OK，我的设置，什么我要完成这么一个简单的总结：

OK, so a quick summary of my setup and what i want to accomplish:

我有一个轨运行我的网站2.3.5服务器。我有我的网站上，用户可以上传图片直接到S3 Flash应用程序。

I have a rails 2.3.5 server that runs my website. I have a flash application on my site where users can upload images directly to s3.

当上传完成后，钢轨通知。

When an upload is completed, rails is notified.

目前在图像完成上传到S3和铁轨被告知这一点，我想轨一些邮寄的东西位于EC2创建两个缩略图（110x110和600×600）。

At the point where the image is finished uploading to s3 and rails is notified, i want rails to send some post to something located on ec2 to create two thumbnails (110x110 and 600x600).

在创建并转移到S3的缩略图，我想不管过程在EC2上一个邮寄回轨，以通知缩略图创建完成，并在S3上。

When the thumbnails are created and transferred to s3, i want whatever process on ec2 to send a post back to rails to notify that the thumbnail creation is finished and are on s3.

什么是实现这一目标的最佳方式是什么？我看过的工具，如刀很简单，但我不熟都使用EC2或类似的服务。

What is the best way to accomplish this? I have looked at tools such as knife very briefly but I'm not familiar at all with using ec2 or similar services.

感谢

推荐答案

我会在使用的过程是这样的：

The process that I would use is the following:

一旦图像上传到S3，轨得到通知，并将其添加一个消息到Amazon SQS队列（见 HTTP： //aws.amazon.com/sqs/ ）

在EC2上运行一个后台进程检查队列并处理任何消息，生成缩略图

A background process running on EC2 checks the queue and processes any messages, generating the thumbnails

一旦生成缩略图，通知被使用Amazon SNS（发见 http://aws.amazon.com/ SNS / ）和你的Rails应用程序respons该通知

Once a thumbnail is generated, a notification is sent using Amazon SNS (see http://aws.amazon.com/sns/) and your rails app respons to this notification