> > I'm working on a CGI script that pulls XML data from a public database
>
> Ah, I missed that bit on first read. Consider using something different than
> CGI here if you want to do caching. FCGI would allow you to do in-memory
> caching, for example, as would mod_python and a lot of other solut
> minidom creates a pretty complete tree data structure, with loads of backlinks
> to parent elements etc. That's where your circular references come from.
>
> I don't know why you want to use pickle here (and not serialised XML or the
> plain in-memory tree), but if memory consumption is an issue
I'm working on a CGI script that pulls XML data from a public database
(Medline) and caches this data using shelveleto minimize load on the
database. In general, the script works quite well, but keeps crashing
every time I try to pickle a particular XML document. Below is a
script that illustrate
