AWS - CloudFront

最新推荐文章于 2025-02-22 22:29:38 发布

转载最新推荐文章于 2025-02-22 22:29:38 发布 · 720 阅读

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本文介绍了CDN(Content Delivery Network)的基本概念，包括EdgeLocation缓存位置、Origin内容源及不同类型的分发如WebDistribution和RTMP。EdgeLocation不仅用于读取还可以写入数据，并详细解释了对象缓存的时间限制及其清除机制。

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Edge Location - This is the location where content will be cached. This is separate to an AWS Region/AZ.
Origin - This is the origin of all the files that the CDN will distribute. This can be either an S3 Bucket, and EC2 Instance, an Elastic Load Balancer or Route53.
Distribution - This is the name given the CDN which consists of a collection of Edge Locations.
Web Distribution - Typically used for Websites.
RTMP - Used for Media Streaming.
Edge locations are not just READ only, you can write to them too. ( ie put an object on to them)
Objects are cached for the life of the TTL ( Time To Live )
You can clear cached objects, but you will be charged.