Re: [Openjnlp-devel] New OpenJNLP User / Some Patches

[Nathan M. <nm...@vi...>]

On Tue, Nov 19, 2002 at 11:17:32AM -0600, Kevin Herrboldt wrote:
> >There's one more change I'd like to make. I might not get to it very
> >quickly, but here's the remaining problem I'd like to fix: the library
> >should *not* apply the same caching logic to .jnlp files that it 
> >applies
> >to resources specified in the .jnlp files; it should just fetch the URL
> >once and then use it. As is, it's issuing something like four queries
> >(GET and HEAD) against the same URL - in my case causing the server to
> >perform a lot of wasted work. If/when I'm able to fix this one, I'll
> [...]
> 
> Have you tried this with Java Web Start? It behaves in pretty much the 
> same fashion. The real answer, I believe, is to improve the 
> implementation of caching. I have been planning to look at implementing 
> "If-Modified-Since" logic so only a single request to the server needs 
> to be made.

Thanks for the response, Kevin.

I don't see how improving the cache implementation helps. To say that
you're caching something implies making an initial HEAD request to decide
whether to do a GET - a win for resources that are large and reasonably
static, a loss for everything else. In my case, it's a big loss for the
startup .jnlp document. And if you only do a GET, why bother caching a
result you'll never need again?


Nathan Meyers
nm...@vi...