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   Re: [xml-dev] XML Binary Characterization WG public list available

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At 5:16 PM +0200 4/9/04, Eric van der Vlist wrote:

>What about "compacted" XML if the target is to optimise for space?

The target is an issue of debate. :-) Whether to optimize for space 
or speed or both or one at the expense of the other is a big 
splitting point. As with almost any optimization issue, a lot depends 
on the very specific use case. Some people need space. Some need 
speed. Sometimes you can get both. Sometimes doing either one is a 
challenge. As usual regular XML makes a nice compromise position for 
most use cases.

Even space vs. speed depends on which space and speed. If network 
bandwidth and speed are the issues, you can optimize both space and 
speed very effectively with gzip. However, that pays a memory space 
and CPU speed penalty on both ends of the transmission. Unlike a lot 
of the custom proposals though, it's really easy to integrate into 
the existing infrastructure, and to configure on a case-by-case 
basis, especially if you're using HTTP. It has a much lower impact on 
the overall environment than some of the custom binary proposals I've 

I think we may have this set of choices:

1. Minimum size
2. Maximum Speed
3. Interoperable

Pick any one. :-)


   Elliotte Rusty Harold
   Effective XML (Addison-Wesley, 2003)


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