如何使通过Java AWS开发工具包从Cloudfront CDN提供的文件（要刷新）无效？ [英] How to invalidate a file(to be refreshed) served from Cloudfront CDN via Java AWS SDK?

问题描述

我正在使用Java SDK将图像上传到S3，如何使CloudFront中的文件无效，以便从s3来源重新获取该文件。

I am using Java SDK to uploaded images to S3, How do I invalidate a file in CloudFront so that it is refetched from s3 origin. How to do it via Java SDK ?

推荐答案

import com.amazonaws.services.cloudfront;
import com.amazonaws.services.cloudfront.model.CreateInvalidationRequest;
import com.amazonaws.services.cloudfront.model.Paths;
import com.amazonaws.services.cloudfront.model.InvalidationBatch;
import com.amazonaws.auth.DefaultAWSCredentialsProviderChain;

AWSCredentials awsCredentials = new DefaultAWSCredentialsProviderChain().getCredentials();
AmazonCloudFrontClient client = new AmazonCloudFrontClient(awsCredentials);

Paths invalidation_paths = new Paths().withItems("/path/to/invalidate/foo.jpg", "/path/file2.txt").withQuantity(2);
InvalidationBatch invalidation_batch = new InvalidationBatch(invalidation_paths, "unique_id_like_a_date");
CreateInvalidationRequest invalidation = new CreateInvalidationRequest("distributionID", invalidation_batch);
CreateInvalidationResult ret = client.createInvalidation(invalidation);

请注意，您只能同时出现三个无效指令；失效似乎需要10到30分钟。

Note you can only have three concurrent invalidations; an invalidation seems to take 10-30 minutes.

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