修复Flash的积极的缓存 [英] Fixing Flash's aggressive caching

问题描述

我有一个加载改变的偶尔数据的一大块Flash应用程序，所以我建立了我的服务器发送的Last-Modified 头和回复一个 304未修改当客户端的版本是不是已经过时了。

I have a flash application that loads a big chunk of data that changes occasionally, so I set up my server to send Last-Modified headers and reply with a 304 Not Modified when the client's version is not outdated.

它工作正常，在每个浏览器，但Flash完全忽略了这一点，缓存资源积极。它甚至没有发出一个请求到服务器，当您试图 URLLoader.load A previously访问过的URL，它只是检索从磁盘缓存文件。

It works fine in every browser, but Flash completely ignores that and caches the resource aggressively. It doesn't even send a request to the server, it just retrieves the cached file from disk when you try to URLLoader.load a previously visited URL.

是我觉得在谷歌的解决方法不是对我有帮助的 - 要么你永远缓存或每次（修改URL参数）重新下载该资源。我需要它们的混合物 - 重新下载当资源被更新​​，使用高速缓存否则

The workarounds I find on google aren't helpful for me - either you cache forever or redownload the resource every time (changing the URL parameters). I need a mixture of these - redownload when the resource is updated, use cache otherwise.

推荐答案

您可以使用一个版本号作为URL参数...这样就不会被重新下载，每次Flash播放器的负载，只有当你真正的变化版本号

You could use a version number as URL parameter... This way it won't be re-downloaded each time Flash Player loads, only when you actually change the version number

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