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Editorial Team
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Asked: 2026-05-20T18:12:08+00:00

I have a controller action which handles multiple photo uploads (which are uploaded using

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I have a controller action which handles multiple photo uploads (which are uploaded using Plupload). For each file that is uploaded, the controller will do the following:

  • Create 7 resized versions of the photo
  • Upload these 7 versions to Amazon S3
  • Save info about the photo into a database.

The end user of this web app will be uploading as many as 100 hi res (~4mb) photos at a time so performance is a priority.

In this scenario, would I see an increase in performance (i.e. total time spent waiting for the app to handle the uploads) if I changed the controller to an AsyncController?

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1 Answer

  1. Editorial Team

    It probably won’t increase performance but it might offload some worker threads especially while waiting for the upload on the Amazon S3 servers which is a IO bound task and you could benefit from I/O completion ports. As far as the resizing is concerned that’s CPU bound task so there’s not much you could do about it other than improving the algorithm.

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