORRECT
Dealing with appcache is miserable, often.
解決辦法很簡單，在服務器端刪除掉manifest文件，並且慎用application cache
當然，也有辦法是用application cache，同時能繞過自動緩存當前頁面的問題。那就是用iframe