On Mon, Jun 3, 2013 at 12:15 PM, Ludovic Dubost <[email protected]> wrote:
> Hi, > > While working on the mobile application I needed a notification system that > would send enough but not to many notifications of changes in a wiki. Also > I needed the message to be short. > > In the end I looked at changes every five minutes and I constructed a short > message depending on the amount of changes (if only one page is added then > send the page title, if multiple pages are changes in one wiki send the > wiki names and the number of changes, etc..) > > After using this for a while on my mobile I found the result quite > interesting and I thought this could also apply to the activity stream. > > Here comes an activity stream experiment based on this method: > > http://www.xwiki.org/xwiki/bin/view/Main/ActivityStreamDemo (on a multi > wiki) > http://incubator.xwiki.org/xwiki/bin/view/Main/ActivityStreamDemo (on a > single wiki) > http://incubator.myxwiki.org/xwiki/bin/view/Main/ActivityStreamDemo > > Additionally this method allows to implement it quite efficiently, as you > can see at the bottom of the page. It was possible to make this display > with only 2 queries (plus loading of documents for the security checks, > which could in the end be the most costly). One queries finds the intervals > of 5 (or more) minutes in which there are data. From there we know how much > data we need from the activity stream and can retrieve all that data in one > query. Finally group by group we construct the message display. The fact > that you can run this in 2 queries is very important as it means you can > have steady performance both for very active wikis but also for wikis that > have much less or much older activity. One of the big problems of activity > stream displays is that you never initially know how much data you need to > display results. > > By clicking on the group you can load in ajax the details of the changes. > > You can also change the group delay and the number of groups displayed. > Here 60 minutes showing 40 groups > > http://www.xwiki.org/xwiki/bin/view/Main/ActivityStreamDemo?max=40&delay=60 > > What is interesting with this system is that the use could decide the delay > so that he gets a general view of the activity over a long period of time. > You could display a couple weeks with a 24 delay and if you click on the > day you show by groups of 30 minutes. This opens a lot of possibilities. > > You could also get into the details of the last hour, then be less detailed > for the less recent changes. > > Food for thoughts for the redesign of the activity stream. > > Ludovic > > > -- > Ludovic Dubost > Founder and CEO > Blog: http://blog.ludovic.org/ > XWiki: http://www.xwiki.com > Skype: ldubost GTalk: ldubost > _______________________________________________ > devs mailing list > [email protected] > http://lists.xwiki.org/mailman/listinfo/devs > _______________________________________________ devs mailing list [email protected] http://lists.xwiki.org/mailman/listinfo/devs
