I see, if this is private network then this is a nice simple solution for caching. We plan to implement S3-caching in minio [https://minio.io https://minio.io]

I see, if this is private network then this is a nice simple solution for caching. We plan to implement S3-caching in minio [https://minio.io https://minio.io] (i.e it will authenticate the requests and also do caching) in case you'd be interested for public facing caching proxies.