I'm using CarrierWave (0.9.0), Fog (1.14.0) and S3 to store user avatars. It seems to be taking a long time to determine the avatar URL for a given user. Subsequent calls have a greatly reduced time. (1.14.0) and
阅读背景：
为什么使用CarrierWave和Fog从S3检索文件URL需要这么长时间？
来源：互联网
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