[Wikitech-l] Re: update record

Tim Starling wrote: Jens Frank was talking about "touching". This sounded like a database query to me. Now you are terming it "cache purging", which I'm not sure what it is, but if it were referring to memcached, it would not require a database query. I suppose I definitely need to know more about this. Where is the "parser cache" -- is that in memcached or elsewhere? What does "touching" a page mean -- does it involve a database query? Can cache purging be done without a database query? If not, can the cache mechanism be changed (perhaps to use memcached) so database queries can be avoided when all you want to do is invalidate a cache entry? Timwi