I don't understand what do you mean by mixed all concern into one big Uploader. IMO, the Uploader classes are responsible for uploading to corresponding file storage and Uploader, as a static class, responsible for selecting appropriate uploader implementation. So I don't see how it is mixed together.
I don't understand what do you mean by mixed all concern into one big Uploader. IMO, the Uploader classes are responsible for uploading to corresponding file storage and Uploader, as a static class, responsible for selecting appropriate uploader implementation. So I don't see how it is mixed together.
Can you clarify it a little bit more?
I have to apologize. I must have misread something. My comment really doesn't make much sense if I read your article again. Excuse my mumbling :D