Yes. Jonathan Marsh - http://www.wso2.com - http://auburnmarshes.spaces.live.com
> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > On Behalf Of Keith Chapman > Sent: Thursday, June 26, 2008 7:38 PM > To: [email protected] > Subject: Re: [mashup-dev] New feedCache system service > > I'm sure this service will be more than useful. In order to do the > following you need to include the stub of the new feedCache service > right? > > var feed = reader.get(feedCache.feedReference(url)); > > Thanks, > Keith. > > Jonathan Marsh wrote: > > After doing a number of mashups that involved caching feeds, I > decided to > > make a building-block service for this capability. I checked this in > as > > system/feedCache and it should start appearing in the builds. > > > > > > > > It's a pretty clever service if I do say so myself. If you want a > feed, go > > through the feedCache service like this: > > > > > > > > var feed = reader.get(feedCache.feedReference(url)); > > > > > > > > The feedCache will fetch and cache the feed for 24 hours by default > (with no > > background prefetching). The returned url will be to a local copy of > the > > feed. Subsequent calls as above will return the feed url of the > cache, and > > if the cached copy is stale, it will refresh it in the process. > > > > > > > > If one wants the raw XML directly (e.g., you're not using the > FeedReader > > object), you can get that too: > > > > > > > > var rawFeedXML = feedCache.feedContent(url); > > > > > > > > Again, this will use the local cache if there is one and it's less > than the > > default 24 hours old, otherwise it will populate the cache and mark > it with > > a 24 hour lifespan. > > > > > > > > You can control the cache settings on a per feed basis: > > > > > > > > feedCache.cacheSettings(url, 6*60*60*1000, false); > > > > > > > > This changes the cache lifespan of the requested url to 6 hours from > 24 > > (still with no prefetching). Prefetching (periodic background > refreshes) > > can also be specified: > > > > > > > > feedCache.cacheSettings(url, 1*60*60*1000, true); > > > > > > > > This refreshes the cache every hour (+/- the five minute refresh > interval), > > so you're likely to get good response time. > > > > > > > > Anyway, play with it - I think it might be useful in simplifying some > of our > > other samples - I'm going to rewrite blogactivity to use it to help > > fine-tune the perf there. Let me know what you think! > > > > > > > > P.S. I'm getting faster at this - conception to checkin was about 4 > hours > > dev time ;-). Probably because I spent a lot more time designing the > > interface, then wrote the whole service in one shot, spent about 10 > min > > fixing typos and only about 20 min testing and debugging to a working > state. > > Then another hour tweaking, adding documentation, safety annotations, > > license etc. > > > > > > > > Jonathan Marsh - <http://www.wso2.com> http://www.wso2.com - > > <http://auburnmarshes.spaces.live.com> > http://auburnmarshes.spaces.live.com > > > > > > > > > > > > > > --------------------------------------------------------------------- > --- > > > > _______________________________________________ > > Mashup-dev mailing list > > [email protected] > > http://www.wso2.org/cgi-bin/mailman/listinfo/mashup-dev > > > _______________________________________________ > Mashup-dev mailing list > [email protected] > http://www.wso2.org/cgi-bin/mailman/listinfo/mashup-dev _______________________________________________ Mashup-dev mailing list [email protected] http://www.wso2.org/cgi-bin/mailman/listinfo/mashup-dev
