On Mon, 2007-05-21 at 10:09 -0400, Jim Fulton wrote:
I'm adding zope-web to the CC list.
I wish you hadn't done that yet. If we keep changing things. it will
be hard to figure this out.
It would be helpful to show the results of, say wget -S, as in:
[EMAIL PROTECTED]:~/tmp$ wget -S http://www.zope.org/news.rss
--09:58:05-- http://www.zope.org/news.rss
= `news.rss'
Resolving www.zope.org... 63.240.213.171
Connecting to www.zope.org|63.240.213.171|:80... connected.
HTTP request sent, awaiting response...
HTTP/1.0 200 OK
Server: Zope/(unreleased version, python 2.2.3, linux2) ZServer/1.1b1
Date: Mon, 21 May 2007 13:57:28 GMT
Content-Length: 4011
Content-Type: text/xml
Age: 4
X-Cache: HIT from parent-ng2.zmh.zope.net
X-Cache: MISS from cache2.zmh.zope.net
Connection: close
Length: 4,011 (3.9K) [text/xml]
100%[] 4,011 --.--K/s
09:58:05 (365.80 KB/s) - `news.rss' saved [4011/4011]
[EMAIL PROTECTED]:~/tmp$ wget --user jim --password xx -S http://
www.zope.org/news.rss
--10:00:45-- http://www.zope.org/news.rss
= `news.rss.1'
Resolving www.zope.org... 63.240.213.171
Connecting to www.zope.org|63.240.213.171|:80... connected.
HTTP request sent, awaiting response...
HTTP/1.0 200 OK
Server: Zope/(unreleased version, python 2.2.3, linux2) ZServer/1.1b1
Date: Mon, 21 May 2007 13:45:20 GMT
Content-Length: 4011
Content-Type: text/xml
X-Cache: HIT from parent-ng2.zmh.zope.net
Age: 892
X-Cache: HIT from cache4.zmh.zope.net
Connection: close
Length: 4,011 (3.9K) [text/xml]
100%[] 4,011 --.--K/s
10:00:45 (1.85 MB/s) - `news.rss.1' saved [4011/4011]
It looks to me like the cache tier has been changed; IIRC zope.org was
not in the cache tier I setup for Managed Hostingand didn't have (at
least) 4 cache servers in it's request flow.
Note that the second request is authenticated (except with a
different password :)
That won't make any difference...they both resulted in a cache hit. The
first time, you hit a front side cache server that didn't have it
cached: cache2, the second time, you hit a cache server that did have it
cached: cache4.
...
The objects do not display any caching policy in ZMI, but the cache
manager still shows the enties in different variations.
What cache manager?
Possibly because it doesn't know about the change.
It looks like in issue in Zope.
How so? If you look at the wget output above, there don't seem to be
any cache headers set. So, data would not be cached unless there is
an overriding policy in squid.
If the cache tier was changed and relying on the (old) default settings,
then it's going to cache for a certain period of time.
If you see both te child and the parent MISS,
then what you're getting is coming from the app server.
Yup.
I'm getting a hit from the parent. Also note that both hits have me
results for which the most recent entry is from March 29. If I bust
the cache with a query string, the most recent entry is for May 15.
That would also
explain differences based on roles. There is nothing in squid that
distinguishes if a user is authenticated, anonymous or manager.
I don't follow this, what explains the difference; there should be no
difference based on roles.
I *think* Andrew Sawyers did something to arrange that non-anonymous
users get non-cached results. This doesn't seem to be working any
more. This is bad. I'm hoping that however got this working properly
at some point can tell us what they did. :)
It's been a long time, but IIRC we got rid of all caching for zope.org
where a cache header wasn't explicitly being set.
Jim
Was the cache servers changed around? IIRC the zope.org tier only had 2
measly cachesand if they changed, I bet the rules where not changed
along with the cache servers.
Andrew
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