我正在从S3存储桶提供静态图像，并向存储桶中的所有资产添加protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
/*...*/
interceptExternalIntentAndPlaySongFromUri(getIntent());
}
@Override
protected void onNewIntent(Intent intent) {
interceptExternalIntentAndPlaySongFromUri(intent);
}
private boolean interceptExternalIntentAndPlaySongFromUri(Intent intent){
Uri data = intent.getData();
if (data != null && intent.getAction() != null &&
intent.getAction().equals(Intent.ACTION_VIEW)){
String scheme = data.getScheme();
String filename = "";
if ("file".equals(scheme)) {
filename = data.getPath();
} else {
filename = data.toString();
}
player.setDataSource(filename);
setIntent(new Intent()); //this is to remove the last intent
//without the above line, last request is reloaded when the user open another app
//and return in this
return true; //has intercepted an external intent
}
return false; //has not intent to intercept
}
标头。然后通过cloudfront分发资产。以下是浏览器中的标题：
@v1(column for 1s table) = '1,2,3,4'
@v2(column for 2nd table) = '1,2,3,4,5,6,7'
我不确定该如何解决这个问题。我相信Cache-Control: public,max-age=31557600意味着边缘服务器正在缓存我的资产。这是否意味着CloudFront已服从S3发送的Request URL: cloudfront url here
Request Method:GET
Status Code:304 Not Modified
Remote Address: remote address
Referrer Policy:no-referrer-when-downgrade
Response Headers
HTTP/1.1 304 Not Modified
Connection: keep-alive
Date: Fri, 25 Aug 2017 14:00:27 GMT
ETag: "871e4a2d65f891b79a30b1fdf7622650"
Server: AmazonS3
Age: 52182
X-Cache: Hit from cloudfront
Via: 1.1 f348970492a18bf5c630c5acc86c1ee3.cloudfront.net (CloudFront)
X-Amz-Cf-Id: u35A-l_zhEAMsJSmtLmf4VFIPfBfDLdBqIjdjwfAJSDBcJhxLC7OdA==
标头，这些图像是否正在缓存在CloudFront边缘服务器中？或者图像被缓存在broswer中？我很感激任何帮助，以澄清我的困惑。谢谢！
答案 0 :(得分：2)
在确定cloudfront是否正在缓存时，需要查看两个标头。
基于那些头文件，是的，cloudfront通过设置缓存控制头来缓存您的内容。