[Zope-dev] ZCatalog caching with memcached

[Wichert Akkerman]

Previously Andreas Jung wrote:
> On 25.10.2008 14:37 Uhr, Christian Theune wrote:
> >Hi,
> >
> >On Fri, 2008-10-24 at 15:41 +0200, Hedley Roos wrote:
> >>The product is a monkey patch to Catalog.py. I'd love some feedback and
> >>suggestions.
> >
> >I'd love if this wouldn't be a monkey patch.
> >
> >Also, there is nothing that makes this integrate correctly with
> >transactions. Your cache will happily deliver never-committed data and
> >also it will not isolate transactions from each other.
> 
> The problem with memcached is that memcached isn't transactional. We 
> managed to solve this problem by implementing a cache tool (for CMF) 
> where where the set/get methods for the memcached participate in the 
> Zope transaction using a DataManager. I can provide the code if someone 
> should be interested.

If I remember correctly memcached is transactional internally but the
python bindings don't expose that.

Wichert.


-- 
Wichert Akkerman <wichert at wiggy.net>    It is simple to make things.
http://www.wiggy.net/                   It is hard to make things simple.