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Shared-Dictionary Compression over HTTP (SDCH)
- jws 18y agoBleh, powerpoint? May as well put it behind a door marked "Beware of the Leopard". There is a URL for a group at the end, but it won't let me in because I am not a member. To summarize though: New http content encoding. Server defines dictionaries and tells clients which dictionaries to use for a request. Client loads the dictionary, presumably once for many pages. gzip is still used after the dictionary compression phase Claims a 40% savings in bytes over gzip alone. (Perhaps not counting the one time dictionary load.) Can't get protocol or specs without being accepted to a private group. Sounds like a good idea, but I'd like to see it compared to other compression algorithms that outperform gzip. I suspect it helps XML in particular. I had always assumed giant XML tags would compress away with gzip, but in practice replacing long tags with short tags is still a big win.
- thwarted 18y agoAgreed, POWERPOINT?!?! Where's the scribd link when you need it?
- dedalus 18y agoActually you simply need a google account to join this group (I joined it like that for instance). This is far better than Delta Encoding and wait till you see some people take unfair advantage of this..