I have seen many answers in SO regarding using Google's CDN to load jQuery instead of
loading it from the local server. In essence I understand this is the issue related with decreased latency, better caching. But I want to know the technical answer, perhaps an example mentioning why it is even an issue to just load a 30KB file. We see nowadays websites with rich multimedia features which do significant download from server, so in such light does this file size make any difference?
Also there are huge concerns regarding using such "heavy weight" library if all you are using is just a fraction of subset of features? And if you are going to use at all, it is recommended to use compressed version (30+ KB) instead of the uncompressed one(200+ KB)? I also know the usual answers to it, perhaps if someone can shed more insight to it?
My both questions mentioned above are essentially trying to raise the same issue. I would be very grateful for answers that can provide the perspective to it rather than usual answers in SO?