Load AssetBundles with Caching

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• 
  mgear 05/06/2017 at 10:29

  How to use AssetBundles
  https://unity3d.college/2017/06/04/use-assetbundles-assetbundlemanager-update-unity3d-games/

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• 
  Tomasz Kielski 13/07/2017 at 15:52

  Great post, great script, thanks!

  I have a question.
  Why do you use random url parameter in line 84?

  www = UnityWebRequest.GetAssetBundle(bundleURL + “?r=” + (Random.value * 9999999), hashString, 0);

  I would expect it would cause redownloading of the asset no matter if it is cached or not, maybe I am wrong.

  Tomasz

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  • 
    mgear 13/07/2017 at 16:02

    yeah, it was added to avoid getting cached bundle information from server, but my understanding was that if the hashString is supplied, it wouldn’t load the whole bundle again (if its locally cached already).

    Never actually measured or checked if that’s true.. : D

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• 
  Young 09/10/2017 at 16:28

  I wrote a different approach, instead of using UnityWebRequest, I use WebClient to download
  encrypted assetbundles as in byte[], and decrypt them, all happens in a seperate thread. And built in caching system won’t work with this approach, so I wrote my own caching system, works just fine so far.

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  • 
    mgear 09/10/2017 at 20:01

    nice! if you want to share, can post to https://github.com/UnityCommunity/UnityLibrary/

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• 
  Jamy4000 23/11/2017 at 01:18

  Hey mgear,

  Thanks a lot for this script, I’ve been struggling to understand how the caching system is working with asset bundles since a too much time, that helped a lot ! 🙂

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• 
  Amit 03/12/2020 at 15:10

  thanks a lot mgear. Really saved a lot of time. Code worked for me with couple of changes

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  • 
    mgear 03/12/2020 at 15:27

    nice, feel free to post your code or updated lines (if its related to some newer unity api or such changes/fixes)

    Reply