# La subida del sistema no utiliza la URL de CDN de S3

**URL:** <https://meta.discourse.org/t/system-upload-not-using-s3-cdn-url/100729>\
**Category:** Self-hosting\
**Tags:** cdn, s3\
**Created:** [29 Octubre, 2018 06:27 UTC](https://meta.discourse.org/t/system-upload-not-using-s3-cdn-url/100729 "2018-10-29T06:27:15Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![sam](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/sam/32/102149_2.png) [@sam](https://meta.discourse.org/u/sam)\
**Post date:** [31 Octubre, 2018 08:19 UTC](https://meta.discourse.org/t/system-upload-not-using-s3-cdn-url/100729/8 "2018-10-31T08:19:20Z")

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Yeah this is indeed the case, preview does not use CDN, hiding the S3 origin from clients is an unsupported setup atm, longer term I expect even more trouble when we support direct to s3 uploads

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