I have got this response from one of the installations I have:
<?xml version="1.0"?>
<!DOCTYPE rss PUBLIC "-//Netscape Communications//DTD RSS 0.91//EN"
"http://my.netscape.com/publish/formats/rss-0.91.dtd">
<rss version="0.91">
<channel>
<title>Disney�s Hercules Forum
</title>
<description>Disney�s Hercules Forum
</description>
<link>http://network54.com/Forum/4922</link>
<language></language>
</channel>
<image>
<title>Network54 - B.Y.O.P.</title>
<url>http://network54.com/images/54-rss.gif</url>
<link>http://network54.com/</link>
<width>88</width>
<height>33</height>
<description>Network54 - B.Y.O.P.</description>
</image>
<item>
<title>Please contact support</title>
<link>mailto:[EMAIL PROTECTED]</link>
<description>You have overused our XML export system, please
contact
support to bypass this block</description>
</item>
</rss>
All the network54 channels give the same answer. I have yet to contact
them to apologise and query for further information WRT limits in
access. It looks that we are in a IP-based black list.
The problem is that Jetspeed has a default setup in which 50 parallel
threads will ask for updated channels. The way it works now, it can very
easily overflow servers (I have seen it happen with 10.am and
network54.com). I strongly suggest that we look for means to avoid that.
In the meantime, I make the following PROPOSAL:
- Default thread count be lowered to 5, with a maximum of 10, and 2 free
threads.
- We should play with the refresh rate of the DiskCacheDaemon. Possibly
1 hour is too fast.
This is still enough to overflow servers, and should not be slow when
used with native threads (No problems with locks in DNS lookups).
A longer term proposal would be to implement a maximum number of
concurrent requests PER SERVER. A way to achieve that would be to use
the W3C libwww protocol implementation, a drop in HTTP package. I wil
test it.
BTW: Has anybody experienced such a problem? I got it in a machine that
is deployed in a fast corporate network. With my modem, I only got reset
connections from 10.am, but never overflowed network54.com
What do you think about that?
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