Re: MasonHQ node caching, and other bugs

> This posting is related to usage of MasonHQ. My appologies if this is the
> wrong forum.
>
> I'm building a Wiki web site based upon the MasonHQ code. Besides being a
> little slow, it works pretty well. But I found a few bugs; one particular
> is causing much grief.

Hi Soren, sorry for the delayed response...

> 1) Content caching.
>
> When editing a page, especially when editing a page that has just been
> updated, I often find myself editing old content. The edit.html loads old
> content into the form. A few reloads will cycle between various revisions
> of the page. The page is not cached by a proxy server. Tracking through
> the code, I end up on lib/MHQ/Wiki/Node.pm in the latest_version()
> subroutine. This piece of code does not return the latest version, but
> instead whatever is cached in ... in apache I guess.
>
>    sub latest_version
>    {
>      my ($self) = @_;
>      unless (defined($self->{_latest_version})) {
>        ($self->{_latest_version}) =
>          $self->versions(version_id=>$self->latest_version_id);
>      }
>      return $self->{_latest_version};
>    }

It is caching in the Node object itself, which should be recreated every
request. So I don't think this is the problem.

I've never encountered the problem you are having on the masonhq.com site,
and I do often edit pages that have just been updated.

Are you still having this problem? If so, after editing and saving a page,
check the node entry database to see if it has been updated. If not, then
for some reason your query isn't being committed to the database. (Are you
using a database with transactions?)

>
> 2) Slowness, internal server error.
>
> Starting up apache takes a lot of time. And new instances have to be
> spawned often, so the site is generally pretty slow. Keeping
>
>    MaxRequestsPerChild 10
>
> in conf/httpd-prod.conf.src generally works, but is slow. Increasing the
> number results in frequent internal server errors.

Internal server errors should be matched with errors in the logs...what are
the errors?

>
> 3) Links to local files.
>
> The might be a restriction in Kwiki more than MasonHQ. But there seem to
> be no syntax for linking to local files.
>
> I guess I can create new rules in lib/MHQ/CGI/Kwiki/Formatter.pm for this
> purpose?

Yup.

>
> 4) Bugs and documentation
>
> I have fixed a few other bugs in the code, as well as kept an installation
> journal that is more accurate than the one provided. Is there somewhere to
> send patches and docs updates?
>

Please post them to this list, and I'll try to get to them with more haste
than before. :)

A better installation journal would be great. Actually this should probably
be put on the wiki and linked from http://masonhq.com/?SourceForThisSite, so
that it can be easily updated.

Thanks!
Jon



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